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Photo#31751
5012171 - Syrphus knabi - female

5012171 - Syrphus knabi - Female
Willow springs, Cook County, Illinois, USA
July 27, 2005
Size: ~1/2"

Moved

Syrphus knabi
Strongly pruinose yellow laterally on scutum, the very long hind metatarsus, orange above and tapering toward apex and much lighter than the other hind tarsi. The frons shining yellow at anterior margin and (maybe)brown spots directly above antennae ( difficult to tell but I think so), the yellow bands broadly overlapping side margins and hind tibia black on apical half, makes me think this is Syrphus knabi.... female (See also comments below.)

This is Syrphus species......
This is Syrphus species....... female.
Epistrophe grossulariae has a long black isosceles triangle on the frons stretching from directly above the antennae to the black in the ocellar triangle area and the dust spots never meet or nearly meet on the frons and the area of the occiput directly behind the ocellar triangle is shining but it is dusted in this specimen. Also the bands on tergite 3 and 4 reach the front margin of tergite for almost entire length in Epistrophe grossulariae.
In this specimen, especially on tergite 4, the bands diverge from front margin soon after middle (zoomed image ). The band on tergite 2 has a small notch on the posterior margin at the middle in Epistrophe grossulariae ( very occasionally a zoomed image is needed and very very rarely the notch area is only very slightly emarginated). This specimen is neither emarginated nor with a small notch. Also Epistrophe grossulariae has the antennae totally black ( zoomed image ) and also the posterior margin of the band on tergite 4 straight or almost straight but it is obviously arcuate in this specimen.

Female Epistrophe grossulariae
Characteristic are the very straight abdominal bands, and of course general shape and color!
Greetings,
Gerard Pennards

 
Thanks very much Gerard!
Thanks very much Gerard!

beeeeeeeeautiful
what a georgeous photo!

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