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

Posted by Robert Heemskerk on 04-10-2008 15:38
#1

hi flyforum,

This fly was sitting on a blackberry in the edge of the forest.
I think Musciade (female) and with these strong fuscated crossveins Phaonia?

other features:
- plumose arista
- hair on eyes
- orange/golden anterior spiracle
- posterior setae
- apical bristles on tibia II are heavy
- 1 prescutellar ac (two hairs, so is this notation of 1 prescutellar correct? > 1 pair of prescutellar ac)
- no interfrontals
- no colouring on the end of it's scutellum.
- size ~ 10mm

0bvious is the yellow/orange couloured stroke of hairs on the backside of the tibia and beneath the apical bristles?

If wanted, I can crop some parts for more detail.

Edited by Robert Heemskerk on 04-10-2008 15:56

Posted by Robert Heemskerk on 04-10-2008 15:39
#2

a bit dorsal view

Edited by Robert Heemskerk on 04-10-2008 15:39

Posted by Robert Heemskerk on 04-10-2008 15:40
#3

interior view

Edited by Robert Heemskerk on 04-10-2008 15:40

Posted by javanerkelens on 04-10-2008 16:50
#4

Hello Robert,

Maybe a Helina sp.
(obscurata / evecta)

Greatings Joke

Edited by javanerkelens on 04-10-2008 16:54

Posted by Stephane Lebrun on 04-10-2008 19:23
#5

I think Helina too. Helina evecta would be a good candidate. Could I have a good view of leg 3, just to be sure ?

Posted by Robert Heemskerk on 04-10-2008 20:30
#6

Thanks you Joke and Stephane.
What's a good character for Helina sp. ?

I'll give you it's 3rd leg, not 'it's best leg'..

Just look underneath the wing-edge, there you the 3rd leg..

Edited by Robert Heemskerk on 04-10-2008 20:30

Posted by Robert Heemskerk on 04-10-2008 20:31
#7

I see some setae on the tibia and femur

Edited by Robert Heemskerk on 04-10-2008 20:32

Posted by Robert Heemskerk on 04-10-2008 20:32
#8

and one more.. look at the leg on the right.

Edited by Robert Heemskerk on 04-10-2008 20:33

Posted by Stephane Lebrun on 04-10-2008 21:32
#9

Thanks Robert. I'm convinced that it is Helina evecta.

- 1 prescutellar ac (two hairs, so is this notation of 1 prescutellar correct? > 1 pair of prescutellar ac)
Correct, scutum bristles are always taken by pair for notation.

What's a good character for Helina sp. ?
Not an easy question. If you found a Phaoniinae with no "Phaonia calcar" (pd on apical third of hind tibia) paired dark spots on tergits 3-4 and straight M1+2, there is every chance that you found an Helina. When the abdomen lacks the Helina spots (like this one), it is more difficult...

Posted by Robert Heemskerk on 04-10-2008 22:04
#10

Thank you Stephane, I'll take notice of it!