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Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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pupae 8 mm under bark
cebe
#1 Print Post
Posted on 19-02-2011 17:46
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Found those pupae under wet bark in Brussels. Diptera?

http://bru.observ...w/52379534
bru.observations.be/fotonew/5/1856395.jpg
bru.observations.be/fotonew/1/1856391.jpg
bru.observations.be/fotonew/2/1856392.jpg

thanks,
Bart
Edited by cebe on 19-02-2011 17:50
 
www.cebe.be/i
atylotus
#2 Print Post
Posted on 20-02-2011 12:58
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Location: Amsterdam, NL
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Xylomyidae, and most likely Solva marginata. The larva looks a bit like a Stratiomyidae, but has a different cuticular pattern, a differently shaped analsegment, rows of tooth like tubercles at the anterior part of some abdominal segments, but most obviously a shiny bright yellow pro- and mesothorax. Another typical feature (not seen on the photo) is the toothed anus. I guess this must be S.marginata, for the other species of Xylomyidae (Solva and Xylomya) do not occur in Belgium (www.faunaeur.org), but you have to ask that a specialist on this matter. See also the breeding effort of a Czech specimen by Miroslav (http://www.dipter...d_id=34921).
Edited by atylotus on 20-02-2011 13:05
 
cebe
#3 Print Post
Posted on 21-02-2011 13:24
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thanks,
had those adults before... An interesting English abstract in http://www.naturvardsverket.se/Documents/publikationer/620-5759-6.pdf suggests a link with the Dutch Elm-Didease who creates this kind of habitats we also have here...
Bart
Edited by cebe on 21-02-2011 13:26
 
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