Diptera.info :: Identification queries :: Diptera (adults)
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 Mycetophilidae - Leia arsona --> Leia/Clastoblasis
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| Auratus |
Posted on 14-06-2013 13:45
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Member Location: Edam - Netherlands Posts: 334 Joined: 24.05.10 |
Caught yesterday (14-6) in the Netherlands. Could this be Leia arsona? Thanks in advance. Auratus attached the following image:  [134.67Kb] Edited by Auratus on 17-06-2013 06:13 Greetings, Jan |
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| Auratus |
Posted on 14-06-2013 13:46
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Member Location: Edam - Netherlands Posts: 334 Joined: 24.05.10 |
Wing
Auratus attached the following image:  [147.1Kb] Greetings, Jan |
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| John Carr |
Posted on 15-06-2013 02:30
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 Member Location: Massachusetts, USA Posts: 10178 Joined: 22.10.10 |
How far are the ocelli from the eye margin? The key to Palaearctic Mycetophilidae says Lateral ocelli touching eye margins. Fork of CuA slightly before apex of Sc ... Clastobasis Skuse Lateral ocelli not touching eye margins. Fork of CuA beyond level of apex of Sc ... Leia Meigen I think your CuA forks before the tip of Sc. If the ocelli are far from eye margins, consider also Greenomyia. |
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| Auratus |
Posted on 15-06-2013 11:14
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Member Location: Edam - Netherlands Posts: 334 Joined: 24.05.10 |
John, Thanks for your reply. I have checked and 1. The lateral ocelli touch the eye margin. 2. CuA does not really fork, CuA1 seems to be a `loose` vein. It starts however just before, or at, the level of apex of Sc. The above leads me to Clastoblasis, of wich only one species is known for the Netherlands (C. alternans). Do you agree? Greetings, Jan |
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| John Carr |
Posted on 15-06-2013 12:12
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Member Location: Massachusetts, USA Posts: 10178 Joined: 22.10.10 |
There is a second species from nearby (C. loici Chandler 2001) but I do not know what either looks like. |
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| empeejay |
Posted on 16-06-2013 08:11
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Member Location: Posts: 234 Joined: 15.05.06 |
Chandler (2001) separates Clastobasis from Leia as follows: - "It agrees with most of the characters listed for Leia, except for vein sc-r (Sc2 in the key) being absent and the wings being clear yellowish without any marking; at least a subapical wing band is usually present in British species of Leia. It also differs in the lateral ocelli being closer to the eye margins and the branches of the median fork at least slightly convergent apically, M, being downturned apically." This look like a typical Leia to me but obviously not arsona. Edited by empeejay on 16-06-2013 08:11 |
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| Auratus |
Posted on 17-06-2013 06:13
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Member Location: Edam - Netherlands Posts: 334 Joined: 24.05.10 |
Thanks Empeejay. This proves again how difficult it is to identify from a photo. As long as i don't have a proper key, i will stick to Leia/Clastoblasis. Greetings, Jan |
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