Abdomen, T6, Dark, erect hairs in the center of segment that are clearly taller than the surrounding hairs | Abdomen, Tergites or upper side, Color | Head, Clypeus, Color | Head, Color of Hair - Look closely for dark hairs, especially on vertex | Head, Region between the compound eye and the base of the antenna | Sex, Total number of antennal segments | State or province where bee was collected | Subgenus

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Number scored for a state is in green.

1. State or province where bee was collected    [Explain]

10AL    16CT    13DC    13DE    13FL    16GA    14IL    14IN    14KY    16MA    16MD    16ME    16MI    10MS    16NC    16NH    16NJ    16NY    11New Brunswick    13Nova Scotia    14OH    16Ontario    14PA    1Prince Edward Island    15Quebec    16RI    14SC    14TN    16VA    16VT    16WI    16WV   

2. Sex, Total number of antennal segments

12Female, 12    12Male, 13   



3. Abdomen, Tergites or upper side, Color

6Black with bright yellow or red marks    17Black with off-white or pale yellow marks    5Completely BLACK   

4. Head, Clypeus, Color

280% or more yellow    23All black    4Mix of black and yellow   

5. Head, Region between the compound eye and the base of the antenna

16All black    6Greater than 75% yellow    2Narrow yellow line along edge of eye   

6. Head, Color of Hair - Look closely for dark hairs, especially on vertex

19Light, white to yellow    6Mixed dark and light hairs   

7. Abdomen, T6, Dark, erect hairs in the center of segment that are clearly taller than the surrounding hairs

15Absent    8Present   

8. Subgenus

2Dolichostelis    4Heterostelis    18Stelis