1DO NOT CLICK THIS BUTTON -- David Cappaert has created a guide to the Andrena characters listed in the Discover Life Andrena key. Please click on the EXPLAIN button for a link to the website. |
1261. Click here to key bees from east of the Mississippi - excludes western species and those rare and potentially invalid species we have not seen 1312. Click here to include all eastern species and exclude all western species 4503. 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 5204. 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 |
4. Region where specimen was collected |
4791. United States 1672. Canada 2183. Mexico 74. South of Mexico 519Zz Do not show this character again |
5. Locality where specimen was collected in USA [Explain] |
18AK 57AL 64AR 149AZ 262CA 155CO 92CT 102DC 103DE 27FL 91GA 91IA 129ID 108IL 105IN 93KS 99KY 38LA 92MA 103MD 76ME 100MI 96MN 102MO 48MS 116MT 99NC 76ND 120NE 79NH 111NJ 147NM 167NV 103NY 104OH 74OK 140OR 111PA 92RI 91SC 105SD 98TN 118TX 142UT 101VA 79VT 124WA 93WI 104WV 148WY 519Zz Do not show this character again |
6. Locality where specimen was collected in Canada |
73Alberta 106British Columbia 54Manitoba 50New Brunswick, Nova Scotia or Prince Edward Island 10Newfoundland or Labrador 16Northwest Territories or Nunavut 91Ontario 76Quebec 57Saskatchewan 14Yukon 519Zz Do not show this character again |
7. Flight Season - Month |
501. January 1762. February 3073. March 3564. April 3745. May 3276. June 3017. July 2288. August 1539. September 10010. October 5511. November 1812. December |
8. Body length, in mm [Explain] |
94 305 826 1967 3068 3769 39810 37311 30412 20213 12514 7115 3216 917 318 521Zz Do not show this character again |
9. Head, vertex height, distance from lateral ocelli to rear margin of head [Explain] |
2511. Less than 1 ocellar diameter | 2792. About 1 ocellar diameter | 2303. More than 1 to 1.5 ocellar diameters | 674. More than 1.5 to 2 ocellar diameters | 385. Two or more ocellar diameters |
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10. Head, facial fovea, length |
11. Head, clypeus, surface texture between pits [Explain] |
228DULLED throughout | 345SHINY in center or apically and DULLED at least along dorsal and lateral margins | 116SHINY throughout |
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12. Head, labral process, margin - - Note, often you will want to choose more than one category |
13. Thorax, Pronotum, Humeral Angle - Note, very difficult to determine unless you have had practice, so you may want to skip |
236ABSENT, rear margin of pronotum smoothly rounded | 289Present, but WEAK, with slight angle but not with distinct corners | 115Present, distinctly squared off forming CORNERS |
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14. Thorax, propodeal triangle, percentage of LENGTH coarsely sculptured [Explain] |
3450 percent - surface uniformly smooth | 2985 - 50 percent | 16150 - 80 percent | 102100 percent - triangle completely filled |
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15. Legs, rear legs, tibial scopal hair formation |
16. Wings, forewing, number of submarginal cells |
842 | 4743 |
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17. Abdomen, Tergum 2, Pale apical hair bands |
1511. Complete, not interrupted medially 2672. Narrowly interrupted medially, no more than half of apical margin bare 2223. Broadly interrupted, more than half of apical margin bare 2134. Absent, hair on apical margin not denser than elsewhere |
18. Abdomen, Tergum 2, pitting spacing on longitudinal center of segment - - Note, ignore pitting patterns along the rim and the very base of the segment |
209Absent or indistinct and difficult to see even at high magnification | 112Dense, separated by 1 pit width or less | 193Separated by 1-3 pit widths | 75Separated by 3-6 pit widths |
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19. Abdomen, Tergum 2, Surface texture in middle of tergum |
315GRANULAR or with fine lines, usually dull but may still be somewhat shiny | 154SMOOTH and SHINY |
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20. Subgenus, Classic LaBerge Version, note that the subgenera are being actively revised and this is the traditional classification - primarily useful for Andrena experts [Explain] |
2Anchandrena 45Andrena s.str. 2Aporandrena 3Archiandrena 3Augandrena 6Belandrena 91Callandrena 1Celetandrena 1Charitandrena 1Chaulandrena 29Cnemidandrena 2Conandrena 1Cremnandrena 4Dactylandrena 3Dasyandrena 9Derandrena 25Diandrena 1Erandrena 25Euandrena 1Geissandrena 2Genyandrena 7Gonandrena 9Hesperandrena 7Holandrena 1Iomelissa 1Larandrena 13Leucandrena 30Melandrena 22Micrandrena 3Nemandrena 2Notandrena 3Oligandrena 22Onagrandrena 1Opandrena 1Oxyandrena 10Parandrena 1Pelicandrena 7Plastandrena 2Psammandrena 3Ptilandrena 4Rhacandrena 2Rhaphandrena 24Scaphandrena 2Scoliandrena 19Scrapteropsis 11Simandrena 1Taeniandrena 18Thysandrena 25Trachandrena 15Tylandrena 1Unassigned 1Xiphandrena 32ZUnassigned 518Zz Do not show this character again |