Thorax, propodeal pit, shape

Circular or raindrop shaped depression

© Photographer/source
Osmia male proppit circletear
JP80346_01

Note that the propodeal pit is located at the base of the propodeum, just above where the abdomen attaches to the thorax. Because of its location, it will likely be hidden if the abdomen is bent upwards.

Oval shaped depression, ends broadly rounded like an egg

© Photographer/source
Osmia male proppit broadoval
JP80346_00


© Copyright source/photographer
Osmia bucephala, Male 155919 propodeal pit
I_SD10613

Oval shaped depression, ends narrowly rounded, like a grain of rice

© Photographer/source
Osmia male proppit narrowoval
JP80346_02


© Copyright Deana Crumbling 2010
Osmia atriventris M 171270, propodeal pit
I_DAC360


© Copyright Deana Crumbling 2010
Osmia atriventris M 171270, propodeal pit alt view
I_DAC361

Parallel sided trench, deep and narrow - Appearing as a slit on the surface

© Photographer/source
Osmia male proppit trench
JP80346_04

Parallel-sided depression, ends blunted, shallow, not a deep trench

© Photographer/source
Osmia male proppit parallel
JP80346_03