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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Aschiza" » Hover Flies (Syrphidae) » Eristalinae » Eristalini » Sericomyiina » Sericomyia » chalcopyga complex  (Sericomyia chalcopyga complex ) » Western Pond Fly (Sericomyia chalcopyga)
Photo#751701
? syrphid fly - Sericomyia chalcopyga
Copyright © 2013 Dick Wilson

? syrphid fly - Sericomyia chalcopyga
Bay Center 98527 Willapa, Pacific County, Washington, USA
March 16, 2013
Size: body length ~12mm
Found on vehicle on cool rainy day. Seemed early.
Locality: Coastal SW Washington State at the edge of Willapa Bay geo:lat=46 37.273 geo:lon=-123 56.814
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Contributed by Dick Wilson on 17 March, 2013 - 5:08pm
Last updated 13 December, 2013 - 10:59am

Moved
Moved from subgenus Sericomyia.
… v belov, 13 December, 2013 - 10:59am login or register to post comments

I think Sericomyia chalcopyga
I think Sericomyia chalcopyga via the key here. Specifically keyed if that's helpful:

1- face not extremely ventrally projected, I think I see a dark stripe in the center
2 abdomen with yellow markings, not mimicking bumble bees
7 face not completely yellow (can't quite tell, but species with completely yellow faces at this point are not correct - it's not lata or carolinensis)
9- abdomen with 3 pairs of maculae (not bifasciata)
10- maculae on 2nd tergum subequal to tergites 3-4 (not transversa)
11- maculae on 2nd tergum very distinct, not small/absent (not militaris)
12- face not strongly projected ventrally (not bifasciata)
13 margins of abdominal fasciae are somewhat concave, certainly quite separate
16- supra-alar pile is definitely black
17- abdominal bands are traverse, within the range of chalcopyga and not chrysotoxoides
… Kelsey J.R.P. Byers, 7 December, 2013 - 2:21am login or register to post comments

Moved
Moved from Syrphid Flies.
… Martin Hauser, 19 March, 2013 - 11:05am login or register to post comments

Moved for expert attention
Moved from ID Request.
… Ken Wolgemuth, 17 March, 2013 - 5:20pm login or register to post comments

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