Abdomen, S4, apical fringe of hair, color | Abdomen, T1, basal and apical pale hair bands direction | Abdomen, pygidial plate, width | Abdomen, sterna, presence of appressed white hairs | Abdomen, terga, rim, color of hair band - See explain, very tricky | Head, clypeus, presence or absence of a smooth, impunctate, slightly elevated longitudinal midline | Head, clypeus, size of pits | Legs, integument color, not including tarsi, coxae, or spines | State or province where bee was collected | T. quadrifasciatus atlanticus vs.all | T. rugosus and micropygius vs. all | Thorax, integument color of pronotal lobes, not hair color | Thorax, integument color of tegula | Thorax, mesepisternum, length of erect simple hairs on lateral surface - NOT ventral surface | Thorax, scutum, PRESENCE or ABSENCE of a PAIR of distinct NARROW STRIPS OF PALE HAIR running longitudinally from the anterior margin of the scutum

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Number scored for a state is in green.

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

2AL    3CT    2DC    2DE    2FL    2GA    3IL    3IN    2KY    2LA    3MA    2MD    3ME    3MI    2MS    2NC    3NH    2NJ    3NY    1New Brunswick    1Nova Scotia    3OH    3Ontario    3PA    1Quebec    3RI    2SC    2TN    2VA    3VT    3WI    2WV   

2. Thorax, integument color of pronotal lobes, not hair color

3Black to dark brown    1Red to orange   

3. Thorax, integument color of tegula

3Black to brown    2Red to orange   

4. Legs, integument color, not including tarsi, coxae, or spines

3Black to brown with some red or orange    2Entirely black to brown    1Entirely red or orange   

5. Head, clypeus, presence or absence of a smooth, impunctate, slightly elevated longitudinal midline    [Explain]

2Absent    3Faintly distinguishable from rest of clypeus    3Strongly distinct from rest of clypeus   




6. Head, clypeus, size of pits

3All pits the SAME relatively small size    1With larger pits OBVIOUSLY distinct from smaller pits - This is the more rare state    3With larger pits that are just faintly distinguishable from smaller pits   




7. Thorax, mesepisternum, length of erect simple hairs on lateral surface - NOT ventral surface

1LACKING hairs of this type    2Length GREATER than 1 ocellar diameter    2Length LESS than 0.5 ocellar diameter   




8. Thorax, scutum, PRESENCE or ABSENCE of a PAIR of distinct NARROW STRIPS OF PALE HAIR running longitudinally from the anterior margin of the scutum    [Explain]

2Distinct, NOT clearly connected to pale hair on apical margin    3Distinct, clearly CONNECTED to pale hair on apical margin   



9. Abdomen, terga, rim, color of hair band - See explain, very tricky    [Explain]

2Grayish to white - The less commonly seen state    1Pale yellow   

10. Abdomen, T1, basal and apical pale hair bands direction    [Explain]

3Parallel or nearly so   


11. Abdomen, S4, apical fringe of hair, color    [Explain]

1All brown    1All white    3Brown and white MIXED - Most often the tips are white and the bases brown   

12. Abdomen, sterna, presence of appressed white hairs    [Explain]

2On S2-S3    3On S2-S4   

13. Abdomen, pygidial plate, width    [Explain]

3Moderately wide, about 1.5 ocellar diameters at subapical ridge    1Narrow, about one ocellar diameter at subapical ridge   

14. T. quadrifasciatus atlanticus vs.all    [Explain]

3Thorax, pronotal collar, length at midpoint, NORMAL, about one ocellar diameter in length   

15. T. rugosus and micropygius vs. all    [Explain]

3DEFAULT option, species for which the male is known - ALWAYS choose this option first