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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Ants, Bees and Stinging Wasps » Vespoidea » Vespidae » Pollen Wasps (Masarinae) » Pseudomasaris » Pseudomasaris basirufus
Photo#1195205
Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - male
Copyright © 2016 Aaron Schusteff

Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - Male
In dead-end box-canyon east of Badwater Road, a few miles north of Mormon Point, Death Valley National Park, Inyo County, California, USA
February 14, 2016
Full-dorsal shot, showing antenna more clearly than any other shot I got.

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Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - male Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - male Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - male Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - male
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Contributed by Aaron Schusteff on 1 March, 2016 - 4:55pm

Again, great catch, Aaron!
Distance between eyes on the vertex is a reliable character to distinguish males of basirufus from maculifrons males. This one is obviously basirufus with the distance about three ocellar diameters. Much narrower in maculifrons, barely one ocellar diameter.
I'm just sorry I wasn't there.
… Hartmut Wisch, 1 March, 2016 - 6:25pm login or register to post comments

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