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View Thread :: Identification queries :: Diptera (adults)
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Tachinidae specimen, Sturmia bella
#1 Print Post
Posted on 20-12-2020 14:00

Location: Lincoln UK
Posts: 549
Joined: 07.02.07

Please tell me if this male tachinid can be confirmed as Sturmia bella. If unconfirmed, what are alternatives to help me check? It was swept on 23/8/20 in eastern England (TF115855) at Eleanor and Lynwode Wood, Market Rasen, Lincolnshire, which is a very under-recorded and it seems this would be the first county record. If confirmed, any up-to-date information about its supposed influence on Aglais urticae Small Tortoiseshell butterfly would be much appreciated.


philporter attached the following image:

Edited by philporter on 20-12-2020 21:47
#2 Print Post
Posted on 20-12-2020 17:23

Location: Soest, NL
Posts: 16818
Joined: 21.07.04

Yes, it looks good in this case, though generally speaking a dorsal view would be required as well.
Sturmia is indeed a specialist on Nymphalidae, it occurs mostly kate in the year (august - october).

#3 Print Post
Posted on 20-12-2020 20:42

Location: Lincoln UK
Posts: 549
Joined: 07.02.07

Thank you Theo, would this view be useful?
philporter attached the following image:

#4 Print Post
Posted on 20-12-2020 21:09

Location: Soest, NL
Posts: 16818
Joined: 21.07.04

Yes, this is Sturmia bella.

General advice is try to make the pics as perpendicular as possible, so dead dorsal and dead lateral. That way, subtle proportions can best be assessed.

But no need now, this one is OK. A male.

#5 Print Post
Posted on 20-12-2020 21:42

Location: Lincoln UK
Posts: 549
Joined: 07.02.07

Thanks for your confirmation and advice Theo

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19 January 2022 22:29


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