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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Aschiza" » Hover Flies (Syrphidae) » Syrphinae » Syrphini » Toxomerus » Toxomerus marginatus
Photo#145833
Toxomerus marginatus? - Toxomerus marginatus - male
Copyright © 2007 Aaron Schusteff

Toxomerus marginatus? - Toxomerus marginatus - Male
At ~3860' on Sawmill Creek, Clear Creek Management Area (BLM), San Benito County, California, USA
September 9, 2007
Postscript (9/1/19): Per comments below of Lloyd & Bill, the individual in this photo is a male...while the one in the (previously linked) photo below is a female:

 

For more info, see remarks there.
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Contributed by Aaron Schusteff on 15 September, 2007 - 9:52pm
Last updated 2 September, 2019 - 1:37am

Thanks Lloyd & Bill
...for clarifying that the original post consisted of two separate individuals, a female & a male. I've unlinked the photos.
… Aaron Schusteff, 2 September, 2019 - 1:36am login or register to post comments

Echoing Lloyd`s comment about
Echoing Lloyd`s comment about two individuals. This is a male. Look at the yellow genital capsule. Final segment black in females. Toxomerus males have a very long triangular frons which can be confusing.
The other image is a female. They need to be separated.
… Bill Dean, 1 September, 2019 - 11:35am login or register to post comments

Two individuals?
These two photos seem to be of different individuals, I think one is likely male and one female.
… Lloyd Davidson, 11 July, 2017 - 9:31am login or register to post comments

You've nailed the ID.
Have you seen the visual key that Martin developed?

Bottom line: On the west coast, you'll encounter three Toxomerus spp.
1. T. marginatus
2. T. politus
3. T. orientalis (elsewhere T. geminatus)
… Ron Hemberger, 16 September, 2007 - 12:46am login or register to post comments

 
Thanks Ron
Yes, I saw Martin's key after seeing a comment elsewhere...it's very nice! (And helpful:-)
… Aaron Schusteff, 16 September, 2007 - 12:51am login or register to post comments

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