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Diptera larva?
Ingrid Altmann	#1 Posted on 20-12-2009 15:38
Member Location: Posts: 1018 Joined: 29.11.09	Hi, is this a diptera-larva? I found it under the bark of Sorbus aucuparia. 2009-04-02, Furth im Wald, Bavaria, Germany Greetings Ingrid Ingrid Altmann attached the following image: [70.07Kb]


Ingrid Altmann	#2 Posted on 20-12-2009 15:38
Member Location: Posts: 1018 Joined: 29.11.09	the head Ingrid Altmann attached the following image: [47.12Kb]


atylotus	#3 Posted on 20-12-2009 17:23
Member Location: Amsterdam, NL Posts: 1120 Joined: 29.05.09	Xylophagidae


Cranefly	#4 Posted on 21-12-2009 12:20
Member Location: Shachovskaya Posts: 646 Joined: 17.09.08	I think it is Xylophagus ater Meigen - sclerotized plates are present only on 2 anterior segments, not on 3 segments of thorax. Abdominal segment carry 3? setae, not 4.


Ingrid Altmann	#5 Posted on 21-12-2009 18:58
Member Location: Posts: 1018 Joined: 29.11.09	Thank you very much! Best regards Ingrid


atylotus	#6 Posted on 22-12-2009 10:35
Member Location: Amsterdam, NL Posts: 1120 Joined: 29.05.09	there is a drawing of X. maculata in Smith (1989:p180) were all the thoracic segments have dorsal platelets. So your larvae isn't X. maculata. Edited by atylotus on 22-12-2009 10:59


pwalter	#7 Posted on 22-12-2009 10:48
Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08	Can You submit it to gallery? Really nice photos of a scarce animal!


Ingrid Altmann	#8 Posted on 22-12-2009 18:40
Member Location: Posts: 1018 Joined: 29.11.09	pwalter wrote: Can You submit it to gallery? Yes of course! Thank you very much! Ingrid


Ingrid Altmann	#9 Posted on 24-12-2009 14:03
Member Location: Posts: 1018 Joined: 29.11.09	Hi, sorry, but I just saw, that I bred this larva and so I also have pictures of the imago! Here they are! Regards Ingrid Ingrid Altmann attached the following image: [65.81Kb]


Ingrid Altmann	#10 Posted on 24-12-2009 14:04
Member Location: Posts: 1018 Joined: 29.11.09	2nd image Ingrid Altmann attached the following image: [66.07Kb]


Cranefly	#11 Posted on 27-12-2009 11:19
Member Location: Shachovskaya Posts: 646 Joined: 17.09.08	Dear Ingrid, there is some discussion about the status of 2 Xylophagus species - ater and compeditus. Now the larva looks like ater, and imago - like compeditus. Dr. Bert Viklund from Stockholm Museum Natutal History is an expert in this question. Try to consult him bert.viklund@nrm.se


Ingrid Altmann	#12 Posted on 27-12-2009 18:43
Member Location: Posts: 1018 Joined: 29.11.09	Cranefly wrote: History is an expert in this question. Thank you very much! I�ll contact Mr. Viklund. Regards Ingrid


atylotus	#13 Posted on 23-04-2010 10:24
Member Location: Amsterdam, NL Posts: 1120 Joined: 29.05.09	Looking at the photographs in Stuke (2004: downloadable from http://www.schweb...agidae.pdf) the larva isn't X. ater, but some other species. In the larvae of X. ater the third thoracic segment has a pair of large round sclerotized platelets, while in X. cinctus almost the entire third thoracic segment is sclerotized. Unfortunately it appears as if Stuke synonimize X. ater with X. compeditus. An assumption can me made regading the larva of these German specimens. As Cranefly pointed out, the adults are more like compeditus and the larva resemble that of ater. The larva of these german specimens lack the platelets on the third thoracic segment, so it couldn't be X. ater (refering to Stuke, 2004). So the assumption could be made that in X. compeditus the platelets are missing (in these German specimens), in X. ater they are large (as in the Czech specimens of Miroslav: http://www.dipter...d_id=19769) and in X. cinctus even larger with also a central sclerite.