Thread subject: Diptera.info :: Drosophilidae? => Drosophila (unimaculata?)
Posted by sbushes on 29-11-2021 13:35
#1
Shrewsbury 28/11
hiding in leaf litter
didn't fly, preferred to run around hiding
If Drosophilidae, seems to key to Drosophilinae : Scaptodrosophila deflexa perhaps ?
https://sites.google.com/view/mikes-insect-keys/mikes-insect-keys/keys-for-the-identification-of-british-true-flies-diptera/keys-for-the-identification-of-british-drosophilidae
Edited by sbushes on 29-11-2021 18:05
Posted by sbushes on 29-11-2021 13:36
#2
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Posted by sbushes on 29-11-2021 13:36
#3
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Posted by sbushes on 29-11-2021 13:37
#4
wing
Posted by sbushes on 29-11-2021 13:37
#5
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Posted by sbushes on 29-11-2021 13:39
#6
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Edited by sbushes on 29-11-2021 13:45
Posted by Jan Maca on 29-11-2021 17:29
#8
Difficult; oviprovector seems to be invaginated. Costal index is very high -about 4, so that I think it could be D. unimaculata.
Posted by sbushes on 29-11-2021 18:07
#9
Ok thanks Jan!
Is there anything further I should capture which might help resolve?
Or just a difficult one regardless of angle?
(still have the fly atm)
Edited by sbushes on 29-11-2021 18:07
Posted by Carnifex on 29-11-2021 18:15
#10
I don't see any infuscation in the wing for
D. unimaculata. What about dark female
D. suzukii?
Posted by sbushes on 29-11-2021 19:19
#11
I've noticed my flash has bleached out visible infuscation at times. But on Mike's key the split to go to D.unimaculata vs D.suzuki seems to be 6 vs 8 rows of acrostichal hairs too, which would point more to the latter ?
Note also that the fly is darker to the eye than appears on many images above - thorax and abdomen appeared notably dark grey - closer to the 2nd and 4th image above. The other images are much more bleached / off colour than reality due to my poor photography skills and lack of post-production.
Edited by sbushes on 29-11-2021 19:23
Posted by Jan Maca on 30-11-2021 05:48
#12
I think that the oviprovector is more or less invaginated. White spots between oviscapt and last tergite are likely shines or (in last picture) some dust. Preparation of the abdominal end would decide.
Sometimes it cannot be decided if the number of acrostichals rows is six or eight and this character uses to be omitted from keys.
Conspicuously narrow wings (3rd and 4th picture) with high costal index suggest some Drosophila s.str.
Posted by sbushes on 02-12-2021 17:49
#13
Ok, thanks Jan, good to know