Abdomen, T1, pattern of pits in CENTER of segment | Abdomen, T2, pattern of hair | Abdomen, T2, pit density relative to pit density on T1 - Compare the center of both segments | Flight season – Month during which your specimen was collected | Head, malar space, distance from end of eye to mid point of mandible base | Hind leg, basitarsus, relative width | State or province where bee was collected | Thorax, METAPLEURA, dorsal overhanging often semi-transparent lip or horizontal ridge located just BELOW the base of the hind wing - If hairy, probe carefully in this area with a pin tip, may be quite small and inconspicuous | Thorax, pronotum, shape of lateral angles | Thorax, scutum, color of hair | Thorax, scutum, type of hair

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Number scored for a state is in green.
1. State or province where bee was collected

7AL    9CT    7DC    7DE    7FL    7GA    8IL    8IN    7KY    9MA    8MD    9ME    9MI    7MS    7NC    9NH    8NJ    9NY    8New Brunswick    2Newfoundland and Labrador    8Nova Scotia    8OH    9Ontario    8PA    8Prince Edward Island    8Quebec    9RI    7SC    7TN    7VA    9VT    9WI    7WV   
2. Flight season – Month during which your specimen was collected

23 - March    34 - April    45 - May    86 - June    97 - July    58 - August    49 - September    310 - October    311 - November   
3. Head, malar space, distance from end of eye to mid point of mandible base

31. LACKING or nearly so    62. Between one quarter and half the width of the mandible base    33. Clearly GREATER than half, but LESS than 1X the width of the mandible base    14. 2X the width of the mandible base   
4. Thorax, scutum, color of hair

4Entirely PALE - White to dirty yellow    5Mixed pale and dark hairs - Careful often takes on only gray appearance with the hair shafts black and the short branches light in color   
5. Thorax, scutum, type of hair

8Hairs SPARSELY to MODERATELY branched, resembling young wheat on the stalk, not so densely branched that the individual branches bases cannot be easily distinguished   
6. Thorax, pronotum, shape of lateral angles

6Shaped as a SHARP TOOTH, acute, as a shark tooth, may be short or quite long    5UNMODIFIED, may be either rounded or squared off, not acute as a sharp tooth   


7. Thorax, METAPLEURA, dorsal overhanging often semi-transparent lip or horizontal ridge located just BELOW the base of the hind wing - If hairy, probe carefully in this area with a pin tip, may be quite small and inconspicuous

8Lacking a semi-transparent dorsal ridge, the area colored the same throughout    2Present, its rim usually the color of light amber, but can be all dark   
8. Abdomen, T1, pattern of pits in CENTER of segment

3With SPARSE, EXCEPTIONALLY FINE, shallow pits, entire segment appearing unpitted from some angles    5With distinct pits, DENSELY arranged, interpit distances likely quite uniform, AVERAGING no more than 1 pit diameter, pits may be touching    8With distinct pits, of MODERATE DENSITY, interpit distances not uniform, but AVERAGING between 1-3 pit diameters   
9. Abdomen, T2, pit density relative to pit density on T1 - Compare the center of both segments

4EQUALLY dense    8Of GREATER density   
10. Abdomen, T2, pattern of hair

9Apical hair band COMPLETE, hair behind hair band may be long or short, sparse or moderately dense, may also have a basal hair band, but if so, then space between bands is much wider than the width of the apical hair band    2Apical hair band widely INTERRUPTED in CENTER, hair behind hair band may be either long or short, sparse or moderately dense, basal hair band absent    2BASAL HALF of segment and APICAL RIM areas obscured by short, appressed hair, hair much thinner in narrow space between rim and basal hair   
11. Hind leg, basitarsus, relative width

5Medium width, about 1/3 of length    8Narrow, 1/4 of length, or less