Diptera.info :: Identification queries :: Diptera (adults)
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 Sciaridae (Malaysia)
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| u_loji |
Posted on 12-11-2013 03:19
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Member Location: Posts: 26 Joined: 09.06.10 |
Just caught a lot of these things in a Malaise trap. I keyed it as a Ceratopogonidae. Am I right and does anybody know what it is?
Edited by u_loji on 12-11-2013 06:26 Goh, T.G. Museum of Zoology, University of Malaya |
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| John Carr |
Posted on 12-11-2013 04:14
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 Member Location: Massachusetts, USA Posts: 9855 Joined: 22.10.10 |
Sciaridae male, a fungus gnat. I don't know what key you used. Here are some differences between families. Flagellomeres of Sciaridae are broad cylinders commonly 2-3 times longer than wide. Flagellomeres of Ceratopogonidae are narrower, commonly round near base of antenna, and the last 3-5 are usually longer. Most Sciaroidea have long coxae on all legs and clearly visible tibial spurs as long as diameter of tibia (Sciaridae) to much longer (Mycetophilinae). Ceratopogonidae have shorter coxae, lack distinct tibial spurs visible in photos, and in many genera have visible claws. In Sciaridae Cu is forked near base of wing and M meets R near base of wing. In Ceratopogonidae Cu is forked and M meets R near midwing. |
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| u_loji |
Posted on 12-11-2013 06:34
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Member Location: Posts: 26 Joined: 09.06.10 |
Thanks for the help. I'm using a provisional illustrated key, I don't think it was ever published. What key would be best to use for identifying Nematocerans to family level? Based on the characters you listed, I'm guessing that these are also Sciaridae?  
Goh, T.G. Museum of Zoology, University of Malaya |
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| Paul Beuk |
Posted on 12-11-2013 10:47
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 Super Administrator Location: Netherlands Posts: 19239 Joined: 11.05.04 |
The top one certainly is Keroplatidae, the bottom one probably (but wing venation is not visible).
Paul - - - - Paul Beuk on https://diptera.info |
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| John Carr |
Posted on 12-11-2013 15:18
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Member Location: Massachusetts, USA Posts: 9855 Joined: 22.10.10 |
The wing of the top one looks like Mycetophilidae near Leia and Greenomyia. The bottom looks like Keroplatidae, Orfeliini from the side. |
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| Paul Beuk |
Posted on 12-11-2013 16:14
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Super Administrator Location: Netherlands Posts: 19239 Joined: 11.05.04 |
Oh dear, messing names up. Silly sod I am.
Paul - - - - Paul Beuk on https://diptera.info |
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| Jan |
Posted on 23-06-2014 23:02
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Member Location: Posts: 154 Joined: 11.02.08 |
From top to bottom: 1. Nepaletricha sp. (a very rare genus of Sciaroidea incertae sedis), it must have been collected in mountains of northern Thailand. 2. Clastobasis sp., female (Mycetophilidae: Leiini) 3. Allactoneura sp., male (Mycetophilidae: Leiini). |
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| Jan |
Posted on 24-06-2014 08:48
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Member Location: Posts: 154 Joined: 11.02.08 |
Concerning 1, if it is from Malaysia, then it must be a male of Sciaridae, not Nepaletricha, but it is difficult to recognize from the photo. |
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but don't see the image in the post.
