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The British checklist (Chandler 1998) mentions that most British specimens identified as H. serrata are really captiosa, but both species may occur here. Can anyone send me diagrams of how to distinguish these two, please?

I've seen Ralph Sipple's excellent photo of the terminalia of captiosa. Does it show the important bit?

Thanks in anticipation
John Bratton

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From Gorodkov in Bei-Bienko (1988); 2. H. serrata, 3. H. captiosa.

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Thanks very much. That should do the job.

John

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Would you mind telling me the full reference for Gorodkov in Bei-Bienko (1988), please? The most recent of Bei-Bienko's books I can find in British booksellers is 1980.

Thanks
John

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Gorodkov, K.B., 1988. 80. Family Helomyzidae (Heleomyzidae). In: Keys to the Insect of the European Part of the USSR V. Part Two (G.Y. Bei-Bienko, G.Y., ed.): 510-537. Amerind Publishing, New Dehli, Bombay, Calcutta, New York.

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There is a revision of the genus Heleomyza made by Gorodkov in 1962 where the drawings were originally published !

Spermathecae of both species were presented in Dipteron-Wroclaw (vol_22) at: http://pte.au.poz...vol_22.pdf

Andrzej

EDIT Paul Beuk: added url tags to make the link clickable. ;)

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Thanks very much to you both.

My specimen, from Cwm Idwal, North Wales, March 2009, is a good match to figure 2, serrata.

John Bratton