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Diptera.info :: Identification queries :: Diptera (adults)
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Coenosia from Mojave Desert? --> likely C. humilis
kschnei1000
#1 Print Post
Posted on 02-03-2021 05:11
Member

Location: California, USA
Posts: 58
Joined: 26.01.21

 I collected this little 3.5 mm muscid at a small city park in the Mojave Desert (Baker, California). It seems to key to Coenosia (Coenosia) in Huckett 1975? The femora appear all dark, so maybe C. humilis? Thanks for any help you can provide!

Best wishes,
Ken
Edited by kschnei1000 on 02-03-2021 15:13
 
kschnei1000
#2 Print Post
Posted on 02-03-2021 05:12
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Location: California, USA
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 Live image.
kschnei1000 attached the following image:


[43.63Kb]
Edited by kschnei1000 on 02-03-2021 05:15
 
kschnei1000
#3 Print Post
Posted on 02-03-2021 05:17
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 Wing.
kschnei1000 attached the following image:


[37.69Kb]
 
kschnei1000
#4 Print Post
Posted on 02-03-2021 05:18
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 Habitus lateral.
kschnei1000 attached the following image:


[34.56Kb]
 
kschnei1000
#5 Print Post
Posted on 02-03-2021 05:18
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 Dorsal thorax.
kschnei1000 attached the following image:


[43.51Kb]
 
kschnei1000
#6 Print Post
Posted on 02-03-2021 05:19
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 Face.
kschnei1000 attached the following image:


[37.14Kb]
Edited by kschnei1000 on 02-03-2021 05:20
 
kschnei1000
#7 Print Post
Posted on 02-03-2021 05:21
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 Hind tibia with two closely related mid-length bristles.
kschnei1000 attached the following image:


[31.54Kb]
 
kschnei1000
#8 Print Post
Posted on 02-03-2021 05:22
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 Posterior view of hind legs.
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[30.53Kb]
 
kschnei1000
#9 Print Post
Posted on 02-03-2021 05:22
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 Fore tibia.
kschnei1000 attached the following image:


[25.76Kb]
 
Nikita Vikhrev
#10 Print Post
Posted on 02-03-2021 10:41
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 I agree that by Huckett it runs to C. humilis.
Nikita Vikhrev - Zool Museum of Moscow University
 
kschnei1000
#11 Print Post
Posted on 02-03-2021 15:25
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Location: California, USA
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Nikita Vikhrev wrote:
I agree that by Huckett it runs to C. humilis.


Thanks very much, Nikita!

Obviously Huckett is pretty dated and we could have other introduced species here in California now. Is there anything else I can do to confirm the species ID? Also, this has to be a female with that telescoped ovipositor-looking structure at the tip of the abdomen, right?

Thanks again,
Ken
 
Nikita Vikhrev
#12 Print Post
Posted on 02-03-2021 18:36
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 Ken, of course, it is not a Huckett's problem, but a global one. Entomology (or Dipterology) started 200 years ago as science with the centre in Europe. Presently dipterology has a sad trend to divide onto European one; N American one; Chinese one; S American dipterology is coming.
There is even trend that Malaysian (or Australian, or Namibian) material has to be investigated by Malaysian (or ... ) dipterologysts. These trends lead dipterology to a chaotic state, alas.
What can we do? I'm sure that mass exchange of, for example, Palaearctic and Nearctic material is badly need. If you can compare Palaearctic C. humilis with your Californian specimen (yes, female), you can come to conclusion is it C. humilis or something else.
Moscow Zoological museum generally and I personally are ready to such exchange with you or any other person or collection.
Nikita Vikhrev - Zool Museum of Moscow University
 
kschnei1000
#13 Print Post
Posted on 02-03-2021 18:46
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Location: California, USA
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Nikita Vikhrev wrote:
Ken, of course, it is not a Huckett's problem, but a global one. Entomology (or Dipterology) started 200 years ago as science with the centre in Europe. Presently dipterology has a sad trend to divide onto European one; N American one; Chinese one; S American dipterology is coming.
There is even trend that Malaysian (or Australian, or Namibian) material has to be investigated by Malaysian (or ... ) dipterologysts. These trends lead dipterology to a chaotic state, alas.
What can we do? I'm sure that mass exchange of, for example, Palaearctic and Nearctic material is badly need. If you can compare Palaearctic C. humilis with your Californian specimen (yes, female), you can come to conclusion is it C. humilis or something else.
Moscow Zoological museum generally and I personally are ready to such exchange with you or any other person or collection.


Thanks Nikita, I understand - very frustrating. I will see if California Academy of Sciences has any C. humilis specimens. And if I can collect duplicates and build up a small collection of California muscids for you, I would be happy to send them your way... Smile

Best,
Ken
 
Nikita Vikhrev
#14 Print Post
Posted on 02-03-2021 19:50
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 I doubt that there is European C. humilis in California Academy of Sciences. Otherwise we come back to trust Huckett or not.
Ken, I'm ready to send a box with material from Russia to Californian Academy of Sciences first. When they got my material they can send Califirnian to Moscow.
Nikita Vikhrev - Zool Museum of Moscow University
 
kschnei1000
#15 Print Post
Posted on 02-03-2021 20:49
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Location: California, USA
Posts: 58
Joined: 26.01.21
Nikita Vikhrev wrote:
I doubt that there is European C. humilis in California Academy of Sciences. Otherwise we come back to trust Huckett or not.
Ken, I'm ready to send a box with material from Russia to Californian Academy of Sciences first. When they got my material they can send Califirnian to Moscow.


That sounds great! If you can share your email address with me privately (I am at kschnei1000 (at) gmail.com), I can put you in touch with the collections manager and you can let him know what you'd like to borrow from the CAS collection and what you are sending.

Best,
Ken
 
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