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Diptera.info :: Identification queries :: Diptera (adults)
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which Chamaepsila? -> Ch. rosae/nigricornis
Carnifex
#1 Print Post
Posted on 08-05-2018 05:41
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Location: Vienna, Austria
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 Hi,

according to fauna-eu, the only species occurring in Austria is Ch. bicolor.
Can the species be confirmed?

Vienna, 7.5.18

Best,
Lorin
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Edited by Carnifex on 04-06-2018 11:35
 
Carnifex
#2 Print Post
Posted on 08-05-2018 05:42
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 .
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Carnifex
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Posted on 08-05-2018 05:42
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 ..
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Tony Irwin
#4 Print Post
Posted on 08-05-2018 08:09
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 rosae/nigricornis
Edited by Tony Irwin on 08-05-2018 08:09
Tony
----------
Tony Irwin
 
Carnifex
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Posted on 08-05-2018 14:55
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 Tony, thank you for the determination.

According to Willi HENNIG (1941), Ch. rosae is distinguished by Ch. nigricornis by a yellow coloration of the 3rd antennal segment. In my specimen, the antenna is completely black.
Does this feature still hold true nowadays? Because from what I read, only males can be separated.
 
Tony Irwin
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Posted on 08-05-2018 17:43
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 The antennal colour was shown by Collin to be unreliable. Ch. rosae can have completely black antennae sometimes. There are very minor differences in eye shape and length of hairs, but male genitalia is a far better way of separating them.
Tony
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Tony Irwin
 
Carnifex
#7 Print Post
Posted on 08-05-2018 18:25
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Location: Vienna, Austria
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 Ok, good to know. Thanks again, Tony
 
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