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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Gnats, Gall Midges, and March Flies (Bibionomorpha) » Fungus Gnats and Gall Midges (Sciaroidea) » Gall Midges and Wood Midges (Cecidomyiidae) » Gall Midges (Cecidomyiinae) » Lasiopteridi » Alycaulini » Neolasioptera
Photo#1514002
Cecidomyiidae, Neolasioptera perhaps eregeroni - Neolasioptera
Copyright © 2018 MJ Hatfield

Cecidomyiidae, Neolasioptera perhaps eregeroni - Neolasioptera
Ames High School Prairie, Story County, Iowa, USA
December 25, 2017
Size: 2.6 cm (gall on right)
December 25, 2017: JD Thompson collected interesting stems of Horseweed, Conyza canadensis

as well as stem galls (specific gall on RH side)
April 20 to May 15, 2018: parasitoid wasps


April 24, 2018: 1 beauty gall fly. But there were 2 spent gall fly pupal cases protruding from the gall; did not find a second fly.
April 27, 2018: I thought 3 days in the fridge would be enough to calm everybody such that I could try for more photos. Lost 1 wasp & in 10 seconds the fly flew off. Oh to get just ONE more!!
April 28, 2018: YES, ONE MORE FLY! and then a 2nd one.

In his Red Book (p.134) Gagné writes: "Larva in stem swellings, either rough and usually to one side of the stem or smooth, tapered...Neolasioptera eregeroni.

ID to genus based on the above and this:

Images of this individual: tag all
Cecidomyiidae, Neolasioptera perhaps eregeroni - Neolasioptera Cecidomyiidae, gall w/ spent pupa - Neolasioptera Cecidomyiidae, spent pupae - Neolasioptera Cecidomyiidae, dorsal - Neolasioptera Cecidomyiidae, lateral - Neolasioptera Cecidomyiidae, face - Neolasioptera
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Contributed by MJ Hatfield on 29 April, 2018 - 8:58am
Last updated 28 January, 2024 - 1:48pm

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