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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 » Oligotrophini » Rhopalomyia » Coyote Brush Bud Gall Midge (Rhopalomyia californica)
Photo#262388
Gall on coyote brush (Baccharis pilularis) - Rhopalomyia californica
Copyright © 2009 John Callender

Gall on coyote brush (Baccharis pilularis) - Rhopalomyia californica
Carpinteria Salt Marsh Nature Park, Carpinteria, CA, Santa Barbara County, California, USA
March 29, 2009
Size: ~1 cm
This is a gall, I believe, at the end of the stem of a coyote brush (Baccharis pilularis). I'm curious if anyone can make a guess as to what kind of insect produced the gall.
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Contributed by John Callender on 1 April, 2009 - 1:40am
Last updated 4 February, 2010 - 6:52pm

Rhopalomyia californica (midge)
I think the galls of this species are typically lumpier, not perfectly spherical, but there don't seem to be any other options for a terminal bud gall on coyote brush.
… Charley Eiseman, 1 April, 2009 - 3:03am login or register to post comments

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