Thread subject: Diptera.info :: Muscidae: Phaonia subventa?

Posted by nick upton on 14-05-2010 17:23
#1

Is this the correct ID?

Wiltshire, southwest UK 14.5.10

Posted by Stephane Lebrun on 14-05-2010 18:26
#2

Phaonia rufiventris.

Posted by nick upton on 14-05-2010 20:30
#3

OK, many thanks, Stephane. I thought rufiventris would have more visible orange on the thorax, but maybe not visible from this angle, and there must be another character you are using to separate this from subventa.

Posted by Stephane Lebrun on 14-05-2010 21:26
#4

Phaonia rufiventris : 1 presut ac. ; scutellum entirelly orange (at most darkened at extreme base ; mid tibia with 3-4 post. setae; fore tibia without p. setae.
Phaonia subventa : 2 presut ac. ; scutellum almost always broadly darkened at base ; mid tibia with 2 p. setae ; fore tibia with p. setae.
(There is a third one, Phaonia bitincta. ;) ).

Posted by nick upton on 14-05-2010 22:11
#5

Many thanks Stephane, great feedback; I may be able to separate these two now, unless the third one confuses me!