Click here to choose the groups of species to include in the guide | Female, C. calcarata and C. mikmaqi vs C. dupla - Note that these three species are very closely related and can be exceptionally difficult to distinguish - Expect some to not resolve - Female C. mikmaqi and C. calcarata are separated in a separate character | Female, front tibiae, at the base | Female, head, region between the eye and the BASE of the antenna | Male, abdomen, T7, projection sticking prominently out from the end | Male, hind leg, femur | Sex, number of antennal segments | State or province where bee was collected | Subgenus

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Number scored for a state is in green.

1. Click here to choose the groups of species to include in the guide    [Explain]

12DEFAULT - Eastern species    34Species under development - Primarily Western   

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

10AL    8CT    9DC    10DE    12FL    12GA    8IL    8IN    7KY    8MA    10MD    6ME    8MI    10MS    12NC    6NH    8NJ    8NY    6New Brunswick    4Northwest Territories    6Nova Scotia    8OH    6Ontario    8PA    6Quebec    7RI    12SC    8TN    10VA    6VT    8WI    8WV   

3. Sex, number of antennal segments

6Female, 12    6Male, 13   



4. Female, front tibiae, at the base

1Ivory stripe running down one third to two thirds of the tibia - Lacking mark on femur    2Ivory stripe running one third to two thirds the length of the tibia - UNIQUE, A small ivory mark is also present on the adjacent end of the femur    3Round ivory mark only, although some of these species exhibit a small, faded patch of ivory just below the clear ivory mark in addition to this basal round mark   

5. Male, hind leg, femur

2The underside greatly dilated to form a very obvious triangle shaped projection, the tip of that projection is pointed, the projection is centered almost exactly in the middle of the femur    4The underside greatly dilated to form a very obvious triangle shaped projection, the tip of that projection is slightly rounded, the projection is centered more towards the base of the femur than the middle   



6. Male, abdomen, T7, projection sticking prominently out from the end

1Composed of two widely separated dramatic points or tubercles    4With a single, longitudinal, median, shelf-like, very broad and thin flange, more than twice as wide as long    1With a single, median, plate-like, thin flange, about equally long as wide   




7. Female, C. calcarata and C. mikmaqi vs C. dupla - Note that these three species are very closely related and can be exceptionally difficult to distinguish - Expect some to not resolve - Female C. mikmaqi and C. calcarata are separated in a separate character    [Explain]

2C. calcarata and C. mikmaqi - Thorax, scutum, there is ONE column of pits running down either side of the line that runs down the center of the scutum. This column varies from complete to incomplete, sometimes having gaps where pits are not present. There are rarely additional columns of incomplete pits. Also, running along the INSIDE of or MEDIAL to the parapsidal line, which is a groove in the scutum running near the tegula, there is ONE column of pits that is almost always INCOMPLETE, usually with NO additional incomplete columns, note that pits cover the entire anterior portion of the scutum in both species    2C. dupla - Thorax, scutum, there is one COMPLETE, uniform, regularly spaced column of pits both sides of the line that runs down the center of the scutum and are generally paralleled by 2-3 ADDITIONAL complete or incomplete column of pits. Additionally, running along the INSIDE of or MEDIAL to the parapsidal line there is ONE COMPLETE column of pits that is generally paralleled by 1-2 ADDITIONAL incomplete or complete columns of pits. All together a more heavily pitted scutum is present   

8. Female, head, region between the eye and the BASE of the antenna

11 row of minute pits bordering the eye, remaining area completely smooth    5More than 1 row of pits   



9. Subgenus

4Ceratinula    2Euceratina    40Zadontomerus