| 1. State or province where bee was collected [Explain] |
| 16AL 5CT 7DC 17DE 22FL 18GA 11IL 11IN 4KY 7MA 17MD 2ME 11MI 16MS 18NC 1NH 17NJ 11NY 1New Brunswick 1Nova Scotia 8OH 8Ontario 9PA 1Prince Edward Island 2Quebec 3RI 18SC 4TN 17VA 1VT 11WI 5WV |
| 2. Hind legs, scopa, hair type - if filled with pollen usually impossible to determine [Explain] |
| 18At least half of scopal hairs are SIMPLE, ABSOLUTELY unbranched - some branched hairs usually present along sides and near base - Careful, branches can be minute and scale-like, very easy to mistake as simple 9Hairs are mostly BRANCHED, these branches are MINUTE and short, often scale-like, usually set at an acute angle to the mainstem regularly spaced throughout the last two-thirds of the hair, and visible only at high magnification, hairs along the edges with slightly longer branches which often lead to the mistake that the remaining hairs are without branches 2Hairs are relatively longer and more abundant than other species and clearly WAVY rather than straight |
| 3. Forewing, 1st intercubital vein |
| 6Branched, forming a triangular additional cell at its base that can range from large and conspicuous to minute and visible only under high magnification 22Simple, no branching, nor any additional tiny cell |
| 4. Head, mandible, shape |
| 24Normal, tip NOT flexed relative to base, may be gently curved toward head 2Tip flexed toward the head at nearly a right angle relative to base |
| 5. Thorax, upper and side surfaces, color pattern [Explain] |
| 2All pale, may have a few dark markings 1Dark with pale marking on pronotal lobe only 15Dark with pale markings on pronotum AND pronotal lobes 9Dark with pale markings on pronotum only 1Dark with pale markings on pronotum, pronotal lobe, and side surfaces 7Entirely dark with NO markings |
| 6. Abdomen, upper side, color pattern [Explain] |
| 13Dark with light colored PATCHES on the sides of two or more segments 5Dark with light colored bands that are BROAD and COMPLETE, extending across the entire middle of two or more segments 15Dark with light colored bands that extend across two or more segments, but are briefly INTERRUPTED in the center 9Dark, NO markings or with only 2 small patches on only one segment 3Pale yellow to reddish |
| 7. Wings, color of veins |
| 17Clear to milky white or pale yellow with a normal stigma 16Light to dark brown 1Pale yellow with a conspicuously dark stigma |