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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Aschiza" » Hover Flies (Syrphidae) » Syrphinae » Syrphini » Toxomerus » Eastern Calligrapher (Toxomerus geminatus)
Photo#321588
Syrphid on milkwort - Toxomerus geminatus
Copyright © 2009 Charley Eiseman

Syrphid on milkwort - Toxomerus geminatus
Scarborough Brook Conservation Area, Belchertown, Hampshire County, Massachusetts, USA
July 30, 2007
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Contributed by Charley Eiseman on 17 August, 2009 - 6:20pm
Last updated 17 August, 2009 - 10:39pm

Moved
Moved from Syrphid Flies.

Thanks! I thought maybe I was being overly optimistic, submitting a photo that doesn't show the whole abdomen.
… Charley Eiseman, 17 August, 2009 - 10:39pm login or register to post comments

 
Toxomerus is very easy for me.
One section of the pattern is enough in this case. (I look for what I call a "keyhole" on T. geminatus. It's a slight bit more complicated than that, but tough to verbalize.)

While I haven't completely worked this through, I think T. marginatus can be IDed by a single spot near the tail end of the abdomen.

OTHO, syrphids also include what I call "evil pairs" that can be impossible to separate from photos. Archtypical of these are Eupeodes and Syrphus in Tribe Syrphini.
… Ron Hemberger, 18 August, 2009 - 12:51am login or register to post comments

Toxomerus geminatus
A male
… Ron Hemberger, 17 August, 2009 - 10:29pm login or register to post comments

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