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Diptera.info :: Identification queries :: Diptera (adults)
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Trixa pauciseta (Tachinidae) female
sd
#1 Print Post
Posted on 16-05-2022 12:08
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Location: Suffolk, UK
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Joined: 11.10.07

Trixa pauciseta (Tachinidae) female
France, Haute-Pyrenees, Luz Saint-Sauveur
5th June 2014. Altitude 1 000m

Another specimen recently degreased (Dexiinae seem to be most prone out of the Tachinidae to suffer this) so the bronze tint is rather artificial. Individuals were sitting on bramble leaves (Rubus) in thick vegetation with grubbed patches of soil due to wild boar, in cool, overcast weather.

T. pauciseta is close to T. caerulescens, but has fewer median bristles and also has a differentiated vibrissa and hairs on the prosternum. I think it is solely restricted to the Pyrenees?

Steve

(See "A revision of the genus Trixa Meigen (Diptera: Tachinidae)"
Zhang and Shima, Insect Science (2005) 12, 57-71)
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sd
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sd
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sd
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Posted on 16-05-2022 12:09
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sd
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sd
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nielsyese
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Posted on 16-05-2022 12:17
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I cannot confirm the ID, but how do you degrease the specimens?
Best wishes, Niels-Jan Dek
 
sd
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Posted on 16-05-2022 12:39
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Hi,
Different organic solvents can be used, eg ethyl acetate. Depending on the specimen size, maybe soak overnight and maybe repeated. The specimen is then more fragile and can become loose on the pin. Take usual precautions with solvents regarding inhalation, fire risk, etc.

Steve
 
sd
#9 Print Post
Posted on 16-05-2022 12:45
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Here is the greasy original...
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Zeegers
#10 Print Post
Posted on 16-05-2022 15:34
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Location: Soest, NL
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Joined: 21.07.04

Trixa is a mess and badly in need of a revision, preferably DNA supported.


Theo
 
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