Thread subject: Diptera.info :: Tachinidae question
Posted by varganimrod on 02-05-2023 18:36
#1
Hello! I caught this fly at night, in Hungary. I keyed it out, and I got Istocheta cinerea/subcinerea. As I read, distinction of these two species is only possible in females. But, how can I identify genders in this genus? I did some pictures about sternites, because this is the only way to distinguish these two species, but I don’t know if this is a male or a female. Could you help me please?
Posted by varganimrod on 02-05-2023 18:36
#2
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Posted by varganimrod on 02-05-2023 18:36
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Posted by varganimrod on 02-05-2023 18:37
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Posted by varganimrod on 02-05-2023 18:37
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Posted by varganimrod on 02-05-2023 18:37
#6
6. About sternites
Posted by varganimrod on 02-05-2023 18:37
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Posted by varganimrod on 02-05-2023 18:38
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Posted by varganimrod on 02-05-2023 18:38
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Posted by varganimrod on 02-05-2023 18:39
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Posted by varganimrod on 02-05-2023 18:39
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Posted by John Carr on 02-05-2023 19:20
#12
I think you have a female
Istocheta cinerea.
According to Wood's review of New World Blondeliini, male
Istocheta lack proclinate orbitals. It is not clear whether his diagnosis is based on all world species or only on the single species found in North America.
Posted by varganimrod on 02-05-2023 19:52
#13
Thank you very much!
Edited by varganimrod on 02-05-2023 19:53
Posted by Zeegers on 03-05-2023 06:52
#14
In any case, it is a female indeed.
Nice work.
Most Istochaeta are active at night, so that figures
Theo
Posted by varganimrod on 03-05-2023 09:03
#15
Thank you!