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Diptera.info :: Identification queries :: Diptera (adults)
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Tachinidae (now identified as Bithia spreta)
Malgo
#1 Print Post
Posted on 22-11-2020 16:43
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This fly was about 8mm and seen on Martin Down, a chalk grassland site in the south of England. The bristly abdomen suggests a Tachinid but vein M curves gently rather than bending sharply. Any help in identifying it would be appreciated.
Malgo attached the following image:


[146.53Kb]
Edited by Malgo on 22-11-2020 17:34
 
Malgo
#2 Print Post
Posted on 22-11-2020 16:45
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Adding photo
Malgo attached the following image:


[143.72Kb]
Edited by Malgo on 22-11-2020 16:52
 
Malgo
#3 Print Post
Posted on 22-11-2020 16:48
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Adding photo
Malgo attached the following image:


[131.2Kb]
Edited by Malgo on 22-11-2020 16:52
 
Malgo
#4 Print Post
Posted on 22-11-2020 16:53
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Fourth photo
Malgo attached the following image:


[134.77Kb]
 
Zeegers
#5 Print Post
Posted on 22-11-2020 17:01
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Location: Soest, NL
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A Bithia spreta, a chalky species indeed.
While Sarcophagidae always has a angular bend in vein, several Tachinidae do not: all the tribe Blondeliini, many Leskiini (amongst which Bithia) and no doubt others.

Theo
 
Malgo
#6 Print Post
Posted on 22-11-2020 17:33
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Many thanks for the quick identification. This species does not show up on most sites featuring Tachinids so it is not surprising I couldn't id it. Even this site only has photos identified as Bithia sp.

Malcolm
 
Zeegers
#7 Print Post
Posted on 22-11-2020 19:14
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Location: Soest, NL
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Many Bithia are very difficult to separate, but spreta is a kind of "Eriothrix light" if you get my meaning: small red lateral spots on tergites.
It is definitely uncommon, but well known from southern England.


Theo
 
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