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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Bibionomorpha » Gall Midges (Cecidomyiidae) » Rhopalomyia
Photo#274814
Amorpha canescens galls - Rhopalomyia
Copyright © 2008 MJ Hatfield

Amorpha canescens galls - Rhopalomyia
Weaver Dunes, Wabasha County, Minnesota, USA
August 6, 2008
Size: 4 mm
Distinctive red conical galls on Amorpha canescens
Felt says in "Plant Galls & Gall Makers" (p 276) that it is a midge, ?Diarthrohomyia sp.
Gagne says in "The Plant Feeding Gall Midges of North America" that it is a Rhopalomyia sp. but he goes on to say that Diarthronomyia is a subgenus of Rhopalomyia

Images of this individual: tag all
Amorpha canescens galls - Rhopalomyia Amorpha canescens galls - Rhopalomyia Amorpha canescens gall larva - Rhopalomyia Amorpha canescens gall larva - Rhopalomyia Amorpha canescens gall larva - Rhopalomyia
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Contributed by MJ Hatfield on 12 May, 2009 - 4:53pm
Last updated 19 October, 2009 - 6:30pm

Moved
Moved from Gall Midges.
… MJ Hatfield, 18 May, 2009 - 9:11pm login or register to post comments

ID uncertain
It sounds to me as if Gagne is doubtful that these galls are caused by a Rhopalomyia: "...but the gall makers were apparently not preserved. Rhopalomyia spp. are associated principally with Asteraceae" [whereas Amorpha is in Fabaceae]. Even if the genus is correct, the species is unknown. I'm sure Dr. Gagne would be interested in seeing a specimen if you succeed in rearing adults.
… Charley Eiseman, 12 May, 2009 - 5:44pm login or register to post comments

 
Thank you. I'm going to keep
Thank you.
I'm going to keep trying to raise these, if not this year then another. I still have some galls, some browning by now but some still reddish. So, for now, ID is unknown, except to family?
… MJ Hatfield, 12 May, 2009 - 6:19pm login or register to post comments

 
Placement
I guess it wouldn't hurt to move the images to Rhopalomyia, since as far as is known these galls are made by a midge in that genus. I was just pointing out that Gagne seems to be somewhat skeptical of this. But we can always fix it if/when new information comes to light.
… Charley Eiseman, 12 May, 2009 - 6:37pm login or register to post comments

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