Body length, in mm | Flight Season - Month | Head, clypeus, surface texture between punctures | Head, facial fovea, length | Head, labral process, margin | Head, vertex height, distance from lateral ocelli to rear margin of head | Initial inspection | Legs, rear legs, tibial scopal hair formation | Locality where specimen was collected in Canada | Locality where specimen was collected in USA | Metasoma, tergum 2, pale apical hair bands | Metasoma, tergum 2, puncture spacing on longitudinal center of segment - Note, ignore puncture patterns along the rim and the very base of the segment | Metasoma, tergum 2, surface texture in middle of tergum | Region where specimen was collected | Subgenus - for Andrena experts only | This guide is UNDER CONSTRUCTION | Thorax, pronotum humeral angle | Thorax, propodeal triangle, percentage of LENGTH coarsely sculptured | Wings, forewing, number of submarginal cells

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Number scored for a state is in green.

1. This guide is UNDER CONSTRUCTION

1221. Click here to key bees from east of the Mississippi - excludes western species and those rare and potentially invalid species we have not seen    1292. Click here to include all eastern species and exclude all western species    4473. Click here to include all species except those rare and potentially invalid species we have not seen - note that many western species haven t been completely scored so the guide may not resolve them    5174. Click here to keep all species in the key - note that many western species have not been completely scored so the guide is unlikely to resolve these species completely   

2. Initial inspection    [Explain]

518Normal FEMALE    1Normal MALE    1UNCOMMON: Stylopized   




3. Region where specimen was collected

4771. United States    1652. Canada    2183. Mexico    74. South of Mexico    518Zz Do not show this character again   

4. Locality where specimen was collected in USA    [Explain]

15AK    53AL    58AR    149AZ    262CA    154CO    90CT    99DC    100DE    27FL    89GA    86IA    129ID    106IL    102IN    92KS    97KY    36LA    90MA    101MD    73ME    91MI    82MN    96MO    45MS    115MT    97NC    74ND    118NE    76NH    107NJ    147NM    167NV    99NY    100OH    74OK    140OR    108PA    90RI    90SC    103SD    93TN    118TX    142UT    99VA    76VT    124WA    91WI    103WV    147WY    519Zz Do not show this character again   

5. Locality where specimen was collected in Canada

72Alberta    106British Columbia    52Manitoba    49New Brunswick, Nova Scotia or Prince Edward Island    10Newfoundland or Labrador    16Northwest Territories or Nunavut    88Ontario    73Quebec    56Saskatchewan    14Yukon    518Zz Do not show this character again   

6. Flight Season - Month

501. January    1762. February    3063. March    3564. April    3755. May    3266. June    2997. July    2268. August    1529. September    9910. October    5411. November    1812. December   

7. Body length, in mm    [Explain]

94    295    816    1947    3058    3739    39710    37111    30412    20213    12614    7115    3216    917    318    519Zz Do not show this character again   

8. Head, vertex height, distance from lateral ocelli to rear margin of head    [Explain]

2481. Less than 1 ocellar diameter    2782. About 1 ocellar diameter    2303. More than 1 to 1.5 ocellar diameters    664. More than 1.5 to 2 ocellar diameters    375. Two or more ocellar diameters   






9. Head, facial fovea, length

122Extremely long, reaching to below level of top margin of clypeus    302Long, reaching to below level of lower margin of antennal socket, sometimes to level of top margin of clypeus    164Moderate, reaching level of lower margin of antennal socket    118Moderate, reaching level of middle of antennal socket    49Short, reaching level of upper margin of antennal socket    20Very short, not reaching level of upper margin of antennal socket   







10. Head, clypeus, surface texture between punctures    [Explain]

226DULLED throughout    342SHINY in center or apically and DULLED at least along dorsal and lateral margins    116SHINY throughout   




11. Head, labral process, margin

2441. Entire, edge continuous from side to side    2452. Weakly emarginate    1263. Emarginate but not bidentate    1074. Bidentate - Note that in many bidentate species you have to turn the specimen almost upside down to see the bidentate tip, which is at times not visible from above    265. Pointed    16. UNCOMMON - With a median projection   







12. Thorax, pronotum humeral angle

234ABSENT, rear margin of pronotum smoothly rounded    291Present, but WEAK, with slight angle but not with distinct corners    113Present, distinctly squared off forming CORNERS   




13. Thorax, propodeal triangle, percentage of LENGTH coarsely sculptured    [Explain]

3430 percent - surface uniformly smooth    2965 - 50 percent    16050 - 80 percent    100100 percent - triangle completely filled   





14. Legs, rear legs, tibial scopal hair formation

3291. Hairs simple and unbranched IN CENTER of outside face of tibia, but hairs along outer edges of tibia can be branched or unbranched    582. Weakly branched throughout, only 1-3 branches per hair and/or branches very weak    943. Plumose, with many branches per hair    1As in stipator   





15. Wings, forewing, number of submarginal cells

1012    4723   



16. Metasoma, tergum 2, pale apical hair bands

1461. Complete, not interrupted medially    2622. Narrowly interrupted medially, no more than half of apical margin bare    2173. Broadly interrupted, more than half of apical margin bare    2144. Absent, hair on apical margin not denser than elsewhere   

17. Metasoma, tergum 2, puncture spacing on longitudinal center of segment - Note, ignore puncture patterns along the rim and the very base of the segment

207Absent or indistinct and difficult to see even at high magnification    111Dense, separated by 1 puncture width or less    192Separated by 1-3 puncture widths    74Separated by 3-6 puncture widths   





18. Metasoma, tergum 2, surface texture in middle of tergum

313GRANULAR or with fine lines, usually dull but may still be somewhat shiny    153SMOOTH and SHINY   

19. Subgenus - for Andrena experts only    [Explain]

2Anchandrena    45Andrena s.str.    2Aporandrena    3Archiandrena    3Augandrena    6Belandrena    91Callandrena    1Celetandrena    1Charitandrena    1Chaulandrena    28Cnemidandrena    2Conandrena    1Cremnandrena    4Dactylandrena    3Dasyandrena    9Derandrena    25Diandrena    1Erandrena    25Euandrena    1Geissandrena    2Genyandrena    7Gonandrena    9Hesperandrena    7Holandrena    1Iomelissa    1Larandrena    13Leucandrena    30Melandrena    21Micrandrena    3Nemandrena    2Notandrena    3Oligandrena    22Onagrandrena    1Opandrena    1Oxyandrena    10Parandrena    1Pelicandrena    7Plastandrena    2Psammandrena    3Ptilandrena    4Rhacandrena    2Rhaphandrena    24Scaphandrena    2Scoliandrena    19Scrapteropsis    11Simandrena    1Taeniandrena    18Thysandrena    25Trachandrena    15Tylandrena    1Xiphandrena    32ZUnassigned    517Zz Do not show this character again