Abdomen, upper side, color pattern | Forewing, 1st transcubital vein, structure | Head, antennal scape, color on front side - Back side usually completely dark | Head, cheek, directly under the mandible base, presence or absence of a drawn out peak or point - Look carefully in the hair | Head, clypeus, color pattern | Head, face, color above the level of the antennae | Head, face, paroccular area below the level of the antennae, color pattern | State or province where bee was collected | Subgenus | Thorax, pronotum, color pattern | Wings, color of veins

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Number scored for a state is in green.

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

17AL    5CT    7DC    17DE    22FL    18GA    11IL    11IN    4KY    7MA    17MD    2ME    11MI    17MS    18NC    1NH    17NJ    11NY    1New Brunswick    1Nova Scotia    8OH    8Ontario    10PA    1Prince Edward Island    2Quebec    3RI    18SC    4TN    17VA    1VT    11WI    5WV   

2. Abdomen, upper side, color pattern

6Dark with a single pair of small, light colored PATCHES on the extreme far sides of either or both T2 and T3    4Dark with broad light colored BANDS that extend across the middle of two or more segments without interruption    9Dark with light colored BANDS that extend across two or more segments and are briefly or extensively interrupted in the center    12Entirely dark    3Entirely pale to bright yellow to a reddish color    2Nearly completely dark, but with a thin band of pale to bright yellow lining the inside edge of the broad clear rim on one or all of the segments T3-T5   

3. Head, face, color above the level of the antennae

19Entirely dark    2Entirely pale to bright yellow    11Mostly dark but with the markings below the antenna extending into this region   

4. Head, clypeus, color pattern

6Cream colored entirely or nearly entirely - There may be a few small dark spots    3Entirely dark    3Mostly cream colored with dark along the upper margin    4Mostly dark with cream colored markings    7Mostly dark with pale to bright yellow markings    4Mostly pale to bright yellow with dark along the upper margin    14Pale to bright yellow entirely or nearly entirely, may have a few small dark spots   

5. Head, face, paroccular area below the level of the antennae, color pattern    [Explain]

4Entirely cream colored    7Entirely dark    9Entirely pale to bright yellow    8Mostly dark with light colored markings    7Pale or bright yellow nearly filling the area, except along the outer subantennal suture where it is dark   

6. Head, antennal scape, color on front side - Back side usually completely dark

10Dark with pale or bright yellow markings    5Entirely dark    20Mostly or entirely pale to bright yellow   

7. Thorax, pronotum, color pattern

13Dark with pale to bright yellow markings    15Entirely dark    2Entirely pale to bright yellow   

8. Head, cheek, directly under the mandible base, presence or absence of a drawn out peak or point - Look carefully in the hair    [Explain]

22Absent    5Present   

9. Forewing, 1st transcubital vein, structure    [Explain]

6Branched near base, forming a tiny additional cell    24Simple, NO branching, nor any additional tiny cell   

10. Wings, color of veins

18Clear to pale yellow or milky white    14Light brown to dark brown   

11. Subgenus

6Alloperdita    2Cockerellia    7Hexaperdita    11Perdita