Thread subject: Diptera.info :: Sarcophagidae ? => Tachinidae: Istocheta longicornis
Posted by skrylten on 10-11-2012 16:07
#1
2012-06-30, Skåne Sweden, 9 mm
Edited by skrylten on 12-11-2012 19:24
Posted by skrylten on 10-11-2012 16:08
#2
2:nd image
Posted by ChrisR on 10-11-2012 16:13
#3
Tachinidae :)
Posted by skrylten on 10-11-2012 16:15
#4
Thats more interesting Chris ;)
Can I take other images to get further ?
Posted by sd on 10-11-2012 21:40
#5
Maybe
Istocheta?
Steve
Posted by skrylten on 10-11-2012 21:43
#6
Arrived at Istocheta in the key at the same time you wrote it :)
Posted by skrylten on 11-11-2012 09:44
#7
We only have Istocheta longicornis listed in Sweden.
I will try to take all the photos necessary (if possible) to confirm that ID.
I'll be back later ...
Posted by skrylten on 11-11-2012 14:33
#8
Following "Die Raupenfliegen Mitteleuropas:"
First sternopleural bristles...
Posted by skrylten on 11-11-2012 14:34
#9
... and "swollen" sub-scutellum => Tachinidae
Posted by skrylten on 11-11-2012 14:35
#10
1: 3 ia => 2
Posted by skrylten on 11-11-2012 14:37
#11
2: Bare arista => 19
Posted by skrylten on 11-11-2012 14:42
#12
19: m-cu almost right-angled, no small bristles on R4+5 => 25
Posted by skrylten on 11-11-2012 14:44
#13
25: m-vein bent (see image above) => 30
Posted by skrylten on 11-11-2012 14:46
#14
30: Cell R5 open (see image above) => 56
Posted by skrylten on 11-11-2012 14:48
#15
56: Other combinations ... => 63
Posted by skrylten on 11-11-2012 14:51
#16
63: Brigth hairs on the lower back of head => 76
Posted by skrylten on 11-11-2012 14:54
#17
76: Some hairs as in abb. 8 (see image above) => 77
77: Once again as in abb.8 (see image above) => 78
78: As in abb.8 and eyes with some hairs (see image above)
=> Istocheta !!!
Edited by skrylten on 11-11-2012 14:57
Posted by skrylten on 11-11-2012 15:05
#18
Istocheta key:
1: Arista thickened to more than half its length => 2
2: Arista thickened to ca 2/3 the length. Distance between subapical bristles almost the same as between basal bristle and subapical bristle (see image above) => 3
Posted by skrylten on 11-11-2012 15:12
#19
3: "Wangen" narrower than half the eye-diameter (see image above).
Scutellum with hairlike apical bristles (see image above).
Abdomen with discal bristles.
===> longicornis
Please comment if it seems a correct ID !
Edited by skrylten on 11-11-2012 15:13
Posted by Zeegers on 11-11-2012 18:52
#20
It is definitely Istochaeta and it looks like longicornis indeed.
Supposed to be nocturnal.
How did you get it ??
Theo
Posted by skrylten on 11-11-2012 19:25
#21
Hi Theo !
I caught it in a meadow at daytime, with a net, in a steep valley with beechforest on sandy, calcerous soil.
Normally very hot and dry at the top of the valley, and mor damp and dark at the bottom.
I think I caught it in a meadow at the bottom of the valley.
Is the correct spelling Istocheta or Istochaeta ?
/Leif
Edited by skrylten on 11-11-2012 19:27
Posted by sd on 12-11-2012 07:38
#22
Well done, great photos, properly keyed - and only one other
Istocheta specimen posted on Diptera.info:)
Steve
Posted by skrylten on 12-11-2012 19:13
#23
Thanks Steve !
I will add photos to the gallery.
There was another record of I. longicornis, 20 km from this site, 3 years ago. Also on dry, sandy meadow, at a golf course, and at daytime.
Posted by Zeegers on 12-11-2012 21:55
#24
According to the nomenclatoral police, it is Istocheta.
According to me and all other people who enjoyed Gymnasium, it is Istochaeta.
Thanks for the info !
Theo