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Diptera.info :: Identification queries :: Diptera (adults)
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Muscidae ID? -> Thricops nigrifrons
runetk
#1 Print Post
Posted on 18-11-2021 16:42
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Location: Norway - Harstad 68deg North
Posts: 325
Joined: 14.11.18

Is it possible to ID this? [My ref: RTK2020-D243B]
Location: North-Norway - Harstad
Habitat: Near the sea. Size: 7.8mm - Date: 14.07.2020 - collected.
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Edited by runetk on 19-11-2021 10:13
 
runetk
#2 Print Post
Posted on 18-11-2021 16:42
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Location: Norway - Harstad 68deg North
Posts: 325
Joined: 14.11.18

PIC2
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runetk
#3 Print Post
Posted on 18-11-2021 16:43
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Location: Norway - Harstad 68deg North
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Joined: 14.11.18

PIC3
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Nikita Vikhrev
#4 Print Post
Posted on 18-11-2021 19:31
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Location: Moscow, Russia
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female Thricops (nigrifrons/longipes)
Nikita Vikhrev - Zool Museum of Moscow University
 
runetk
#5 Print Post
Posted on 18-11-2021 20:34
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Location: Norway - Harstad 68deg North
Posts: 325
Joined: 14.11.18

Thanks for the determination Nikita TumbsUp,
I checked the Key for Thricops and took some more photos of important sections.
1. Thorax = stripes (indistinct stripes lacking median stripe)
2. arista hair size = with of ant. seg.3
3. abdomen (not complete median stripe)
= T.longipes
Do you agree?

best regards
-Rune
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Nikita Vikhrev
#6 Print Post
Posted on 18-11-2021 21:45
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Rune, to differ females is not an easy task.
I did my best here:
https://ia600502.us.archive.org/26/items/RevisionOfTheKeyCharactersForTheThricopsNigrifronsSpecies-group/788-G-3-layout.pdf
Nikita Vikhrev - Zool Museum of Moscow University
 
runetk
#7 Print Post
Posted on 18-11-2021 23:20
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Location: Norway - Harstad 68deg North
Posts: 325
Joined: 14.11.18

Your ZooKey was enlightening reading, TumbsUp
I used the old key from "E. C. M. D'ASSIS" 1968
So I ended up with the reverse result because of the missprint in the key.
Female scutum in posterior view on my specimen shows (1a) what you describes as a T.nigrifrons.
(no median vitta)
The abdomen and arista characters are unreliable as you describe it. :-)
p 11:Female: Hind tibia t3 with only 2 ad seta (check.. se picture)
p 12: Female dusting on thorax ground color yellow with brown tint (check)

Your (T-nigrifrons species-group) female key:
1-2
2-T.nigrifrons
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Nikita Vikhrev
#8 Print Post
Posted on 19-11-2021 08:24
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I think so
Nikita Vikhrev - Zool Museum of Moscow University
 
runetk
#9 Print Post
Posted on 19-11-2021 08:44
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Location: Norway - Harstad 68deg North
Posts: 325
Joined: 14.11.18

TumbsUp
Best regards
Rune
 
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