Abdomen, T6, pattern of small spines on surface - Note that this segment is often retracted and not observable - See Explain for details about how this is different from other bees structure | Abdomen, sternum | Body, size | Head, distance between the edge of the median ocellus and the APEX of the ridge, spine, or flange that projects above the surface between the antennae, given in terms of ocelli diameters | Head, region between the antennae | State or province where bee was collected | Subgenus | Thorax, scutum, color of dorsal hairs

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Number scored for a state is in green.

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

2AL    2AR    6AZ    3CA    4CO    1CT    2DC    2DE    2FL    2GA    1IL    1IN    1KS    2KY    2LA    1MA    2MD    1ME    1MI    1MO    2MS    2NC    1NE    1NH    1NJ    4NM    3NV    1NY    2OH    1OK    2OR    1Ontario    1PA    1RI    2SC    2TN    7TX    3UT    2VA    1VT    2WA    1WI    2WV   

2. Body, size

7Large, more than 20 mm    4Small, less than 20 mm   

3. Abdomen, sternum

4Center of S2-S6 with a longitudinal, subtle, very SLIGHT KEEL, running down the center of all the segments - The rims of S3-S4 with a tiny TRIANGULAR PROJECTION where the keel crosses    5Center of S2-S6, NO keel present, but there may be a central unpitted longitudinal line running in the same place - The central rims of S3-S4 NO keel and NO small triangular projection   

4. Head, distance between the edge of the median ocellus and the APEX of the ridge, spine, or flange that projects above the surface between the antennae, given in terms of ocelli diameters

41-2    4Greater than 2    4Less than 1   

5. Head, region between the antennae

1A deep obvious pit present about the size of an antennae socket, but less than the size of an ocelli,    8No pit present at all   

6. Thorax, scutum, color of dorsal hairs

8Black    1Yellow   

7. Abdomen, T6, pattern of small spines on surface - Note that this segment is often retracted and not observable - See Explain for details about how this is different from other bees structure    [Explain]

72 spines, parallel to and just to either side of the sting-like pygidial plate - Can be hard to see in some hairy specimens    22 LINES of spines, termed prepygidial denticles, running from the base of the spine-like pygidial plate up towards the base of T6, these lines form a 90 degree angle to one another and extend almost to the base of T6 - If T6 is retracted then these 2 rows are NOT visible   

8. Subgenus

2Neoxylocopa    1Notoxylocopa    2Schonnherria    2Stenoxylocopa    2Xylocopoides