Female, P. polytrichus vs. P. potentillae vs. P. atramontensis | Female, head, face, distance between eyes vs length | Length of body, measured in mm | Male, P. polytrichus vs. P. potentillae | Male, head, clypeus, color | 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    [Explain]

6AL    4DC    4DE    6FL    6GA    2IL    2IN    4KY    2MA    4MD    2MI    6MS    6NC    4NJ    2NY    4OH    2Ontario    4PA    6SC    4TN    4VA    1VT    4WV   

2. Sex, number of antennal segments

3Female, 12    3Male, 13   



3. Male, head, clypeus, color

1Apical half yellow and basal half black    2Entirely yellow   



4. Length of body, measured in mm    [Explain]

35mm    46mm    47mm    28mm   

5. Male, P. polytrichus vs. P. potentillae

1P. polytrichus - Head, antennae, flagella segment 1, clearly LONGER than flagella segment 2 - Body length, in comparison with P. pontentillae LARGER    1P. potentillae - Head, antennae, flagella segment 1, SHORTER than or at most EQUAL to flagella segment 2 - Body length, in comparison with P. polytrichus much SMALLER   



6. Female, head, face, distance between eyes vs length    [Explain]

1Distance between eyes GREATER than length of face    2Distance between eyes LESS than or equal to length of face   



7. Female, P. polytrichus vs. P. potentillae vs. P. atramontensis

1P. atramontensis - Head, clypeus shape, sides of clypeus BENT DOWN approximately 60 degrees - Clypeus rim, U-SHAPED when viewed end on - Overall body size, 6 to 7mm, SMALLER in direct comparison with P. polytrichus and LARGER than P. potentillae - Overall body hair, only moderately hairy - Head, antennae, flagella segment 1 clearly LONGER than pedicel - Antennae, flagella segment 9, length clearly GREATER than width    1P. polytrichus - Head, clypeus shape, sides of clypeus NOT obviously bent down - Clypeus rim, shaped as an UNFLEXED BOW when viewed end on - Overall body size, 7 to 8mm LARGER in direct comparison with P. atramontensis and P. pontentillae - Overall body hair, quite HAIRY - Head, antennae, flagella segment 1 clearly LONGER than pedicel - Antennae, flagella segment 9, length about EQUAL to width    1P. potentillae - Head, clypeus shape, sides of clypeus BENT DOWN approximately 60 degrees - Clypeus rim, U-SHAPED when viewed end on - Overall body size, 5 to 6.5 mm, VERY SMALL in comparison with P. atramontensis and P. polytrichus - Overall body hair, only moderately hairy - Head, antennae, flagella segment 1 EQUAL in size to pedicel - Antennae, flagella segment 9, length LESS THAN or EQUAL to width