Diptera.info :: Identification queries :: Diptera (adults)
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 Which Eristalis ?
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| BubikolRamios |
Posted on 25-11-2009 11:12
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Member Location: Slovenia Posts: 1723 Joined: 14.06.09 |
15.06.2008, body size 15 mm I belive this(eristalis pertinax):  differs from the one in question -->rear end pattern, or this is gender thing? BubikolRamios attached the following image:  [98.36Kb] Edited by BubikolRamios on 25-11-2009 11:21 |
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| BubikolRamios |
Posted on 26-11-2009 05:55
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Member Location: Slovenia Posts: 1723 Joined: 14.06.09 |
probably this is Eristalis tenax : http://upload.wik...rigold.jpg Edited by BubikolRamios on 26-11-2009 05:57 |
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| Andre |
Posted on 26-11-2009 11:41
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 Member Location: Tilburg, the Netherlands Posts: 2111 Joined: 18.07.04 |
Indeed, all three are tenax. Unique for pertinax is, in having the front and middle tarsae all yellow. So this is not pertinax. Unique for tenax are the two 'bands' of hairs running over the eyes vertically. In fact, they are two areas where the hairs grow a lot closer to eachother than on the rest of the eyesurface. Sometimes it can be less clear to see, but in many cases it's easy. The abdomen of tenax can be with large reddish-yellow spots, to almost completely dark. The extension of these markings is usually (but not always) larger (reaching tergite 3) in the males, like you can see on your pictures.
Edited by Andre on 26-11-2009 11:44 |
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| Andre |
Posted on 26-11-2009 11:42
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Member Location: Tilburg, the Netherlands Posts: 2111 Joined: 18.07.04 |
PS: for Syrphidae we a separate forum  |
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