Female, head, antennae, flagellomere length | Sex, number of antennal segments | State or province where bee was collected | Subgenera - Gnathopasites vs Micropasites | Thorax, legs, tarsal claw dentation | Thorax, pronotal lobes, integumental coloration

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Number scored for a state is in green.

1. State or province where bee was collected

2AZ    10CA    2NM    2NV    2OR    2UT    2WA   

2. Sex, number of antennal segments

5Female, 12    5Male, 13   

3. Subgenera - Gnathopasites vs Micropasites

4Gnathopasites - First submarginal cell longer than second - Maxillary palp longer, with four free segments - In direct comparison these species are larger, ranging from about 6-8mm in length    6Micropasites - First and second submarginal cells equal in length - Maxillary palp shorter, with only one or two free segments - In direct comparison these species are smaller, usually ranging from about 3-5mm in length   

4. Female, head, antennae, flagellomere length

4First segment about twice as long as second    6First segment usually longer than second segment but clearly not twice as long   

5. Thorax, pronotal lobes, integumental coloration

4Darker, brownish or blackish    6Lighter, reddish or orangish   

6. Thorax, legs, tarsal claw dentation

5All legs have bidentate tarsal claws    5The tarsal claws of the forelegs are bidentate but the tarsal claws of the mid and hind legs are simple