Thread subject: Diptera.info :: Andrena marginata??

Posted by Andre Jas on 22-05-2008 12:21
#1

Hello,

I know Andrena marginata is extinct in Holland, but I found this one in Germany near Nordhorn (1. May 2008) in a piny environment, running on the sand.
I think antennae match, so does abdomen and eyes.
Am I right?

www.ewetel.net/~a.r.jas/diptera/Andrena-cf.-marginata1a.jpg
www.ewetel.net/~a.r.jas/diptera/Andrena-cf.-marginata1b.jpg
www.ewetel.net/~a.r.jas/diptera/Andrena-cf.-marginata1c.jpg
Thanks in advance,

Edited by Andre Jas on 23-05-2008 16:07

Posted by Andre Jas on 22-05-2008 12:23
#2

2

Posted by Christian Schmid-Egger on 23-05-2008 13:24
#3

Without a photo is a diagnosis difficult. Antennae are not suited for Andrena ID, and A. marginata can be confused with other species or genera, depending of your level of bee knowledge. The species is really rare.

Regards, Christian

Posted by Andre Jas on 23-05-2008 16:07
#4

I put external images in now, ?os I couldn't get them uploaded to diptera.info?

Posted by Christian Schmid-Egger on 23-05-2008 16:52
#5

Ok, now I see some photos. You found a Sphecodes spec. (species ID not possible).

Regards, Christian

Posted by Andre Jas on 23-05-2008 17:50
#6

Hello Christian,

I see Sphecodes species have various forms of antennae? Is that correct? I'll put it down as Sphecodes sp.

Vielen Dank,

Posted by cthirion on 23-05-2008 18:14
#7

Ouf, you worried me Christian :D!

Posted by Christian Schmid-Egger on 23-05-2008 20:30
#8

Hi Andr?,
what do you mean with antennae? I see three Sphecodes females (or the same specimen) with exact the same antennae. Males have different antennae, compared with females, but otherwise they are more or less similar. For species ID with a microscope, you may use some antennal characters both in Spheodes males as in Andrena.

Regards, Christian

Posted by Andre Jas on 25-05-2008 22:55
#9

Hi Christian,

It's indeed one and the same spec. What I meant is that I didn't know that male and females have different shaped antennae. Now the picture is clear to me.
Thanks a lot:)