Thread subject: Diptera.info :: Muscoidea USA 2011-VII-10 (= Muscidae: Phaonia cf. fuscana)

Posted by John Carr on 11-07-2011 01:20
#1
Another fly sat beside me on a bench in the woods.

Massachusetts, USA July 10, 2011

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Arista long haired.
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Katepisternum
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Calypters
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Mid, hind tibiae
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Side of head and thorax
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Edited by John Carr on 20-10-2012 21:39

Posted by Tony Irwin on 11-07-2011 19:03
#2
Looks like Helina to me

Posted by neprisikiski on 11-07-2011 19:08
#3
Hind tibia with postero-dorsal seta, than looks like a Phaonia.

Posted by Stephane Lebrun on 11-07-2011 19:09
#4
It is 100% like our palaearctic Phaonia fuscata.
Edited by Stephane Lebrun on 11-07-2011 19:33

Posted by John Carr on 11-07-2011 22:48
#5
Thank you. We have over 80 species of Phaonia in North America. The last revision to cover my region was in 1923, and I don't have it.

Posted by John Carr on 20-10-2012 21:39
#6
I found Malloch's revision. With a little imagination my fly keys to Phaonia fuscana Huckett (= fusca (Stein), preoccupied name), a common species in my area.

Posted by Nikita Vikhrev on 02-06-2017 12:53
#7
My opinion in this matter is based on the following material:
USA, RI, Coventry Co, 1♂, 1♀, identified as Ph. atlanis Malloch, 1923.
USA, TX, Brazos Co, 3♀♀ which keys to Ph. fuscana (= Ph. fusca Stein, 1989) on Malloch (1923).
Ph. atlanis fits Malloch (1923) description well (strong apical pd on t3; only 1 spine-like pv on f2; small size: 5-5.5 mm; setulae on ventral side of radial node; abdominal pattern as in Ph. fuscata).
Females from TX are of larger size and somewhat enigmatic:
1 female fits Ph. fuscata (radial node bare; abdomen with dark median vitta consisting of triangular spots; f2 with 1 spine-like pv).
Other 2 females have: radial node with 3-4 remarkably strong setulae; 2 pv setae on f2; abdominal pattern slightly different (Ph. fuscana ?)
So, John, check again your female specimen.
Edited by Nikita Vikhrev on 02-06-2017 18:34

Posted by Nikita Vikhrev on 02-06-2017 12:59
#8
Much more NA material requires to get taxonomy in order!