Resources by T.A. Dellinger
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.
|May 13, 2015||3104-1546(ENTO-157NP)|
|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.
|May 13, 2015||3104-1548(ENTO-153NP)|
|Pickleworm||May 13, 2015||3104-1559(ENTO-154NP)|
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.
|May 13, 2015||3104-1563(ENTO-155NP)|
|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.
|May 13, 2015||3104-1566(ENTO-158NP)|
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.
|May 13, 2015||3104-1569(ENTO-156NP)|
|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.
|Dec 10, 2014||444-206 (ENTO-96NP)|
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.
|May 19, 2015||ENTO-134NP|
|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.
|May 19, 2015||ENTO-135NP|
Adult cluster flies are medium-sized, robust, somewhat bristly flies about 7 mm (0.3 inches) long.
|May 19, 2015||ENTO-136NP|
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.
|May 19, 2015||ENTO-137NP|
|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).
|May 19, 2015||ENTO-138NP|
|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.
|May 20, 2015||ENTO-139NP|
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
|May 20, 2015||ENTO-140NP|
|Locust Borer, Megacyllene robiniae (Forst.) Coleoptera: Cerambycidae||
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.
|May 8, 2015||ENTO-141NP|
|Redheaded Ash Borer||
Adult redheaded ash borers have somewhat cylindrical, elongated bodies ranging from 4–13 mm (0.16–0.5 inches) long and tapered towards the tip of the abdomen. The head, thorax and legs are reddish brown and there are four yellow dorsal bands on the darker wing covers.
|May 7, 2015||ENTO-142NP|
|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.
|May 7, 2015||ENTO-143NP|
|Crab Lice, Pthirus pubis (L.) Psocodea: Phthiraptera; Pthiridae||
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.
|May 7, 2015||ENTO-144NP|
|Buck Moth||Dec 21, 2017||ENTO-18NP (ENTO-258NP)|
|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.
|Mar 11, 2016||ENTO-202NP|
|Velvet Ants||Dec 21, 2017||ENTO-22NP (ENTO-263NP)|
|Springtails||Dec 21, 2017||ENTO-23NP (ENTO-262NP)|
|Insect Identification Laboratory Annual Report 2016||Mar 7, 2017||ENTO-233|
|Silverfish and Firebrats||Dec 21, 2017||ENTO-24NP (ENTO-261NP)|
|Ground Beetles||Dec 13, 2017||ENTO-249NP|
|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|
|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.
|Aug 8, 2014||ENTO-73NP|
Parasitic wasps, also called parasitoids, are found in multiple families within the insect order Hymenoptera, which also contains the sawflies, bees, and wasps.
|Aug 8, 2014||ENTO-74NP|
|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.
|Aug 8, 2014||ENTO-75NP|
|Spotted Lanternfly Lifecycle in Virginia||Jan 31, 2019||ENTO-268NP (ENTO-305NP)|
|Larder Beetle||Sep 19, 2018||ENTO-286NP|