Thread subject: Diptera.info :: Which fly? (Palloptera ustulata)
Posted by ebbek on 16-10-2015 18:52
#1
Here is a fly from a gravel pit in south Sweden 7 august. Body length about 4 mm. Thankful for help to ID.
Regards
Krister
Edited by ebbek on 17-10-2015 09:49
Posted by ebbek on 16-10-2015 18:52
#2
Frontal view.
Posted by Tony Irwin on 16-10-2015 21:59
#3
Palloptera ustulata female (Pallopteridae)
Posted by ebbek on 17-10-2015 09:49
#4
Many thanks!
Krister
Posted by Paul Beuk on 17-10-2015 16:19
#5
... or
anderssomi. Still no reliable characters to separate these.
Posted by Tony Irwin on 17-10-2015 18:09
#6
Doesn't the difficulty in separating
ustulata and
anderssoni only apply to individuals without wing-markings (i.e.
anderssoni and teneral
ustulata)? If it has markings then surely it can't be
anderssoni?
Very happy to be corrected .... ;)
Posted by Paul Beuk on 18-10-2015 22:02
#7
I had a nice series of '
ustulata' of the same locality and date, all with a well developed marking in the tip of the wing: 7 males of
ustulata, 7 males of
anderssoni, 7 females... The wing marking itself may display some geeographical variation and perhaps age variation, but it certainly tells you nothing about the species identity in a country like the Netherlands.
Posted by Tony Irwin on 19-10-2015 10:12
#8
Thanks, Paul - I shall re-visit my
ustulata more critically!
Posted by Paul Beuk on 19-10-2015 11:14
#9
You really need to. :)