Click here to choose the groups of genera to include in the guide | Head, labrum, shape - Note that the extent of the labrum can be hidden by the mandibles when closed | Leg, arolium - A pad-like structure that rests between the two claws | Leg, claws, shape | Length of FEMALE bee - Use With Caution, measurements taken directly from Mitchell, your measurements may differ from his | Length of MALE bee - Use With Caution, measurements taken directly from Mitchell, your measurements may differ from his | Optional shortcuts - Bee family - Click on family, click search, then click simplify to create new smaller guide just for that family | Optional shortcuts - Click on group, click search, then click simplify to create new smaller guide just for the members of that group | Sex - Telling Males from Females - Note that this character is NOT scored for any particular genus, it is just here to be useful - Female - 12 total antennal segments, counting the scape and the pedicel - 6 abdominal tergites - Has a sting, but this is often retracted - - - Male - 13 total antennal segments, counting the scape and pedicel, be aware that males of the genus Nomada often have the pedicel recessed INTO the top of the scape and can be missed - 7 abdominal tergites - Genitalia at times visible | State or province where bee was collected | Thorax and or abdomen, markings on the surface - Note, this is NOT the hair color | Thorax, axilla, shape | Thorax, primary color - Note this is the base color, not the hair color, there can be various other markings in addition | Wing, basal vein of forewing | Wing, jugal to vannal lobe ratio | Wing, submarginal cell number

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

33ADMIN ONLY - ALL    33Caribbean islands, not including Trinidad/Tobago - Under development, use with caution - Click here for ALL genera found in the Caribbean    30Eastern United States and Canada ONLY - Click here for the genera found East of the Mississippi    30Mexico - Caution, this area is under development, some genera still need to be added and some unresolved groups may occur - Please report any discrepancies, as limited specimens were available for some groups - Click here for ALL genera found in Mexico    18United Kingdom - Under development but usable with caution    30United States and Canada - Click here for ALL genera found in the entire US and Canada   

2. State or province where bee was collected

33ADMIN ONLY - ALL    1AK    2AL    2AR    2AZ    3Aguascalientes    1Alberta    7Bahamas    2Baja California    2Baja California Sur    2Barbados    2British Columbia    2CA    2CO    2CT    2Campeche    1Cayman Islands    4Chiapas    2Chihuahua    2Coahuila    2Colima    16Cuba    1Curacao    2DC    2DE    5Dominica    4Dominican Republic    2Durango    5FL    2GA    3Grenada    6Guadeloupe    2Guanajuato    3Guerrero    1HI    6Haiti    3Hidalgo    2IA    2ID    2IL    2IN    4Jalisco    12Jamaica    2KS    2KY    2LA    2MA    2MD    2ME    2MI    2MN    2MO    2MS    3MT    2Manitoba    2Mexico - This is the state in Mexico, not the entirety of Mexico    3Michoacan    7Montserrat    4Morelos    2NC    2ND    2NE    2NH    2NJ    2NM    2NV    2NY    3Nayarit    2New Brunswick    2Newfoundland and Labrador    1Northwest Territories    2Nova Scotia    2Nuevo Leon    2OH    2OK    2OR    5Oaxaca    2Ontario    3PA    2Prince Edward Island    3Puebla    33Puerto Rico    2Quebec    2Queretaro    3Quintana Roo    2RI    2SC    2SD    1Saint Lucia    6Saint Vincent and Grenadines    4San Luis Potosi    2Saskatchewan    3Sinaloa    3Sonora    2TN    5TX    3Tabasco    3Tamaulipas    3Tlaxcala    2UT    2VA    2VT    6Veracruz    2WA    2WI    2WV    2WY    3Yucatan    2Yukon    2Zacatecas   

3. Optional shortcuts - Bee family - Click on family, click search, then click simplify to create new smaller guide just for that family

33ADMIN ONLY - ALL    16Apidae    10Halictidae    7Megachilidae   





4. Optional shortcuts - Click on group, click search, then click simplify to create new smaller guide just for the members of that group

33ADMIN ONLY - ALL    1Apinae-Anthophorini    1Apinae-Apini    4Apinae-Centridini    2Apinae-Eucerini    4Apinae-Exomalopsini    1Apinae-Melectini    1Halictinae-Augochlorini    9Halictinae-Halictini    7Megachilinae-Lithurgini, Megachilini, Dioxyini    2Nomadinae    1Xylocopinae   

5. Sex - Telling Males from Females - Note that this character is NOT scored for any particular genus, it is just here to be useful - Female - 12 total antennal segments, counting the scape and the pedicel - 6 abdominal tergites - Has a sting, but this is often retracted - - - Male - 13 total antennal segments, counting the scape and pedicel, be aware that males of the genus Nomada often have the pedicel recessed INTO the top of the scape and can be missed - 7 abdominal tergites - Genitalia at times visible


6. Head, labrum, shape - Note that the extent of the labrum can be hidden by the mandibles when closed

10Broader than long    1Longer than broad   



7. Thorax, primary color - Note this is the base color, not the hair color, there can be various other markings in addition

12Blue, blue-green, or dark green, usually dulled by a rough surface or inscribed microscopic surface lines    2Bright, shiny, race car, in-your-face green - at times with strong gold or blue overtones    31Other colors, this can include black, brown, red, yellow, and white colors   




8. Thorax and or abdomen, markings on the surface - Note, this is NOT the hair color    [Explain]

3Bright yellow, white, or red - rarely, entirely red    31None, entire body black, brown, metallic or abdomen ALONE red. upperside of abdomen rarely with narrow cream - colored or dull yellowish markings along rims of segments   



9. Thorax, axilla, shape

3Axilla, end projecting out of the rear of the scutellum as a triangle, spine, or, rarely, rounded over    20Rear margin tame, without projection, in line with the rest of the scutellum   



10. Wing, submarginal cell number

162    263   



11. Wing, basal vein of forewing

23Gently and UNIFORMLY arched or straight THROUGHOUT its length    10Lower portion STRONGLY bent or arched   



12. Wing, jugal to vannal lobe ratio

1At least nearly three-fourths as long    8Less, usually much less, than two-thirds as long   



13. Leg, arolium - A pad-like structure that rests between the two claws

12Absent - look closely, while there may be no pad there is often a clump of hairs present    22Present - although sometimes minute and usually also associated with long hairs   



14. Leg, claws, shape

5Cleft or with inner tooth   


15. Length of FEMALE bee - Use With Caution, measurements taken directly from Mitchell, your measurements may differ from his

72    93    134    135    246    247    258    329    2810    2611    2612    2013    1914    1815    1816    1417    1218    719    620    521    522    123    124    125   

16. Length of MALE bee - Use With Caution, measurements taken directly from Mitchell, your measurements may differ from his

92    133    144    215    236    267    278    319    2610    2511    1912    1913    1914    1615    1116    817    418    219    120    121    122    123