Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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 Two aquatic larvae
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| actinophrys |
Posted on 26-06-2025 23:20
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Member Location: Posts: 3 Joined: 04.06.25 |
Hello all. I was going through some old microscope photos and there were two fly larvae I thought I could use some help with. Both are from Alberta, Canada. The first is about 3½ mm long from a shallow marshy spot. I am guessing it is a limoniid but I am not familiar enough with them to be sure I haven't misinterpreted the lobes at the posterior.
actinophrys attached the following image:  [96.47Kb] |
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| actinophrys |
Posted on 26-06-2025 23:25
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Member Location: Posts: 3 Joined: 04.06.25 |
The second one is about the same size, from near a stand of cattails in a stormwater pond. This one doesn't seem to have a head capsule and my best guess is it might be a sciomyzid, but I couldn't find any that looked similar enough to have much confidence in that.
actinophrys attached the following image:  [98.23Kb] |
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| atylotus |
Posted on 28-06-2025 13:36
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 Member Location: Amsterdam, NL Posts: 1173 Joined: 29.05.09 |
The first one is either Limoniidae or Tipulidae. This depends on how many lobes it has : 5 in Limoniidae and 6 in Tipulidae. However, It looks close to Tipula sp. The second is definitely a Sciomyidae and it looks very similar to genus Elgiva sp. I have seen in Europe. |
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| actinophrys |
Posted on 28-06-2025 20:36
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Member Location: Posts: 3 Joined: 04.06.25 |
Thank you so much! I take it then that there isn't enough to say which family the first one is? Unfortunately this is the best look at the posterior I was able to get; you can see the bundles of setae all the way around but only four lobes seem plain to me, unless the little projection on the top left is one. |
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| atylotus |
Posted on 29-06-2025 15:35
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Member Location: Amsterdam, NL Posts: 1173 Joined: 29.05.09 |
I have cropped, rotated 180 and tried to enhance the anal lobes and I think it is Limoniidae. There are 2 lateral and 2 ventral lobes and I think I can see only 1, unpigmented, dorsal lobe and not 2, pigmented, as in Tipulidae.
atylotus attached the following image:  [64.15Kb] Edited by atylotus on 29-06-2025 15:44 |
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