Resources by Eric R. Day

Title Available As Summary Date ID Author
Bagworm
Plants Attacked: Juniper, arborvitae, other cedars, pine, hemlock, spruce, Chinese elm, honeylocust, primarily. Also on crabapple, maple, sycamore, box elder, willow, linden, poplar, and many others.
Mar 4, 2020 2808-1008 (ENTO-351NP)
Cucumber Beetles Apr 30, 2020 2808-1009 (ENTO-368NP)
Cottony Maple Scale Feb 2, 2021 2808-1011 (ENTO-411NP)
Fall Webworm
Native to North America, the fall webworm occurs throughout the United States and southern Canada. Its hosts include more than 100 species of deciduous forest, shade, and fruit trees, with preferences varying from region to region.
Mar 6, 2020 2808-1013 (ENTO-357NP)
Japanese Beetle
The Japanese beetle is found throughout Virginia and in most of the Eastern United States. In regions west of the Mississippi it is found in isolated pockets. Japanese beetles were first found in New Jersey in 1916 and have spread from that point since. The Japanese beetle has been well established in Virginia since the early 1970’s.
Sep 2, 2022 2902-1101 (ENTO-514NP)
Pales Weevil
Pales weevil feeds on all pines within its range. It will also feed, although to a lesser extent, on Douglas-fir, fir, hemlock, juniper, larch, northern white-cedar, and spruce.
Jun 30, 2020 2902-1102 (ENTO-386NP)
Common Ticks of Virginia Jan 30, 2022 2906-1396 (ENTO-487NP)
Pine Sawyers
Pine Sawyers are secondary infesters whose main damage is disfiguring wood by larval boring and tunneling in felled trees and usable trees which are weakened or dying from other causes. Plant parts attacked trunk. Damaging stage - larvae.
Jun 9, 2020 2907-1399 (ENTO-372NP)
Pine Needle Scale
Damage is not apparent until large populations have been present for more than 1 or 2 seasons. Trees are stunted, grow slowly, have short needles and shoots. Occasionally the feeding of scales produces chlorotic, yellowish flecks no the needles, but normally this is not apparent. Heavily infested plants are seriously weakened and may be in a state of decline.
May 1, 2020 2907-1400 (ENTO-371NP)
Balsam Twig Aphid
Twisted and curled needles are the most apparent damage from feeding by the balsam twig aphid. Feeding can also cause roughened bark on the twigs. Extensive feeding can cause a general decline and reduced vigor of the tree, yet in many cases is cosmetic and not particularly damaging. The major problem is that curled needles reduce the marketability and value of Christmas trees. Balsam twig aphids also produce honeydew, a sticky material that drops to needles and twigs below. At times the honeydew can become a growth medium for sooty mold, which turns the needles and twigs black.
Apr 30, 2020 2907-1401 (ENTO-367NP)
Pine Bark Adelgid
The pine bark adelgid was introduced from Europe and is now widely distributed in North America, occurring principally throughout the native range of eastern white pine. This insect is also found on Scots and Austrian pine.
Aug 28, 2018 2907-1402 (ENTO-285NP)
European Hornet
The European hornet is a stout hornet approximately 1-inch long. The color of the head and thorax is dark reddish brown with deep yellow and brown black markings on the abdomen. The markings on the abdomen are similar to the markings found on yellow jackets. The European hornet resembles the cicada killer wasp but is more robust and has more hair on the thorax and abdomen (but is not as hairy as a bee).
May 1, 2020 2911-1422 (ENTO-369NP)
Twig Girdler/Twig Pruner
These beetles cause very conspicuous damage in late summer. The leaves on large numbers of twigs and branches will be observed to turn brown prematurely. These twigs and branches sometimes fall from trees in great numbers and accumulate. On close examination, the twigs have one of two kinds of damage. Twigs damaged by the twig girdler are cut as neatly as by a knife. The cut end has been gnawed almost straight across with a faint rounding and is slightly roughened by the chewing. The twig girdler is more commonly found on pecan and hickory. The twig pruner causes a slightly different type of cut. The twig will be observed to have a hollowed out space at the cut end filled with sawdust like frass. The twig when split open will have a long tunnel through most of its length. The twig pruner is more commonly found on oak.
May 1, 2020 2911-1423 (ENTO-374NP)
Virginia Pine Sawfly
The Virginia pine sawfly has been recorded from New Jersey and Maryland to North Carolina and westward to Illinois. Its main hosts are Virginia and shortleaf pines, but it also feeds on pitch and loblolly pine.
May 1, 2020 2911-1424 (ENTO-375NP)
Baldfaced Hornet
The baldfaced hornet is a large, black and white hornet up to 1 inch (25.4mm) in length. It is black and white in color with a mostly white head or face. It is widely distributed in Virginia. The nests are constructed of the same paper-like material as that of other wasps (yellowjackets). They differ a great deal from other wasp nests in being enclosed in a thick "paper" envelope. There is a single opening at the lower end of the nest and a few hornets always guard this. Nests are always abandoned at the end of the season. Hymenoptera, Vespidae: Dolichovespula maculata (L.)
Mar 6, 2020 3006-1449 (ENTO-352NP)
Hemlock Woolly Adelgid Jul 13, 2022 3006-1451 (ENTO-228NP)
Balsam Woolly Adelgid
Native to central Europe, the balsam woolly adelgid is now distributed throughout eastern and western North America. It attacks all true firs, Abies spp., including balsam and Fraser fir.
Mar 1, 2021 3006-1452 (ENTO-434NP)
Redheaded Sawfly
The redheaded pine sawfly occurs from S.E. Canada throughout the eastern U.S. Feeding is primarily restricted to the two and three-needled pines, such as Jack, red, shortleaf, loblolly, slash, longleaf, and pitch pines. White pine and Norway spruce may also be defoliated.
Mar 5, 2021 3006-1453 (ENTO-429NP)
Drugstore and Cigarette Beetles Jan 30, 2022 3101-1526 (ENTO-488NP)
Earwigs in Virginia Jan 12, 2022 3101-1527 (ENTO-489NP)
Pine Tortoise Scale
Foliage drops, needles usually shorter and may kill tree over period of years - most damaging on seedlings and young saplings. Often black sooty mold is associated with infestations.
Mar 24, 2016 3101-1529 (ENTO-207NP)
Flour and Grain Beetles Jan 12, 2022 3101-1577 (ENTO-469NP)
Corn Earworm on Vegetables Mar 25, 2019 3103-1537 (ENTO-312NP)
Pine Tortoise Scale Nov 22, 2021 3104-1529 (ENTO-466NP)
Beet Webworm Mar 5, 2021 3104-1542 (ENTO-443NP)
Cabbage Looper Sep 29, 2017 3104-1544 (ENTO-244NP)
Celery Leaftier Mar 25, 2022 3104-1545 (ENTO-496NP)
Sap Beetles
Adults are usually black or brown beetles with an oval to oblong shape. They have clubbed or knobbed antennae and the economically important species typically measure 3–6 mm (0.12–0.24 inch) long. Some sap beetles have short wing covers that do not cover the entire abdomen. Some species have flattened bodies while others are more convex. Many sap beetles are a dull color, sometimes with mottling or spots. One common sap beetle, the picnic beetle [Glischrochilus quadrisignatus (Say)], is an attractive shiny black beetle with four yellow-orange bands or spots on the wing covers.
Mar 5, 2021 3104-1546 (ENTO-431NP)
Cutworms in the Home Garden Dec 12, 2017 3104-1547 (ENTO-252NP)
Eggplant Lace Bug
Adult eggplant lace bugs are a mottled grayish to dark brown in color and measure 4 mm (0.16 inch) long. Their bodies are flattened but sculptured, with broad lateral projections behind the head and lace-like wings. The antennae are darker at the tips. Nymphs are wingless and yellow in coloration. They develop black markings and black antennae as they mature. Older nymphs have many spiny projections over the body. Mature nymphs measure about 2 mm (0.08 inch) long.
Feb 25, 2021 3104-1548 (ENTO-415NP)
Flea Beetle Control for Home Gardens Dec 5, 2017 3104-1549 (ENTO-251NP)
Grasshoppers Dec 21, 2021 3104-1550 (ENTO-483NP)
Hornworms in Home Gardens Dec 12, 2017 3104-1551 (ENTO-254NP)
Imported Cabbageworm in Home Gardens Dec 13, 2017 3104-1552 (ENTO-253NP)
Insect Pests of Potatoes in Home Gardens Dec 13, 2017 3104-1553 (ENTO-256NP)
Agromyzid Leafminers Mar 1, 2021 3104-1554 (ENTO-437NP)
Onion Thrips May 1, 2020 3104-1556 (ENTO-370NP)
Pepper Weevil Jun 6, 2022 3104-1558 (ENTO-507NP)
Pickleworm Mar 5, 2021 3104-1559 (ENTO-439NP)
Raspberry Crown Borer Dec 22, 2021 3104-1561 (ENTO-473NP)
Rhubarb Curculio
Adult rhubarb curculios are elongated, somewhat cylindrical beetles measuring about 13-19 mm (0.5-0.75 inch) in total body length. They have an obvious long snout that curves downwards from the head. Young adults have a dusty coating of yellow or orange powder that rubs off easily. Older beetles that have lost this dusty coating appear brownish-black in color. Mature larvae are legless white grubs with a brown head capsule. Rhubarb curculio larvae are only found in weedy hosts and not in rhubarb itself. There are a number of related, similar-looking weevils that occur on various weeds in the Asteraceae and Polygonaceae families.
Mar 5, 2021 3104-1563 (ENTO-430NP)
Rose Chafer Mar 1, 2021 3104-1564 (ENTO-436NP)
Rose Scale Apr 22, 2022 3104-1565 (ENTO-501NP)
Squash Vine Borer
Adult squash vine borers are robust, attractive moths with dark wings and conspicuous orange abdomens dotted with black spots. The legs are marked with orange, black, and white, and the hind legs are noticeably feathery. Adults measure about 13 mm (0.5 inch) long with a wingspan of about 32 mm (1.25 inches). The dark wings are held folded at rest; there is a short fringe of hairs on the trailing edge. Squash vine borer is a member of the clearwing moth family; translucent windows are visible in the hind wings when they are fully extended. The antennae are dark, somewhat flattened, and hooked at the tips. Overall, adult squash vine borers resemble paper wasps in appearance. They are active day fliers with a zig-zag flight and easily travel from field to field.
Mar 5, 2021 3104-1566 (ENTO-432NP)
Stalk Borer Dec 22, 2021 3104-1567 (ENTO-477NP)
Tarnished Plant Bug Apr 25, 2011 3104-1568
Vegetable Weevil
Adult weevils are a dull, gray-brown color, and about 6–8 mm (0.25–0.32 inch) long. Adults are somewhat bristly in appearance due to t stout hairs and dense scales on the body. Usually there is a set of dark diagonal markings framing a lighter colored V-shape on the wings, but these may wear off with age. Antennae are elbowed and there is a short, stout snout at the front of the head.
Mar 4, 2021 3104-1569 (ENTO-425NP)
Whitefringed Beetles May 6, 2020 3104-1571 (ENTO-379NP)
Carpenter Ants
Carpenter ants can be found outside on trees and sidewalks and indoor. Where they are found determines how best to control them. Inside they can be active indoors during many months of the year, usually during the spring and summer. When ants are active in the house during late winter/early spring (February/March), the infestation (nest) is probably within the household. In late spring large numbers of foraging ants may come in from outside looking for food and may not indicate and infestation. Outside carpenter ants become active in late spring and early summer and will be seen on tree trunks and sidewalks.
Jan 20, 2022 3104-1573 (ENTO-485NP)
Click Beetles Feb 2, 2021 3104-1575 (ENTO-409NP)
Clothes Moths Dec 21, 2021 3104-1576 (ENTO-471NP)
Flour and Grain Beetles Dec 21, 2021 3104-1577 (ENTO-469NP)
Fungus Gnats Mar 4, 2021 3104-1579 (ENTO-442NP)
Lace Bugs Apr 18, 2022 3104-1581 (ENTO-500NP)
Indian Meal Moth Dec 21, 2021 3104-1582 (ENTO-482NP)
Obscure Scale
Heavily infested trees will have large numbers of scales on twigs and branches. Scales may also be found on exposed roots and on the trunk of young trees. Scale insects feed on plant sap with their long thread-like mouthparts (stylets), which are several times longer than the insect itself.
Apr 18, 2022 3104-1583 (ENTO-499NP)
Wheel Bug Sep 29, 2021 3104-1585 (ENTO-458NP)
Wolf Spiders and Nursery Web Spiders Dec 22, 2021 3104-1586 (ENTO-475NP)
Yellow Ant Sep 30, 2021 3104-1587 (ENTO-458NP)
Carpet Beetles Jan 30, 2022 3104-1588 (ENTO-486NP)
Integrated Pest Management for Vegetable Gardens Sep 12, 2019 426-708 (ENTO-330NP)
Colorado Potato Beetle Nov 27, 2018 444-012 (ENTO-292NP)
Aphids in Virginia Small Grains: Life Cycles, Damage and Control Mar 20, 2019 444-018 (ENTO-306NP)
Insect Identification and Diagnosis Request Feb 27, 2020 444-113 (ENTO-196NP)
Giant Resin Bee
Size: about 0.75 inch (1.9 cm) Color: Black and yellow-brown Giant resin bees are large with a cylindrical body and large jaws. They have a dark head and abdomen with yellow-brown hair on the face, thorax, and the first segment of the abdomen behind the "waist." The wings are a transparent brown color that darkens toward the tips. Male giant resin bees have a truncated, squared abdomen while the females have a more tapered, pointed abdomen. Giant resin bees can be distinguished from bumblebees and carpenter bees by their cylindrical bodies and the appearance of their abdomens. Giant resin bees do not have hairy abdomens like bumblebees, nor are their abdomens shiny like carpenter bees. Hymenoptera: Megachilidae Megachile sculpturalis Smith.
Mar 19, 2020 444-206 (ENTO-358NP)
Black Vine Weevil
The adults feed on a wide variety of evergreen, deciduous, and herbaceous plants. The larval form is destructive on yew (taxus), hemlock, rhododendron, and several other broad-leaved evergreens. Adults and larvae will sometimes feed on strawberry and impatiens.
Mar 6, 2020 444-210 (ENTO-354NP)
Longhorned Beetles/Roundheaded Borers
Size: Larvae up to 3 1/4 inches (80mm) or more. Color: Adult longhorned beetles are medium to large cylindrical beetles, usually brown, reddish brown, or black in color. They are sometimes mottled or banded with white or gray. Larvae (roundheaded borers) are brown, reddish brown, or black. They are sometimes mottled or banded with white or gray. Adults are called longhorned beetles because of their long and distinctive 11-segmented antennae, often longer than the beetle's body. The thorax and wing covers on some species bear small, stout spines. Roundheaded borers (larvae) are elongate, cylindrical, and have large gnawing mandibles. The name roundheaded borer refers to the enlarged thorax directly behind the head. Order: Coleoptera, Family: Cerambycidae.
Mar 19, 2020 444-215 (ENTO-363NP)
Bark Beetles
Species identification is difficult because the adult beetles of the various species are very similar, cylindrical and hard-shelled. Over 600 species in the sub-family. Adult beetles are between 1/8 and 1/3 inch long. Nearly all bark beetles are black or brown. Bark beetles are in the Order: Coleoptera, Family: Curculionidae, Sub Family: Scolytinae.
Mar 19, 2020 444-216 (ENTO-353NP)
Aphids
Aphids, or plant lice, are small, soft-bodied insects. There are hundreds of different species of aphids, some of which attack only one host plant while others attack numerous hosts. Most aphids are about 1/10 inch long (2.54 mm), and though green and black are the most common colors, they may be gray, brown, pink, red, yellow, or lavender. A characteristic common to all is the presence of two tubes, called cornicles, on the back ends of their bodies. The cornicles secrete defensive substances. In some species they are quite long, while in others they are very short and difficult to see. Aphids feed in clusters and generally prefer new, succulent shoots or young leaves. Some species, known as wooly aphids, are covered with white, waxy filaments, which they produce from special glands. Order: Homoptera, Family: Aphididae
Mar 4, 2020 444-220 (ENTO-350NP)
Spider Mites
Spider mites (Family Tetranychidae, Order Acari) are not insects; they are closely related to spiders, harvestmen (daddy longlegs), and ticks. Unlike insects, which have six legs and three body parts, spider mites have eight legs and a one-part body. They also lack wings, antennae, and compound eyes. Individual spider mites are almost microscopic, yet when they occur in large numbers, they can cause serious damage. Dozens of species attack shade trees, shrubs, and herbaceous plants.
Apr 22, 2022 444-221 (ENTO-502NP)
Tarnished Plant Bug Dec 22, 2021 444-227 (ENTO-476NP)
Cabbage and Seedcorn Maggot Mar 25, 2022 444-231 (ENTO-495NP)
European Corn Borer Feb 4, 2019 444-232
Spruce Spider Mite
The spruce spider mite (Acari: Tetranychidae, Oligonychus unuguis (Jacobi)) lives in all areas of Virginia and is widely distributed throughout the temperate regions of the United States and Canada. It attacks spruce, arborvitae, juniper, hemlock, pine, Douglas fir, Fraser fir, and larch, among others.
Apr 22, 2022 444-235 (ENTO-503NP)
Catalpa Sphinx Caterpillar Apr 15, 2022 444-247 (ENTO-497NP)
White Pine Weevil
The white pine weevil (WPW) (Coleoptera: Curculionidae, Pissodes strobi (Peck)) is found throughout Virginia. Its preferred hosts are eastern white pine and Norway spruce, but it can attack Scotch and other pines as well.
May 6, 2020 444-270 (ENTO-377NP)
Eastern Tent Caterpillar
Larvae feed in the inner bark of live, healthy dogwood trees. The damaged area of the trunk or branch swells and eventually the bark will fall off. Leaves turning red prematurely in mid-summer on a lone branch are an early sign of dogwood borers. Infested branches and limbs will die. Dogwood borers often will not kill the tree in the first year, but reinfestation in successive years will. Plants attacked include: Dogwood, pecan, elm, hickory, and willow.
Mar 6, 2020 444-274 (ENTO-356NP)
Multicolored Asian Lady Beetle in Virginia
Multicolored Asian Lady beetles enter the house through small openings around windows, doors, and utility access points. In addition, they can enter the house by cracks in the siding and trim and through attic vents. Sealing those entry sites is the best method to keep them from becoming indoor pests later. Conduct a thorough energy audit of your house, as places where cold air can enter the house are places where this lady beetle can gain access. Fill all cracks and leaks with a fine quality silicone or silicone-latex caulk. Once inside, insecticides are not recommended except for severe cases. Sweep up with a broom and dustpan all beetles that collect in windowsills and on walls. Beetles can also be picked up with a vacuum cleaner but bags will need to be discarded so that beetles do not escape.
Mar 17, 2020 444-275 (ENTO-361NP)
Periodical Cicada
In Virginia both the 17-and 13-year cicadas damage many ornamental and hardwood trees. Oaks are commonly attacked but the most seriously damaged are newly planted fruit and ornamental trees such as apple, dogwood, peach, hickory, cherry, and pear. Pines and other conifers are not commonly attacked.
Jul 7, 2021 444-276 (ENTO-455NP)
Euonymus Scale Apr 15, 2022 444-277 (ENTO-498NP)
Lilac Borer/Ash Borer
The adult has clear wings and is wasp-like in appearance. Size: The moth is about 1 inch long with a wingspan of 1 1/2 inches. Color: The fore wings are brown or chocolate color and the hind wings are clear with a dark border. The larvae are pure white worms with brown heads. Order: Lepidoptera Family: Sesiidae Species: Podosesia syringae (Harris).
Mar 19, 2020 444-278 (ENTO-359NP)
Whiteflies
Whiteflies are white insects with pale yellow bodies that are approximately 2 mm long. They belong to the order Homoptera and are close relatives of aphids, scales, mealybugs, hoppers and cicadas.
May 6, 2020 444-280 (ENTO-378NP)
Thrips
Adult thrips are small, pale-yellow insects (occasionally black) with elongated bodies, and fringed wings. Their life cycle consists of an egg, nymph, pre-pupa, pupa and an adult. The exact time required for thrips to complete their life cycle varies with species, temperature and the host plant. Western flower thrips complete their life cycle, from egg to adult, in approximately 10 days at 80° F. Adults insert eggs in leaf tissue which hatch in approximately three days. Nymphs feed for four to five days and then drop from the plant to pupate in the soil. Adults emerge after two days of pupation and begin feeding.
May 1, 2020 444-281 (ENTO-373NP)
Field Guide to Stink Bugs
Field Guide to Stink Bugs of Agricultural Importance in the United States
May 12, 2020 444-356 (ENTO-68)
Asparagus Beetles Sep 29, 2022 444-620 (ENTO-521NP)
Stink Bugs Sep 16, 2022 444-621 (ENTO-517NP)
Wax Scale
Plants Attacked: Wax scale has well over 50 hosts, especially Japanese and Chinese hollies, pyracantha, spirea, ivy, hemlock, euonymus, and boxwood; Description of Damage: Infestations seldom kill plants directly, but seriously weaken them, reduce growth, and cause decline. Deposits of honeydew give rise to rampant growth of the black sooty mold fungus, particularly on burford and Chinese holly.
May 6, 2020 444-622 (ENTO-376NP)
Magnolia Soft Scale
Heavy magnolia soft scale infestations cause stunting of twigs and undersize leaves, visibly weakening the trees. Small trees may be killed. Large trees lose branches and tree shape may become irregular.
Mar 31, 2020 444-623 (ENTO-360NP)
Twobanded Japanese Weevil
The Japanese weevil has a long list of hosts, but is especially found on cherry laurel, broad-leaved evergreens, pyracantha, privet, barberry, euonymus, and many others. This weevil has also damaged vegetable and field crops in Virginia.
Mar 16, 2020 444-624 (ENTO-362NP)
Dogwood Twig Borer
The larvae tunnel in live twigs and feed down the center of the branch, making a long series of closely placed round holes for the exudation of frass. Periodically, the larvae cut off portions of the twig from within and continue to feed inside the twig on the green wood working their way down.
Mar 6, 2020 444-625 (ENTO-355NP)
Corn Earworm Biology and Management in Soybeans
Corn earworm, Helicoverpa zea, is the most common and destructive insect pest of soybeans grown in Virginia. Although infestation severity varies, about one-third of our acreage is treated annually. This costs farmers 1.5 to 2 million dollars annually, and requires the application of many pounds of insecticide to crop lands. We may never eliminate this pest from Virginia soybeans, but knowledge of the biology and use of best management practices can help limit insecticide controls to those fields that meet economic threshold criteria. This publication provides current information on corn earworm biology, prediction of outbreaks, pest advisories, scouting procedures, and recently revised economic thresholds.
May 12, 2020 444-770
Problem-free Shrubs for Virginia Landscapes
The most effective form of plant disease control in the landscape is prevention. Disease prevention can be as simple as choosing the right plant for the right place at planting time. This fact sheet was developed as a guide to shrubs that generally experience few problems in Virginia landscapes. Using these species for new plantings should help you avoid troublesome disease and insect problems in your landscape.
Jun 27, 2022 450-236 (PPWS-69P)
Problem-free Trees for Virginia Landscapes
Many of the tree species commonly planted in Virginia landscapes suffer from disease problems. Although some diseases can be cured, most must be controlled on a preventative basis. The best option for new plantings is to choose species that have a low risk of developing disease. Listed below, in alphabetical order, are some choices of problem-free trees for Virginia landscapes.
Jun 29, 2022 450-237 (PPWS-70P)
2022 Pest Management Guide - Field Crops Feb 3, 2022 456-016 (ENTO-461P)
2022 Pest Management Guide - Horticultural and Forest Crops Feb 15, 2022 456-017 (ENTO-463P)
2022 Pest Management Guide - Home Grounds and Animals
This 2022 Virginia Pest Management Guide provides the latest recommendations for controlling diseases, insects, and weeds for home grounds and animals. The chemical controls in this guide are based on the latest pesticide label information at the time of writing. Because pesticide labels change, read the label directions carefully before buying and using any pesticide. Regardless of the information provided here, always follow the latest product label instructions when using any pesticide.
Feb 11, 2022 456-018 (ENTO-462P)
Banded Ash Borer Jan 29, 2021 ENTO-133NP (ENTO-406NP)
Blow Flies
Adult blow flies are generally medium to large, robust flies. They vary in length, with the largest species measuring about 16 mm (0.6 inches) long.
Jan 29, 2021 ENTO-134NP (ENTO-407NP)
Brown Recluse Spider
Brown recluse spiders belong to a group of spiders commonly known as violin spiders or fiddlebacks. Their name refers to a characteristic fiddle-shaped pattern on their head region directly behind their eyes (never on the abdomen). Brown recluse spiders range in color from tan to dark brown, but often they are a golden brown.
Jan 29, 2021 ENTO-135NP (ENTO-408NP)
Cluster Fly
Adult cluster flies are medium-sized, robust, somewhat bristly flies about 7 mm (0.3 inches) long.
Feb 2, 2021 ENTO-136NP (ENTO-410NP)
House Fly
Adult house flies are medium-sized flies about 6 mm (0.25 inch) long. They are grayish-black in color, with 4 dark bands running the length of the thorax and conspicuous bristles on the body.
Mar 1, 2021 ENTO-137NP (ENTO-416NP)
Lice Found On Humans
Human head and body lice are wingless, flattened insects with mouthparts for sucking blood. The head is somewhat narrower than the rest of the elongated body. Adults are small, about the size of a sesame seed (2.5–3.5 mm; 0.1 inch).
Feb 12, 2021 ENTO-138NP (ENTO-420NP)
Imported Willow Leaf Beetle
Imported willow leaf beetle was identified in the United States in 1915. It likely arrived on landscape plants shipped from Europe, where it is native.
Mar 2, 2021 ENTO-139NP (ENTO-417NP)
Iris Borer
Adult iris borers are stout, medium sized moths with a wingspan of 3.8–5 cm (1.5–2 inches). The head and forewings are covered with purplish brown scales and the hind wings are yellowish. The forewings have thin dark zigzag lines, a more conspicuous dark kidney-shaped spot, and variable sooty shading around the margins
Mar 2, 2021 ENTO-140NP (ENTO-418NP)
Locust Borer
The locust borer is a native insect that attacks black locust (Robinia pseudoacacia L.) and its ornamental cultivars. Adult locust borers are conspicuous black and yellow beetles with long black antennae and reddish legs. There is a yellow W-shaped band across the wing covers with other yellow stripes.
Feb 12, 2021 ENTO-141NP (ENTO-423NP)
Psocids: Barklice and Booklice
Psocids are small, oval insects with soft bodies that usually measure only several millimeters long. A psocid measuring 6 mm (0.25 inches) long is rather large for this group of insects. Psocids generally occur in shades of brown, black, or pale colors; some have distinctive mottled or striped markings.
Mar 5, 2021 ENTO-143NP (ENTO-440NP)
Crab Lice
Crab lice are very small (1.5–2 mm; 0.06–0.08 inch), wingless, flattened insects with mouthparts for sucking blood. The body is about as wide as it is long, broadest at the “shoulders”, with a small head.
Feb 12, 2021 ENTO-144NP (ENTO-413NP)
Galls Made by Wasps
Gall wasps attack primarily oak trees, and are found on roots, flowers, and acorns, but especially the leaves and twigs. Roses and brambles (blackberries and raspberries) also are attacked by gall wasps. These insects have complicated life cycles, and the galls they produce occur in an endless variety of shapes and colors. In some species, alternate generations produce distinctly different galls.
Jun 6, 2022 ENTO-145NP (ENTO-505NP)
Galls Made by Aphids, Adelgids, Phylloxerans, Psyllids, and Midges
Galls made by made by aphids, adelgids, phylloxerans, psyllids, and midges occur on many different plants. Galls are abnormal growths of plant tissue induced by insects and other organisms. Gall-making parasites release growth-regulating chemicals as they feed, causing adjacent plant tissues to form a gall. The parasite then develops within the relative security of the gall. Most are harmless to trees, but a few are pests.
Jun 2, 2022 ENTO-146NP (ENTO-506NP)
Galls and Rust made by Mites
Galls are abnormal growths of plant tissue induced by insects and other organisms. Gall-making parasites release growth-regulating chemicals as they feed, causing adjacent plant tissues to form a gall. The parasite then develops within the relative security of the gall. Galls come in an endless variety of forms. Many are strikingly colored or curiously shaped. Each gall-making species causes a gall structurally different from all others. By noting the type of host plant and the structure of the gall, one can identify the gall-making mite without actually seeing it.
May 8, 2015 ENTO-147NP
Large and Unusual Insects Found in Virginia
Several different insects are found in Virginia that cause concern due to their large size and coloration. They are for the most part harmless and just curiosities of nature.
Mar 2, 2021 ENTO-148NP (ENTO-419NP)
Native and Solitary Bees in Virginia
Although honey bees are well known for pollination and honey production, other bees at times impact humans in various ways. These native bees range from beneficial to annoying, sometimes at the same time. Native bees are important pollinators for fruit and vegetables.
Feb 12, 2021 ENTO-151NP (ENTO-424NP)
Yellow Poplar Weevil
Rice-shaped holes about 1/16 inches result from adult feeding. Larval feeding forms mines, usually two per leaf. If they are both on the same side of midrib, one is extensive, and the other dwarfed. If the insect lays eggs on opposite sides of the midrib, both mines develop normally.
May 6, 2020 ENTO-172NP (ENTO-380NP)
Buck Moth Dec 21, 2017 ENTO-18NP (ENTO-258NP)
Spotted Lanternfly, Lycorma delicatula (White) (Hemiptera: Fulgoridae)
The spotted lanternfly (SLF) originates from China where its presence has been documented in detail dating as far back as the 12th century.
Aug 17, 2022 ENTO-180NP (ENTO-515NP)
Hag Moth Caterpillar Dec 21, 2017 ENTO-19NP (ENTO-259NP)
Hickory Horned Devil Dec 21, 2017 ENTO-20NP (ENTO-260NP)
Mosquitos and their Control
The key to controlling mosquitoes is removing the standing or stagnant water where they live.
Dec 21, 2021 ENTO-202NP (ENTO-470NP)
Velvet Ants Dec 21, 2017 ENTO-22NP (ENTO-263NP)
Fall Cankerworm
Cankerworms are also known as inchworms, loop worms, and spanworms - this is credited to their distinctive way of moving. In order to travel, a cankerworm must grab leaves or branches with its front legs and then pull the rest of its body forward. This causes the abdomen area to contract and gives the worm the appearance of arching its back.
Feb 5, 2021 ENTO-223NP (ENTO-404NP)
Springtails Dec 21, 2017 ENTO-23NP (ENTO-262NP)
Silverfish and Firebrats Dec 21, 2017 ENTO-24NP (ENTO-261NP)
Stink Bugs Oct 13, 2017 444-621 (ENTO-242NP)
Ground Beetles Dec 13, 2017 ENTO-249NP
Pest Alert: Spotted Lanternfly Identification and Reporting in Virginia Jul 7, 2022 ENTO-265NP (ENTO-513NP)
Possible Spotted Lanternfly Egg Mass Look-alikes in Virginia May 16, 2018 ENTO-276NP
Possible Spotted Lanternfly Immature Look-alikes in Virginia May 16, 2018 ENTO-277NP
Possible Spotted Lanternfly Adult Look-alikes in Virginia May 16, 2018 ENTO-278NP
Longhorned Tick Jun 25, 2018 ENTO-282NP
Darkling Beetles and Mealworms Jun 25, 2018 ENTO-283NP
Asian Needle Ant Jun 4, 2018 ENTO-29NP (ENTO-280NP)
What Virginians Need to Know About the 2022 Spotted Lanternfly Quarantine Expansion Jul 7, 2022 ENTO-319NP (ENTO-512NP)
Ciclo de Vida en Virginia de Spotted Lanternfly (Mosca de Alas Manchadas) Jun 24, 2019 ENTO-320NP
Residential Control for Spotted Lanternfly (SLF) in Virginia Aug 9, 2019 ENTO-322NP
Control de la Mosca Linterna con Manchas (Spotted Lanternfly- SLF) en Hogares de Virginia Aug 29, 2019 ENTO-322S
Spotted Lanternfly in Virginia Vineyards: Lycorma delicatula (White) (Hemiptera: Fulgoridae) Aug 17, 2022 ENTO-323NP (ENTO-516NP)
Mosca Linterna con Manchas (Spotted Lanternfly) en Viñedos de Virginia: Lycorma delicatula (White) (Hemiptera: Fulgoridae) Aug 20, 2019 ENTO-323S
Best Management Practices for Spotted Lanternfly in Yards and Landscapes Dec 17, 2019 ENTO-344NP
Managing the Asian Longhorned Tick: Checklist of Best Tick Management Practices for Horse Owners Mar 25, 2020 ENTO-348NP
Managing the Asian Longhorned Tick: Checklist for Best Management Practices for Cattle Producers May 7, 2020 ENTO-382NP
Best Management Practices for Spotted Lanternfly on Christmas Tree Farms Feb 15, 2021 ENTO-402NP
Acrobat Ant Jan 29, 2021 ENTO-405NP
Ligurian Leafhopper Feb 12, 2021 ENTO-412NP
Drain Fly Feb 25, 2021 ENTO-414NP
Insect and Mite Pests of Boxwood
Three pests, the boxwood leafminer, mite and psyllid commonly attack American and English boxwood in Virginia and cause spotting, yellowing, and puckering of leaves.
Apr 3, 2019 ENTO-42NP (ENTO-314NP)
Wood Cockroaches Mar 4, 2021 ENTO-426NP
Jumping Worms Mar 4, 2021 ENTO-427NP
Millipedes Apr 10, 2019 ENTO-43NP (ENTO-317NP)
Phorid Flies Mar 1, 2021 ENTO-433NP
Paper Wasps Mar 1, 2021 ENTO-435NP
Non-biting Midges Mar 3, 2021 ENTO-438NP
Gloomy Scale
Description of Damage: The bark becomes roughened and encrusted with scales. Branches and limbs die back and result in a rapid decline in tree vigor, occasionally resulting in the death of trees. Seriously weakened trees are common in Virginia as a result of scale populations, especially red and silver maples.
Apr 29, 2019 ENTO-44NP (ENTO-318NP)
Buprestid Beetles and Flathead Borers Mar 4, 2021 ENTO-441NP
Box Tree Moth Mar 10, 2021 ENTO-445NP
Insect Identification Lab
Welcome to the Insect Identification Laboratory at Virginia Tech. The Insect Identification Lab covers all insects found in all situations and commodities in Virginia. This diagnostic lab started in 1967 and is a service for Extension Agents and Citizens of Virginia.
Apr 30, 2019 ENTO-45NP
Pavement Ant Dec 21, 2021 ENTO-467NP
Ladybird Beetles in Houses and Buildings Dec 21, 2021 ENTO-472NP
Potato Leafhopper Jan 12, 2022 ENTO-474NP
Avoiding Fire Ant Stings Dec 22, 2021 ENTO-481NP
Yellowjackets
This is a factsheet on yellowjackets in Virginia.
Apr 10, 2019 ENTO-49NP (ENTO-316NP)
Parsleyworm Feb 6, 2022 ENTO-490NP
Red Imported Fire Ant Logger Self-Inspection Checklist Feb 25, 2022 ENTO-492NP
Striped Cucumber Beetle
In Virginia, cucurbits are attacked by two native species of cucumber beetles, the striped cucumber beetle, A. vittatum, which is featured in this document, and the spotted cucumber beetle, Diabrotica decimpunctata howardi (Mannerheim), which is discussed in a separate fact sheet.
May 12, 2020 ENTO-61NP
Spiders of Medical Concern in Virginia
Several species of spiders found in Virginia have fearsome reputations for giving painful bites resulting in life-threating complications.
Feb 10, 2020 ENTO-73NP (ENTO-346NP)
Parasitic Wasps
Parasitic wasps, also called parasitoids, are found in multiple families within the insect order Hymenoptera, which also contains the sawflies, bees, and wasps.
Feb 10, 2020 ENTO-74NP (ENTO-345NP)
Stinging Caterpillars: Slug Caterpillars and Flannel Moths
Slug caterpillars in the family Limacodidae move with a slow gliding motion rather than walking, much like a slug. Some slug caterpillars are brightly colored with bumps, protuberances, or appendages.
Mar 18, 2020 ENTO-75NP (ENTO-347NP)
Emerald Ash Borer: Options for Landowners
Emerald ash borer (EAB) is found in all regions of Virginia. Some areas have established populations with a high level of ash tree mortality and other areas are seeing it for the first time. With a wider spread of infestation many homeowners are seeking methods to protect their ash trees.
Dec 17, 2019 ENTO-76NP (ENTO-343NP)
Spotted Lanternfly Life Cycle in Virginia Jul 8, 2019 ENTO-268NP (ENTO-321NP)
Larder Beetle Sep 19, 2018 ENTO-286NP
Crapemyrtle Bark Scale Nov 23, 2021 ENTO-465NP
Red Imported Fire Ant Farmer Self-Inspection Checklist Mar 8, 2022 ENTO-493NP
Identification and Life Cycle of Spotted Lanternfly in Virginia Mar 18, 2022 ENTO-268NP (ENTO-494NP)
Mortality of Great Rhododendron (Rhododendron maximum) in Virginia
Since 2015, Extension specialists from Virginia Tech (VT) have visited and collected plant and soil samples from several large areas of dying great rhododendron (Rhododendron maximum) in Virginia’s mountainous regions. In 2016 VT specialists met with Virginia Department of Forestry, US Forest Service personnel, and other experts to revisit some of these sites. No consistent cause of this mortality has yet been identified. It is possible that a variety of factors are stressing the rhododendrons in these areas to a point where opportunistic pathogens or insects can successfully attack and kill them. The following information summarizes our observations and diagnostic results from four separate great rhododendron mortality sites in Virginia. This information is not equivalent to a research study, which would also include samples taken from healthy great rhododendron for comparison; however, we are confident that we have ruled out two diseases that are frequently mentioned both online and anecdotally as a cause of this mortality, specifically Phytophthora root rot and Botryosphaeria dieback.
Aug 21, 2019 SPES-151P
VCE Ag Today: Spotted Lanternfly – A Threat to Virginia? Apr 12, 2021 VCE-1027-30NP