Thread subject: Diptera.info :: Diastata nebulosa?
Posted by Lukasz Mielczarek on 05-01-2010 22:59
#1
Under bark with sap run in mountain area. 5.12.2009. Poland
Edited by Lukasz Mielczarek on 05-01-2010 23:00
Posted by Lukasz Mielczarek on 06-01-2010 00:01
#2
....
Posted by Paul Beuk on 06-01-2010 10:37
#3
Could well be, but the lack of sufficient focus on the wing together with the size of the picture cannot make me rule out
Diastata ornata.
Posted by Lukasz Mielczarek on 06-01-2010 11:39
#4
I will try to make better photo.
I have only Stackelberg A .A.1970.Diastatidae.Opriedielitiel nasiekomych evropejskoj casti SSSR. G.Ya. Bei-Bienko (ed.). Leningrad
but without D. ornata.
What features distinguishing those species?
Posted by Paul Beuk on 06-01-2010 11:48
#5
Easiest and least variable characters:
ornata:
Cross vein r-m only just beyond the level where R1 reaches the costa;
costal setulae not reaching the apex of R4+5.
nebulosa:
Cross vein r-m clearly beyond the level where R1 reaches the costa but also clearly before the middle of cel dm;
costal setulae reaching the apex of R4+5.
Posted by Lukasz Mielczarek on 06-01-2010 13:11
#6
Thanks Paul!
I see it should be D. nebulosa
Greetings,
Lukasz
Edited by Lukasz Mielczarek on 06-01-2010 13:12
Posted by Paul Beuk on 06-01-2010 13:49
#7
I agree.