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Photo#104279
Osmia? - Osmia montana
Copyright © 2007 Hartmut Wisch

Osmia? - Osmia montana
Mill Creek Summit area, ~4970 ft. altitude, San Gabriel Mountains, Los Angeles County, California, USA
April 6, 2007
Size: ~10 mm
In Rhus trilobata (Skunkbrush). I find the large, square head rather striking.

Images of this individual: tag all
Osmia? - Osmia montana Osmia? - Osmia montana Osmia? - Osmia montana
Contributed by Hartmut Wisch on 20 April, 2007 - 1:46pm
Last updated 1 January, 2008 - 4:18pm

Moved
Moved from Osmia montana.
… Beatriz Moisset, 1 January, 2008 - 4:18pm

this is a Cephalosmia, named for its striking head
Cephalosmia is a subgenus of Osmia.

This is Osmia (Cephalosmia) montana quadriceps Cresson, 1878, a common species in California.

The smooth, shining, and concave lower face (including clypeus) and nearly black (not green or blue) integument is typical of O. montana.
… John S. Ascher, 20 April, 2007 - 2:09pm

 
Thanks, John,
for the ID! I've seen this bee before, possibly Mt. Pinos area, might even have some other photos buried in my files.
… Hartmut Wisch, 20 April, 2007 - 2:25pm

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