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Photo#150493
Syrphid Fly - Eristalis hirta - female

Syrphid Fly - Eristalis hirta - Female
Lacey (near Olympia), Thurston County, Washington, USA
October 4, 2007

Images of this individual: tag all
Syrphid Fly - Eristalis hirta - female Syrphid Fly - Eristalis hirta - female Syrphid Fly - Eristalis hirta - female Syrphid Fly - Eristalis hirta - female

Moved

Moved
Moved from Eristalis stipator.

Moved

 
Not Eristalis stipator
Not Eristalis stipator. ( See below )

Looks like Eristalis stipator
Looks like Eristalis stipator - stripe on face, bare arista (helpful photo), light hind margin on the abdominal tergites, black antennae and tibia (nice shot there!), and orange spots on T2 only are distinctive.

 
Eristalis
In E.stipator the occiput is not shining but dull. Also the markings on tergite 2 are often joined by a dull band. E. stipator is usually obviously pale haired on the scutum whereas this has dark hairs also.
Light margins to hind margin of abdominal tergites is found in many species. E. stipator has usually no dark hairs on the frons. The wing is often infuscated below stigma to middle of wing.
Pile on the posterior callus is yellow in E.stipator but dark brown in this specimen.
The orbits are gray dusted in E.stipator with a black frontal stripe but they are not like that in this specimen.
E. stipator has the pale posterior rims grayish not yellow like this. The wings are usually infuscated below stigma to middle of wing.

 
Wonderful information - thank
Wonderful information - thank you very much.

 
Eristalis stipator have whiti
Eristalis stipator have whitish hairs on the light bands , usually visible and tergite 4 has whirled hairs, usually visible.

 
Bill, these writeups are grea
Bill, these writeups are great! Is there any way you'd be willing to write up your diagnostic criteria into a little text file? I know various folks here have been finding them very useful (myself included) and they're often quite a bit easier than a key. Great stuff!

Moved
Moved from Eristalis.

Moved
Moved from Syrphid Flies.

Eristalis sp.
Check there to see if you have a match on species, though I doubt it. Eristalis is a tough one, but you do have two nice shots here. (On this genus, a straight-on face shot can eventually come in handy, if memory serves.)

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