Diptera.info :: Identification queries :: Diptera (adults)
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 1 mm long Sphaeroceridae, NE HU, Oct > Scuttle Phoridae, Metopina!
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| pwalter |
Posted on 26-10-2009 13:16
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 Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Hi, this weekend I found this small Sphaero (1.2 mm) on housewall. Wing is a bit broken. Can it be IDd?
pwalter attached the following image:  [193.26Kb] Edited by pwalter on 26-10-2009 13:22 |
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| pwalter |
Posted on 26-10-2009 13:17
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
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pwalter attached the following image:  [175.6Kb] |
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| pwalter |
Posted on 26-10-2009 13:18
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
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pwalter attached the following image:  [36.25Kb] Edited by pwalter on 26-10-2009 13:20 |
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| pwalter |
Posted on 26-10-2009 13:21
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
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pwalter attached the following image:  [19.32Kb] |
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| phil withers |
Posted on 26-10-2009 13:21
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Member Location: Lyon, France Posts: 521 Joined: 04.03.08 |
This is a phorid : Metopina |
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| pwalter |
Posted on 26-10-2009 13:23
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Suprising When I take the wing and legs without spikes now I also see it is a Phorid! Thanks! |
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| pwalter |
Posted on 01-11-2009 23:15
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Hi, I made some genitalia fptps, not good sadly. Can someone ID this specimen? It would be really interesting!
pwalter attached the following image:  [82.64Kb] |
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| pwalter |
Posted on 01-11-2009 23:15
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
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pwalter attached the following image:  [75.43Kb] |
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| phil withers |
Posted on 01-11-2009 23:23
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Member Location: Lyon, France Posts: 521 Joined: 04.03.08 |
Genitalia are not helpful with Metopina: you need to mount the abdomen ventral side uppermost, and the hind leg posterior face uppermost. Then I can tell you what species it is...perhaps. |
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| pwalter |
Posted on 01-11-2009 23:27
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Thanks, than there's no chance, The abdomen is quite destroyed...  Maybe next time! |
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| pwalter |
Posted on 07-11-2009 11:38
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
I forgot to ask if this is also true for other Phorids, that male genitalia preparations are not enough? |
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| KWQ |
Posted on 07-11-2009 17:39
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Member Location: Turku, Finland Posts: 208 Joined: 10.12.04 |
In my opinion it really varies with regard to genera, but generally it seems that Phoridae is perhaps the toughest nut to crack of all European fly families. Yet there are some slightly easier genera included like Anevrina, Borophaga, perhaps Diplonevra etc. where not all species require any genital studies. This was my first glimpse of a Metopina! Disney (1983, 1989 etc.) recommends genital-slide technique in families like Megaselia and Phora. Has anyone here tried that method? I find Phora a very difficult genus, no matter in which position you try to place the genitals. As to Megaselia the problem is mainly the huge size of the family, there is such a great amount of undescribed species. I.e. I have heard a rumour that there would be more than 500 Megaselias in Sweden! But you can occasionally spot one or two characteristic ones also in that mega-family. |
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| phil withers |
Posted on 07-11-2009 22:39
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Member Location: Lyon, France Posts: 521 Joined: 04.03.08 |
I routinely slide-mount all Phoridae, and am able to identify 90% of non-Megaselia with confidence (the proportion of Megaselia is more like 9%). It wouldn't surprise me in the least if there were at least that many Megaselia in Sweden; not a country reknowned for phoridologists. As to genitalia mounts, phorids are quite kind in terms of orientation: the abdomen generally lies nicely lateral (as required for all but Metopina); when the genitalia have cleared somewhat, most of the structures are readily visible - Phora is then relatively easy...Relatively. |
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| pwalter |
Posted on 07-11-2009 22:49
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Dear Phil, do You mount the specimen as a whole? |
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| phil withers |
Posted on 08-11-2009 00:57
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Member Location: Lyon, France Posts: 521 Joined: 04.03.08 |
Yes, under two coverslips, one for the genitalia and a wing, the other for the rest (having first separated a hind leg). |
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| pwalter |
Posted on 08-11-2009 10:32
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Thanks for both of You! |
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