Sightings – Beetles

Observer: Paul Lauenstein

Observation Date: 8/6/11

Observation Time: 8:10 a.m.

Observation Location: 4 Gavins Pond Road (back yard)

Common Name: Banded Net-Winged Beetle

Scientific Name: Calopteron discrepans

Comments: This colorful beetle is found throughout the eastern U.S. Its bright color and contrast warn predators that they taste bad if eaten.

More Information: University of Florida

Banded Net-Winged Beetle

 

Observer: Paul Lauenstein

Observation Date: 4/3/14

Observation Time: 2:45 p.m.

Observation Location: Gavins Pond area

Common Name: Blister Beetle

Scientific Name: Tricrania sanguinipennis

Comments: Blister beetles receive their common name from the ability of their hemolymph to produce blistering on contact with human skin. Hemolymph is often exuded copiously by reflexive bleeding when an adult beetle is pressed or rubbed. Blisters commonly occur on the neck and arms, as the result of exposure to adult beetles attracted to outdoor lights at night.

The blistering agent is cantharidin, an odorless terpene (exo-1,2-cis-dimethyl-3,6-ep- oxyhexahydro-phthalic anhydride) occurring elsewhere only in beetles of the family Oedemeridae (Arnett 2008). Cantharidin or cantharides (dried, pulverized bodies of adult beetles) was once employed extensively in human and veterinary medicine, primarily as a vesicant and irritant and is still used in the U.S. as the active ingredient in a proprietary wart remover (Epstein and Epstein 1960, Kartal Durmazlar et al, 2009). Taken internally or absorbed through the skin, cantharidin is highly toxic to mammals. There is an extensive literature dealing with its reputed aphrodisiacal properties and numerous reports of human poisonings, both accidental and deliberate. Source: http://entnemdept.ufl.edu/creatures/urban/medical/blister_beetles.htm

More Information: PBase

Blister Beetle

Blister Beetle

 

Observer: Paul Lauenstein

Observation Date: 8/6/15

Observation Time: 12:50 p.m.

Observation Location: Gavins Pond area

Common Name: American Carrion Beetle

Scientific Name: Necrophilia americana

Comments: From spring through fall, during daylight, a few hours after flies begin arriving at a carcass, the adult beetles will arrive as well. They immediately begin eating the already hatching fly larvae, mating, and laying their own eggs. As long as the carcass lasts, the adults will remain eating competitors to give their own larvae a chance to eat and grow. Upon hatching from the eggs, the larvae will eat both the carcass and other larvae that are within it. Eventually the larvae will fall to the ground, dig into the dirt, and pupate. Overwintering is done by adults.

More Information: Wikipedia

Observer: Paul Lauenstein

Observation Date: 6/1/13

Observation Time: 4:00 p.m.

Observation Location: Ward’s Berry Farm

Common Name: Colorado Potato Beetle

Scientific Name: Leptinotarsa decemlineata

Comments: These striking beetles were eating eggplant leaves. Colorado potato beetles have developed resistance to all known classes of pesticides.

More Information: Organic Garden Info

Colorado Potato Beetle

 

Observer: Paul Lauenstein

Observation Date: 7/12/10

Observation Time: 8:25 a.m.

Observation Location: Gavins Pond Road

Common Name: Dogbane Leaf beetle

Scientific Name: Chrysochus auratus

More Information: insectidentification.org

Dogbane Beetle

Observer: Paul Lauenstein

Observation Date: 7/13/13

Observation Time: 10:30 a.m.

Observation Location: Soccer parking area by Gavins Pond

Common Name: Fourteen-spotted leaf beetle

Scientific Name: Cryptocephalus guttulatus

Comments: Count the spots and you’ll know how this beetle got its name.

More Information: Insects of West Virginia

Fourteen-Spotted Leaf Beetle

Observer: Paul Lauenstein

Observation Date: 5/17/13

Observation Time: 11:30 a.m.

Observation Location: Gavins Pond Dam

Common Name: Galerucella beetle

Scientific Name: Galerucella calmariensis

Comments: The Neponset River Watershed Association introduced these European beetles in Fowl Meadow in Canton and Norwood to control invasive purple loosestrife. They have spread to Sharon, where they are having the desired effect of keeping the invasive purlple loosestrife in check so native plants can thrive.

In upper left of the photo, you can see beetle eggs.

More Information: Neponset River Watershed Association

Galerucella Beetle

Observer: Paul Lauenstein

Observation Date: 6/17/11

Observation Time: 5:05 p.m.

Observation Location: Gavins Pond Dam

Common Name: Galerucella beetle larvae

Scientific Name: Galerucella calmariensis (or G. pusilla)

Comments: Galerucella beetles eat only purple loosestrife, an invasive exotic weed that has been displacing native wetland plants and reducing biodiversity. The Neponset River Watershed Association has been “ranching” and releasing Galerucella beetles, and they are now showing up in Sharon.

More Information: Neponset River Watershed Association

Galerucella Beetle Larva

Galerucella Beetle Larva

Galerucella Beetle Larva

Galerucella Beetle Larva

Galerucella Beetle Larva

Galerucella Beetle Larva

Galerucella Beetle Larva

Observer: Paul Lauenstein

Observation Date: 7/4/11

Observation Time: 4:05 p.m.

Observation Location: Gavins Pond

Common Name: Japanese Beetle

Scientific Name: Popillia japonica

Comments: Japanese beetles are not very destructive in their native Japan, where they are naturally controlled by indigenous predators, but in North America it is a noted pest of about 200 species of plants including rose bushes, grapes, hops, canna, crape myrtles, birch trees, linden trees, and others.

More Information: Wikipedia

Observer: Paul Lauenstein

Observation Date: 6/19/13

Observation Time: 2:20 p.m.

Observation Location: Gavins Pond Dam

Common Name: Lady Beetle

Scientific Name: Harmonia axyridis

Comments: Multicolored Asian lady beetles come in different color patterns. Some, like this one, don’t have black spots.

More Information: Wikipedia

Lady Beetle

Observer: Paul Lauenstein

Observation Date: 6/4/11

Observation Time: 5:30 p.m.

Observation Location: Gavins Pond Dam

Common Name: Lady Beetle

Scientific Name: Harmonia axyridis

Comments: Lady beetles have variable coloration.

More Information: Wikipedia

Lady Beetle

Lady Beetle

Observer: Paul Lauenstein

Observation Date: 6/5/13

Observation Time: 12:20 p.m.

Observation Location: Gavins Pond Dam

Common Name: Lady Beetle larva

Scientific Name: Harmonia axyridis

Comments: Lady beetle larvae don’t look much like the adults. Lady beetles eat aphids, so they can be beneficial for agriculture.

More Information: University of Minnesota

Lady Beetle Larva

Observer: Paul Lauenstein

Observation Date: 9/30/13

Observation Time: 2:45 p.m.

Observation Location: 4 Gavins Pond Road (front yard)

Common Name: Locust borer beetle

Scientific Name: Megacyllene robiniae

Comments: I spotted this beetle near locust trees.

More Information: Tumblr: Animal World

Locust Borer Beetle

Observer: Paul Lauenstein

Observation Date: 7/15/12

Observation Time: 4:50 p.m.

Observation Location: Gavins Pond Road – soccer field parking lot

Common Name: Red Milkweed Beetle

Scientific Name: Tetraopes tetrophthalmus

Comments: This striking red beetle was crawling on a milkweed leaf. Its scientific name means “four eyes” because of its black spots that look like eyes.

More Information: BugGuide

Red Milkweed Beetle

Red Milkweed Beetle

Red Milkweed Beetle

Red Milkweed Beetle

Observer: Paul Lauenstein

Observation Date: 5/30/14

Observation Time: 12:10

Observation Location: Power lines near Walpole St.

Common Name: Six-spotted tiger beetle

Scientific Name: Cicindela sexguttata

Comments: Female six-spotted tiger beetles lay eggs in sandy patches. When they hatch, the larvae burrow into the ground. The larvae lie in wait until small arthropods walk by. Then they pounce much like a jack in the box. The larvae pupate after a year. Six-spotted tiger beetles have a total lifespan of about five years.

More Information: Tiger Beetle

Six-Spotted Tiger Beetle

Six-Spotted Tiger Beetle

Six-Spotted Tiger Beetle

Observer: Paul Lauenstein

Observation Date: 6/25/11

Observation Time: 3:20 p.m.

Observation Location: Gavins Pond Dam

Common Name: Willow Leaf Beetle

Scientific Name: Plagiodera versicolora

Comments: I got help identifying this tiny beetle at www.bugguide.net. I set up a free account and uploaded my photo. In a few days I received an email from one of their entomologists with the identification. Given that there are thousands of species of insects, bugguide.net is a valuable resource for identification.

More Information: BugWood

Willow Leaf Beetle

Willow Leaf Beetle