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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » Calyptratae » Oestroidea » Polleniidae » Cluster flies (Pollenia) » Pollenia rudis
Photo#1754001
Pollenia rudis? - Pollenia rudis - male
Copyright © 2019 California Academy of Sciences, photo K Schneider

Pollenia rudis? - Pollenia rudis - Male
Presidio, Dragonfly Creek, San Francisco County, California, USA
October 1, 2019
Size: 7 mm

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Pollenia rudis? - Pollenia rudis - male Pollenia rudis? - Pollenia rudis - male Pollenia rudis? - Pollenia rudis
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Contributed by Ken Schneider on 17 November, 2019 - 9:15pm
Last updated 18 November, 2019 - 11:27am

Moved
Moved from Cluster flies.

Thanks again, John, appreciate the help.
… Ken Schneider, 18 November, 2019 - 11:27am login or register to post comments

Hello
I see pale/golden hairs on f3, which indicates P. angustigena. Simply verify the presence of golden hairs on the p and pv surface of f2 and f3. Lighting sometimes effects our perception of golden hairs. Also check the av surface of t3 for erect av hairs in addition to av setae. P. angustigena may have no av hairs or many av hairs between av setae on t3. However, the av hairs will be weaker and less erect than the av hairs on t3 of P. rudis.
… John Sherkosky, 18 November, 2019 - 9:34am login or register to post comments

 
Thanks John!
I think the yellowish look is an artifact of the lighting - I checked the specimen and I am only seeing dark hairs on the posterior surface of f2 and f3 and I added a photo showing three stout spines on the anterior surface of the mid-tibia, so I think this may be rudis?
… Ken Schneider, 18 November, 2019 - 10:56am login or register to post comments

 
Hello, Ken :-)
then it is a male Pollenia rudis.
As you know, pediculata has a bundle of pale hairs on th h-sc node. So your options are angustigena or rudis.

Best wishes,
John
… John Sherkosky, 18 November, 2019 - 11:23am login or register to post comments

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