Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Discussion, insects and people from the 2018 BugGuide Gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

Giant Ichneumon - Megarhyssa atrata - female

Giant Ichneumon - Megarhyssa atrata - Female
4 miles east of Ithaca, Tompkins County, New York, USA
June 8, 2005
After I looked at this photo on my computer I wondered what the second black "hair" is that seems to be coming from the same hole where this wasp has her ovipositor. I then found in "Intro to the Study of Insects" (Borror et. al.) that sometimes female ichneumons are unable to free themselves after ovipositing, or get eaten in the process of ovipositing. So the ovipositor stays in the hole while the rest of the wasp ends up elsewhere.

The day after I took this photo, I went back to the stump. Sure enough, there were quite a few waspless-ovipositors sticking out of this tree stump (which by the way was very popular among at least two species of ichneumons the week I took this photo). I hadn't noticed waspless-ovipositors at all on my first day of observing the wasps.

Great find
Great find, a very cool image!


Stephen Cresswell
Buckhannon, WV

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.