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 Large hairy Syrphids: both Criorhina ranunculi? --> confirmed
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| Juergen Peters |
Posted on 17-04-2008 22:25
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 Member Location: northwest Germany Posts: 13910 Joined: 11.09.04 |
Hello! Many Syprhids on the wing today here (northwest Germany), although it was only 10-12 ?C (but mostly sunny). The most spectacular rested on a tree trunk at the forest. At first glance I thought of one of the Bombus pratorum queens taking a break  . Length about 15 mm.A few minutes later I saw another, smaller one with orange haired abdomen end resting on the ground (last picture below). Are both Criorhina ranunculi? Thanks! Large picture (1600x1200, 196 KBytes): http://www.foto-u..._M_big.jpg Wing venation more closely: http://www.foto-u...nation.jpg Juergen Peters attached the following image:  [84.4Kb] Edited by Juergen Peters on 18-04-2008 16:14 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Juergen Peters |
Posted on 17-04-2008 22:26
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Member Location: northwest Germany Posts: 13910 Joined: 11.09.04 |
Second picture.
Juergen Peters attached the following image:  [75.39Kb] Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Juergen Peters |
Posted on 17-04-2008 22:26
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Member Location: northwest Germany Posts: 13910 Joined: 11.09.04 |
Third pic.
Juergen Peters attached the following image:  [83.94Kb] Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Juergen Peters |
Posted on 17-04-2008 22:27
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Member Location: northwest Germany Posts: 13910 Joined: 11.09.04 |
The individual with the orange abdomen.
Juergen Peters attached the following image:  [51.44Kb] Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Dieter |
Posted on 18-04-2008 09:54
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Member Location: Munich, Germany Posts: 114 Joined: 15.04.07 |
Yes, both are Criorhina ranunculi. Different colour forms are common among bumble bee mimics (e.g. Merodon equestris, Volucella bombyans, etc.). Cheers, Dieter |
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| Juergen Peters |
Posted on 18-04-2008 16:14
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Member Location: northwest Germany Posts: 13910 Joined: 11.09.04 |
Dieter wrote: Yes, both are Criorhina ranunculi. Different colour forms are common among bumble bee mimics (e.g. Merodon equestris, Volucella bombyans, etc.). Many thanks for confirmation, Dieter! So no difference in sexes. The only other difference I could see, was the slightly less size of the orange individual. Both males? Or is the white haired one a female? Edited by Juergen Peters on 18-04-2008 16:15 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Dieter |
Posted on 18-04-2008 18:46
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Member Location: Munich, Germany Posts: 114 Joined: 15.04.07 |
All females, check the frons. The size differences are normal intraspecific variation. Cheers, Dieter |
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