| 1. State or province where bee was collected [Explain] |
| 2AL 1AR 6AZ 3CA 1CT 2DC 2DE 2FL 2GA 1IL 1IN 1KS 2KY 2LA 1MA 2MD 1ME 1MI 1MO 2MS 2NC 1NE 1NH 1NJ 4NM 3NV 1NY 1OK 2OR 1Ontario 1PA 1RI 2SC 2TN 7TX 3UT 2VA 1VT 2WI 2WV |
| 2. Head, antennae, scape color |
| 5All black 5With yellow stripe |
| 3. Head, parocular area |
| 2All black 8With at least some yellow present |
| 4. Head, eyes, inner margins |
| 5CLEARLY converging towards the top of the head 5PARALLEL or very nearly so |
| 5. Thorax, scutum, hair, color |
| 4All dark 9With at least some light colored hairs in the anterior half |
| 6. Leg, middle, color of hair on tibia and basitarsus |
| 4All YELLOW or PALE hairs 4Black with patches of PALE hair 5Entirely BLACK |
| 7. Abdomen, color - Note that determining the metallic reflections can be tricky without experience |
| 7Black with purple metallic iridescence 4Bright blue-green with metallic reflections 5Dark black to dark brown 2Yellow |
| 8. Subgenus |
| 1Neoxylocopa 1Notoxylocopa 2Schonnherria 2Stenoxylocopa 2Xylocopoides |