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Diptera.info :: Identification queries :: Diptera (adults)
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Rhaphium
Nikita Vikhrev
#1 Print Post
Posted on 30-07-2006 09:44
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Location: Moscow, Russia
Posts: 9406
Joined: 24.05.05

Moscow region, 29 july, 4mm.
I've got Rhaphium (Xiphandrium) appendiculatum, but witout anty feeling of bieng sure (at least leg colour isn't completely as duscribed).
I awaited that fly with such Antennae takes 5 min to IDSad
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Nikita Vikhrev - Zool Museum of Moscow University
 
Kahis
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Posted on 30-07-2006 10:56
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Location: Helsinki, Finland
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Rhaphium caliginosum (=zetterstedti Parent)

The cerci are much longer in appendiculatum, almost as long as the group of long yellow hairs. Like this:

www.elisanet.fi/jere.kahanpaa/diptera/rha_append_mgen_ventral.jpg
Kahis
 
www.iki.fi/kahanpaa
Nikita Vikhrev
#3 Print Post
Posted on 30-07-2006 14:41
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Location: Moscow, Russia
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1. Thank you Kahis. Yesterday I was in a very mood, because after taking image of this male Phaphium and than collecting very same fly, I accidently erised all images. Now I can see that with dorsal image it was anyway Rhaphuim sp. without special image of genitalia.
2. In Stakelberg key (next week I'll finaly get new key by Grichanov) - Rh. appendiculatum - arista very short, as on photo, Rh. caliginosum - arista 2/3 as long as 3-d antennal segment. So, as far as I understand now it doesn't much matter at all whether arista short or long.
Nikita
Nikita Vikhrev - Zool Museum of Moscow University
 
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