Resources by T.A. Dellinger

Title Available As Summary Date ID Author
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.
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)
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.
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)
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.
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)
Banded Ash Borer
Adult banded ash borers have somewhat cylindrical, elongated bodies ranging from 8–18 mm (0.3–0.7 inches) long and tapered towards the tip of the abdomen. Adults are grayish-black in color with lighter colored hairs all over the body. There is a yellow band on the leading edge of the thorax directly behind the head and several yellow bands across the wing covers.
May 19, 2015 ENTO-133NP
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.
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
Cluster Fly
Adult cluster flies are medium-sized, robust, somewhat bristly flies about 7 mm (0.3 inches) long.
May 19, 2015 ENTO-136NP
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.
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
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
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 Oct 8, 2012 ENTO-18NP
Hag Moth Caterpillar Oct 9, 2012 ENTO-19NP
Hickory Horned Devil Oct 9, 2012 ENTO-20NP
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 Oct 9, 2012 ENTO-22NP
Springtails Oct 9, 2012 ENTO-23NP
Insect Identification Laboratory Annual Report 2016 Mar 7, 2017 ENTO-233
Silverfish and Firebrats Oct 9, 2012 ENTO-24NP
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
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