Ovipositing Megarhyssa macrurus (most likely) - Megarhyssa macrurus

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Parasitica" - Parasitoid Wasps » Braconid and Ichneumonid Wasps (Ichneumonoidea) » Ichneumonid Wasps (Ichneumonidae) » Rhyssinae » Giant Ichneumonid Wasps (Megarhyssa) » Long-tailed Giant Ichneumonid Wasp (Megarhyssa macrurus) » Megarhyssa macrurus macrurus

Photo#1382676

Copyright © 2017 Chaemerion

Ovipositing Megarhyssa macrurus (most likely) - Megarhyssa macrurus -

Ronan Park, Chicago, Cook County, Illinois, USA
June 6, 2017
Size: 3in body, 5in ovipositor

One individual, perhaps the same one, seen on two days ovipositing on same box elder (Acer negundo) tree in a park in an urban area of Chicago near the Chicago River. Ovipositor length and dark patterning on wings (see other photos) seems to indicate that this in M. macrurus and not M. greenei, however, I don't fully understand the identification remarks on the info page.

Images of this individual: tag all

Ovipositing Megarhyssa macrurus (most likely) - Megarhyssa macrurus - female

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Contributed by Chaemerion on 10 June, 2017 - 5:25pm
Last updated 7 April, 2023 - 12:22pm

Moved

Moved from Long-tailed Giant Ichneumonid Wasp.

… Jonathan Hoskins, 7 April, 2023 - 12:22pm

Moved

Moved from ID Request.

… Ken Wolgemuth, 10 June, 2017 - 6:57pm

Yes - M. macrurus…

See reference here.

… Ross Hill, 10 June, 2017 - 6:03pm

Thanks for the confirmation.

I looked at that reference, though, and didn't find it very helpful. The page for M. greenei is a little more helpful, stating "Females are distinguished from those of macrurus by having the forewing clear (unpigmented) along the basal vein." I'm having a hard time finding a clear answer as to which is the basal vein though.

… Chaemerion, 10 June, 2017 - 6:34pm

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