Abdomen, T6, medial area | Abdomen, T7, projection sticking prominently out from the end - Shape best viewed ventrally | Fore leg, tibia | Head, preoccipital ridge vs carina | Hind leg, femur, femoral tooth shape | Hind leg, trocanter | State or province where bee was collected | Subgenus | Thorax, pronotal lobe, color

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Number scored for a state is in green.

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

3AL    1AR    7AZ    3British Columbia    13CA    4CO    3CT    3DC    3DE    4FL    4GA    2IA    5ID    3IL    3IN    2KS    3KY    2LA    3MA    3MD    2ME    3MI    1MN    2MO    4MS    2MT    1Manitoba    4NC    2ND    2NE    2NH    3NJ    6NM    5NV    3NY    2New Brunswick    1Northwest Territories    2Nova Scotia    3OH    3OK    7OR    2Ontario    3PA    2Quebec    3RI    4SC    2SD    3TN    12TX    6UT    3VA    2VT    4WA    3WI    3WV    4WY   

2. Abdomen, T7, projection sticking prominently out from the end - Shape best viewed ventrally

2No apical plate, instead with two widely separated points or tubercles    6With a single broad median flange, broader than long, either evenly rounded or truncate and flattened    14With a single median flange, about equally broad as long or longer than broad, often triangular to roundly triangular, apex pointed or with a low angle but not notched    1With single median flange, about equally broad as long, triangular with apex notched   





3. Hind leg, femur, femoral tooth shape    [Explain]

2Acute    17Obtuse    3Right angled, or slightly obtuse    6Tooth not apparent, only a thickening in the shape   





4. Hind leg, trocanter    [Explain]

14Angular    10Rounded   



5. Head, preoccipital ridge vs carina    [Explain]

17Preoccipital carina present    11Preoccipital ridge without a carina   



6. Thorax, pronotal lobe, color

4Dark without any ivory color    20Ivory marking   

7. Abdomen, T6, medial area

19No protuberance    7Protuberance, covered by hairs   



8. Fore leg, tibia

8Ivory mark on both the base of the tibia and the apex of the femur    14Ivory mark only on base of tibia    7Ivory stripe extending at least three-fourths the distance to the entire length of the tibia    2Ivory stripe extending less than three-fourths the distance   





9. Subgenus

1Calloceratina    2Ceratinula    1Euceratina    18Zadontomerus