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

Check boxes for all that apply. If uncertain, skip character or select several states. Then click on any search button.
Navigate with above index or scroll bar.

Number scored for a state is in green.

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

17AL    8CT    18DC    16DE    17FL    19GA    16IL    16IN    17KY    15LA    8MA    17MD    4ME    10MI    19MS    20NC    4NH    18NJ    13NY    2New Brunswick    2Nova Scotia    16OH    7Ontario    18PA    2Quebec    8RI    21SC    1SD    18TN    19VA    3VT    11WI    18WV   

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

21Black to dark brown    11Red to orange   

3. Thorax, integument color of tegula

19Black to brown    14Red to orange   

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

12Black to brown with some red or orange    17Entirely black to brown    9Entirely red or orange   

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

16Absent    16Faintly distinguishable from rest of clypeus    11Strongly distinct from rest of clypeus   




6. Head, clypeus, size of pits

20All pits the SAME relatively small size    12With larger pits OBVIOUSLY distinct from smaller pits - This is the more rare state    15With larger pits that are just faintly distinguishable from smaller pits   




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

17LACKING hairs of this type    5Length GREATER than 1 ocellar diameter    13Length 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]

4Absent, anterior scutum entirely dark, either with all dark hair or lacking hair altogether    17Distinct, NOT clearly connected to pale hair on apical margin    14Distinct, clearly CONNECTED to pale hair on apical margin    3Indistinct, NOT distinguishable from pale hair on apical half of scutum   





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

10Grayish to white - The less commonly seen state    16Pale yellow   

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

9Not parallel    20Parallel or nearly so   



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

16All brown    1All white    17Brown and white MIXED - Most often the tips are white and the bases brown   

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

2Absent from all sterna    20On S2-S3    17On S2-S4    2On S3 only   

13. Abdomen, pygidial plate, width    [Explain]

20Moderately wide, about 1.5 ocellar diameters at subapical ridge    3Narrow, about one ocellar diameter at subapical ridge    6Wide, 2-3 ocellar diameters at subapical ridge   

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

2Thorax, pronotal collar, length at midpoint, LONG, about 2 ocellar diameters in length    23Thorax, pronotal collar, length at midpoint, NORMAL, about one ocellar diameter in length   



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

21DEFAULT option, species for which the male is known - ALWAYS choose this option first    2Species for which the male is currently UNKNOWN