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 cf Fucellia larva wet beach Ameland => Fucellia fucorum
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| atylotus |
Posted on 03-10-2011 11:18
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 Member Location: Amsterdam, NL Posts: 1126 Joined: 29.05.09 |
This larva was found on a wet beach on the North Sea coast of the isle of Ameland, The Netherlands on July 12, 2011. At first we thought of the famous beachfly Fucellia maritima, but the anterior spiracles does have more lobes and the mouthparts are also different compared to F. maritima as depicted in Smith (1989, p228, fig.858-862). Does anybody has another suggestion? atylotus attached the following image:  [72.13Kb] Edited by atylotus on 11-10-2011 11:34 |
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| Tony Irwin |
Posted on 03-10-2011 22:18
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 Member Location: Norwich, England Posts: 7222 Joined: 19.11.04 |
Have you considered one of the seaweed-feeding Scathophaga or Ceratinostoma?
Tony ---------- Tony Irwin |
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| atylotus |
Posted on 05-10-2011 10:38
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Member Location: Amsterdam, NL Posts: 1126 Joined: 29.05.09 |
I'm not able to identify this larva to species/genus level for there is a lack of papers on this matter (marine fly larvae) in my library. So Scatophagidae is the lowest level. Thanks for the suggestion. |
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| Tony Irwin |
Posted on 07-10-2011 11:11
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Member Location: Norwich, England Posts: 7222 Joined: 19.11.04 |
Nelson published a paper which might help - Nelson, J.M. 1998 British dung-flies (Dipt., Scathophagidae) associated with stranded seaweed. Entomologist's Monthly Magazine 134:77-84. In it he describes differences between Scathophaga calida, S. litorea and Ceratinstoma ostiorum eggs, larvae and pupae. Let me know if you would like a scanned copy. Tony ---------- Tony Irwin |
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| atylotus |
Posted on 10-10-2011 11:31
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Member Location: Amsterdam, NL Posts: 1126 Joined: 29.05.09 |
Tony thanks for the Nelson paper. It did help we.......in concluding that it was neither of the three species. The anterior spiracles in Scatophagidae larvae I (now) know of, are more or less split into two halves and not as semi-circular at the distal part as in my specimen. So perhaps an Anthomyidae? |
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| Cranefly |
Posted on 10-10-2011 18:38
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Member Location: Shachovskaya Posts: 647 Joined: 17.09.08 |
Ferrar gives several figures of Fucellia larvae. Cephalopharyngeal skeleton resembles much Fucellia fucorum and certainly not of Fucellai tergina, the name of the latter under figures is given with ?. No posterior spiracles in this book. Fucellia fucorum larvae has similar anterior spiracles but instar 2 with 11 lobes and instar 3 with 10 lobes, not 9 as I see here. Nothing more I could discover in that book. And no larval material to compair.  |
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| atylotus |
Posted on 11-10-2011 10:07
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Member Location: Amsterdam, NL Posts: 1126 Joined: 29.05.09 |
There are 2 species of Fucellia known from The Netherlands: F. maritima and....F. fucorum  The latter species had been recorded for the first time for our country from Schiermonnikoog, an Island next to Ameland, were I caught this larva. The number of lobes on the anterior spiracle is (in many larva) a bit variable and I guess it's within the range for this species. edit: unfortunately I do not have this Ferrar-book, just a few copies of some families. Edited by atylotus on 11-10-2011 10:10 |
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| nielsyese |
Posted on 11-10-2011 10:50
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 Member Location: Yerseke, NL Posts: 2348 Joined: 13.02.09 |
Fucellia tergina is to be expected for the Netherlands too. The other two species are very common along the Dutch coast. |
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| Cranefly |
Posted on 11-10-2011 11:21
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Member Location: Shachovskaya Posts: 647 Joined: 17.09.08 |
If we are to choose somebody from these 3 species - then Fucellia fucorum is most probable |
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| atylotus |
Posted on 11-10-2011 11:31
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Member Location: Amsterdam, NL Posts: 1126 Joined: 29.05.09 |
That is my conclusion too Thanks to all of you. |
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