Diptera.info :: Identification queries :: Other insects, spiders, etc.
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 white egg cluster, 2015-09-06 > probably Gastropoda
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| Lennart Bendixen |
Posted on 10-11-2015 21:27
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Member Location: Northern Germany Posts: 1171 Joined: 19.12.14 |
Hi, who's able to tell me, what I've found here? I already asked someone who's familiar with Trichoptera, because I thought this could be Trichoptera eggs, but he wasn't sure about that. Size about 5 x 9 mm. I discovered it on a wet, shady and mossy place, about 5 m away from a pond. I'm curious about your answers - thanks in advance! Lennart 2015-09-16, Northern Germany, S-H, Mohrkirch, fallow land Lennart Bendixen attached the following image:  [199.54Kb] Edited by Lennart Bendixen on 13-11-2015 00:25 |
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| solito de solis |
Posted on 11-11-2015 21:30
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 Member Location: Liege, Belgium Posts: 404 Joined: 05.08.13 |
HI by experience and with the infos given, it seems to me a Physa acuta egg mass Physa acuta is an aquatic mollusk gastropod SDS you could see here the cycle of Physa and the egg cluster on minute 11:00 YouTube Video Edited by solito de solis on 11-11-2015 22:16 |
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| Lennart Bendixen |
Posted on 11-11-2015 22:16
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Member Location: Northern Germany Posts: 1171 Joined: 19.12.14 |
Wow, amazing film! If only my french was a bit better... Sorry, I missed to say there's no real wet connection between the pond and the place I found the object. They're separated by a small (and dry) path. So an aquatic gastropod would be unlikely, I think. Nevertheless it looks quite similar to the white thing, that Tony identified as slug eggs here: http://www.diptera.info/forum/viewthread.php?thread_id=69355 But I really wonder which kind of (non-aquatic) snail or slug produces such an egg cluster. I can only find pictures of eggs, which are separated from each other. This isn't a distinctive character of aquatic gastropods, is it? |
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| solito de solis |
Posted on 11-11-2015 23:06
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Member Location: Liege, Belgium Posts: 404 Joined: 05.08.13 |
Sorry, I was close ... I have been guided by the size and the image of wet moss, where the egg mass is located So far from the pond would be impossible, and after all Physa acuta need very clean water I believe that number of eggs/cluster depends on genus and on living conditions for aquatic snails. We could say that they are characteristics but by experience I often see variations in the number of eggs in a cluster but rarely variations for the size of the eggs. I don't know for non aquatic organisms. SDS |
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but don't see the image in the post.
