Female, abdomen, T2 and T3, hair density in middle of segment - Be careful, as hair loss here can become misleading | Female, abdomen, integumental color | Female, rear leg, scopa, hair color | Male, S6, shape of the medial emargination - Caution, this is subtle and tricky without comparative material, be very careful with your diagnosis here | Male, abdomen, S2-4, color of the medial patches of short, dense hair | Sex, number of antennal segments | State or province where bee was collected

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Number scored for a state is in green.

1. State or province where bee was collected

2AZ    10CA    4NV   

2. Sex, number of antennal segments

5Female, 12    5Male, 13   

3. Female, abdomen, T2 and T3, hair density in middle of segment - Be careful, as hair loss here can become misleading

2Absent or nearly so, clearly less dense medially than at the sides    3As dense as is seen at the sides   

4. Female, abdomen, integumental color

5Entirely black, without red    2Noticeably reddened at least in part, but sometimes almost entirely so   

5. Female, rear leg, scopa, hair color

4Primarily light, if with any darker hairs then they are almost always limited to the top of the tibia near the basitibial plate    2With significant amounts of both light and dark hairs, usually with the dark hairs near the basitibial plate reaching around the outer face of the tibia   

6. Male, S6, shape of the medial emargination - Caution, this is subtle and tricky without comparative material, be very careful with your diagnosis here

1Roundedly concave for the most part, BUT the middle of the concave area is somewhat flattened with a slightly medial bump which is often hard to see    3Roundedly concave throughout    1With a V-shaped concavity, which comes to a point medially   

7. Male, abdomen, S2-4, color of the medial patches of short, dense hair

2Darker, brownish, sometimes a golden brown color and sometimes much darker    3Lighter, whitish to very slightly off-white