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Photo#1809546
Male dolichopodid - Neurigona - male

Male dolichopodid - Neurigona - Male
Presidio, Dragonfly Creek, San Francisco County, California, USA
May 4, 2020
Size: ca 5 mm
Found on the trunk of a coast redwood tree and collected. I expected this to be Medetera but the shape of M is wrong, I think, and it keys to Chrysotus, which is pretty clearly wrong by size and habitus. :) For the MND key: Vertex not strongly excavated (?, some shrinkage of eyes as usual), C continuous to tip of M, R4+5 and M converging, I don't see femoral bristle, disc of scutum evenly convex?

Images of this individual: tag all
Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male Male dolichopodid - Neurigona - male

Moved

Moved
Moved from Longlegged Flies.

 
Thanks -
but the BG Info page currently states that this species is only found east of the Rockies - so either the range info need to be corrected or this is an unlikely species ID?

 
My apologies...
I misread the location.

Should be Neurigona albospinosa but I have not examined specimens of that species yet so I cannot say for certain.

Neurigoninae?
Neurigoninae?

 
thanks -
John. Added several more images, sorry this observation has become so bloated with bad pics. I switched to the MCAD key (forgot it included all New World genera) - if you assume there is a flattened area on the posterior scutum (I can kind of see it now), it is then pretty easy to key to Neurogonini and Neurigona (acrostichal setae biseriate, pic added; flagellomere 1 flattened in anterior view; not Bickelomyia or Viridigona).

Thorax and abdomen certainly not yellow, more of a uniform dark brown/black as best I can see, hmm...

So, maybe a male Neurigona?

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