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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) » Cecidomyiidi » Asphondyliini » Schizomyia » Schizomyia eupatoriflorae
Photo#1281903
Cecidomyiidae on White Snakeroot - Schizomyia eupatoriflorae
Copyright © 2016 MJ Hatfield

Cecidomyiidae on White Snakeroot - Schizomyia eupatoriflorae
100 Acre Wood, Winneshiek County, Iowa, USA
August 25, 2016
White Snakeroot, Ageratina altissima
1. Is this what Gagne (Red Book) calls Neolasioptera eupatoriflorae?
2. I continue to have a problem with rearing galls as there is a fine line, for me, between desiccation and rot. I think I have success when I collect galls at the "right" time, whatever that is. I've put off collecting these but do not know when the 'right' time might be.

September 9, 2016: wasp
tag · login or register to post comments
Contributed by MJ Hatfield on 26 August, 2016 - 7:10am
Last updated 1 April, 2020 - 3:25pm

Hi MJ
Just saw some of these galls here in the woods today, thought I'd check to see if they're on BugGuide, and here they are! I saw two slightly older-looking galls that were actually rotting on the plant...curious. One of them that I tore into had a bright orange-red fly larva in it that seemed to be a relatively active mover, and I suspect maybe it is a decomposer that arrived when the gall started to rot.
… John van der Linden, 27 August, 2016 - 1:24pm login or register to post comments

 
These were the first
I've ever seen and White Snakeroot is everywhere, every year. Curious.
Also, I sort of assumed that when the galls rot then the life inside might also be going down, however I've opened other Gall fly galls that were rotting to find the orange Gall Fly larvae or pupae still active and alive. Perhaps I should go collect the galls.
… MJ Hatfield, 27 August, 2016 - 1:44pm login or register to post comments

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