Abdomen, T1, color | Head, clypeus, color | Head, facial fovea, length | State or province where bee was collected | Subgenus | Thorax, pronotal collar, color | Thorax, propodeum, appearance of propodeal triangle

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Number scored for a state is in green.

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

5AL    9CT    8DC    8DE    4FL    6GA    8IL    8IN    8KY    9MA    8MD    9ME    9MI    4MS    7NC    8NH    9NJ    9NY    8New Brunswick    2Newfoundland and Labrador    8Nova Scotia    8OH    9Ontario    9PA    2Prince Edward Island    8Quebec    9RI    7SC    3SD    7TN    8VA    9VT    9WI    8WV   

2. Head, clypeus, color

9All DARK    1With CREAMY markings or inflections across rim, otherwise dark    2With YELLOW spot in middle of apical third, otherwise dark   

3. Thorax, pronotal collar, color

6Entirely black    6Yellow or ivory marks present, may be extensive or small   

4. Abdomen, T1, color

9All black or black-brown   

5. Head, facial fovea, length    [Explain]

91. SHORT, only extending to FRONT edges of lateral ocelli, or very nearly so    62. MEDIUM, extending to MIDDLE of lateral ocelli, or very nearly so   

6. Thorax, propodeum, appearance of propodeal triangle    [Explain]

5WRINKLED THROUGHOUT as the skin of a raisin    9WRINKLED only on the broad basal portion of the triangle, triangle apex is PEBBLED   

7. Subgenus

1Cephalylaeus    5Hylaeus    3Prosopis