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

23AL    21CT    22DC    23DE    24FL    23GA    27IL    26IN    25KY    21MA    26MD    15ME    26MI    22MS    26NC    14NH    25NJ    25NY    11New Brunswick    2Newfoundland and Labrador    11Nova Scotia    24OH    27Ontario    24PA    10Prince Edward Island    13Quebec    21RI    23SC    23TN    25VA    14VT    25WI    22WV   

2. Flight season Month during which your specimen was collected

11 - January    12 - February    83 - March    154 - April    195 - May    286 - June    277 - July    218 - August    179 - September    1010 - October    811 - November    112 - December   

3. Head, malar space, distance from end of eye to mid point of mandible base

181. LACKING or nearly so    242. Between one quarter and half the width of the mandible base    43. 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

24Entirely PALE - White to dirty yellow    13Mixed 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

31Hairs SPARSELY to MODERATELY branched, resembling young wheat on the stalk, not so densely branched that the individual branches bases cannot be easily distinguished    5Hairs branched to such an extreme level that they each resemble DENSE, fuzzy, little bottle cleaners, hair branches so abundant and thick that no space is visible between individual branch bases   

6. Thorax, pronotum, shape of lateral angles

30Shaped as a SHARP TOOTH, acute, as a shark tooth, may be short or quite long    17UNMODIFIED, 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

28Lacking a semi-transparent dorsal ridge, the area colored the same throughout    12Present, its rim usually the color of light amber, but can be all dark   

8. Abdomen, T1, pattern of pits in CENTER of segment

8With SPARSE, EXCEPTIONALLY FINE, shallow pits, entire segment appearing unpitted from some angles    16With distinct pits, DENSELY arranged, interpit distances likely quite uniform, AVERAGING no more than 1 pit diameter, pits may be touching    26With 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

15EQUALLY dense    28Of GREATER density   

10. Abdomen, T2, pattern of hair

30Apical 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    4Apical hair band widely INTERRUPTED in CENTER, hair behind hair band may be either long or short, sparse or moderately dense, basal hair band absent    9BASAL HALF of segment and APICAL RIM areas obscured by short, appressed hair, hair much thinner in narrow space between rim and basal hair    5Entire surface obscured by short, appressed, VELVET like hair    2Relatively THIN THROUGHOUT, rim hair a little thicker than hair on the rest of the segment, but not such that it produces a heavy, obvious band   

11. Hind leg, basitarsus, relative width

20Medium width, about 1/3 of length    30Narrow, 1/4 of length, or less    1Wide, about 1/2 of length