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 Another Ctenophora/Tanyptera-like cranefly
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| Jan Zwaaneveld |
Posted on 26-12-2006 14:13
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Member Location: Leerdam, Netherlands Posts: 721 Joined: 20.02.06 |
I found another one in my photo-archives, photographed on 6th September at Leerdam, Netherlands. Obviously a male this time, could this perhaps be the male of T. nigricornis? Unfortunately the photos are of rather poor quality. Thanks in advance. Jan Zwaaneveld attached the following image:  [68.98Kb] Edited by Jan Zwaaneveld on 26-12-2006 14:14 http://slamenietd...web-log.nl |
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| Jan Zwaaneveld |
Posted on 26-12-2006 14:15
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Member Location: Leerdam, Netherlands Posts: 721 Joined: 20.02.06 |
pic 2
Jan Zwaaneveld attached the following image:  [53.89Kb] http://slamenietd...web-log.nl |
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| kitenet |
Posted on 26-12-2006 16:48
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 Member Location: Buckinghamshire, UK Posts: 118 Joined: 04.05.06 |
As far as I can see the trochanters are orange (not black), which should make this a male of T. atrata. Lovely to see all these big craneflies  !Martin Martin Harvey |
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| Jan Zwaaneveld |
Posted on 26-12-2006 18:19
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Member Location: Leerdam, Netherlands Posts: 721 Joined: 20.02.06 |
O.k., thanks for your help, Martin! Yes, they are beautiful creatures, aren't they? http://slamenietd...web-log.nl |
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| Louis Boumans |
Posted on 26-12-2006 18:38
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Member Location: NO Oslo Posts: 262 Joined: 09.06.04 |
Oosterbroek et al.'s key works also with these pictures: only 2 species have a stigmatic + an apical wing spot, i.e. Dictenidia bimaculata and Ctenophora nigriceps. The latter is not known from the NL, only from Sweden, so this must be D. bimaculata, which is also "the most widespread"and "relatively frequently encountered". Also this species has 2 appendages on each antennal segment, against 4 in Ctenophora. Difficult to see in these pictures, but maybe this becomes visible if you enlarge the antenna in your picture.. |
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| Jan Zwaaneveld |
Posted on 26-12-2006 19:28
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Member Location: Leerdam, Netherlands Posts: 721 Joined: 20.02.06 |
I already wondered about the wing spots, but I could not find a reasonable alternative. I really should get that key. I'll see if I can enlarge the antennae, but I'm afraid the photos become really hazy then (these are already cropped). Thanks, Louis! http://slamenietd...web-log.nl |
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| Jan Zwaaneveld |
Posted on 26-12-2006 20:50
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Member Location: Leerdam, Netherlands Posts: 721 Joined: 20.02.06 |
Two enlargements of the antennae. Nr. 1 Jan Zwaaneveld attached the following image:  [87Kb] Edited by Jan Zwaaneveld on 26-12-2006 20:51 http://slamenietd...web-log.nl |
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| Jan Zwaaneveld |
Posted on 26-12-2006 20:51
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Member Location: Leerdam, Netherlands Posts: 721 Joined: 20.02.06 |
Nr. 2
Jan Zwaaneveld attached the following image:  [68.82Kb] http://slamenietd...web-log.nl |
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| kitenet |
Posted on 26-12-2006 23:04
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Member Location: Buckinghamshire, UK Posts: 118 Joined: 04.05.06 |
Whoops, my turn to apologise for confusing things, I had forgotten about Dictenidia  . Agree that this is bimaculata.Martin Martin Harvey |
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| Jan Zwaaneveld |
Posted on 27-12-2006 12:06
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Member Location: Leerdam, Netherlands Posts: 721 Joined: 20.02.06 |
O.k. Martin, then bimaculata it is Thanks for confirmation!
http://slamenietd...web-log.nl |
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but don't see the image in the post.