Abdomen, T2, color of hair - Be careful of worn specimens with hair RUBBED OFF or the presence of very short hairs | Abdomen, T7, rim, form of the apical rim at the MIDDLE | Abdomen, terga, presence of pale, clearly defined apical hair bands along the rim and color of the rim - T2 is the best segment to use for this, make sure to look under the microscope | Body length in mm, when measured from tip of abdomen to front of head | Head, antennae, scape, integumental color | Head, clypeus, integumental color, not counting the thin apical rim | Head, mandible, proportion of the visible, outer face that is yellow | Head, paraocular area, integumental color | Mid leg, presence of middistitarsal brush, a dense brush of hairs arising from the last tarsal segment | Rear leg, basitarsus, shape of inner margin | State or province where bee was collected | Subgenus | Subgenus Micranthophora vs other subgenera - Fore wing, first submarginal cell, presence or absence of hairs - Make sure to view the wing from both sides | Thorax, scutum, hair color

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1. Subgenus

54ALL subgenera    1Anthophora    7Anthophoroides    1Clisodon    8Lophanthophora    3Melea    26Micranthophora    4Mystacanthophora    2Paramegilla    6Pyganthophora   

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

2AK    3AL    2AR    48AZ    5Aguascalientes    5Alberta    44Baja California    13Baja California Sur    11British Columbia    46CA    23CO    5CT    3Chiapas    21Chihuahua    13Coahuila    3Colima    6DC    6DE    7Durango    3FL    4GA    4Guanajuato    4Guerrero    3Hidalgo    2IA    17ID    5IL    5IN    5Jalisco    9KS    5KY    4LA    5MA    6MD    3ME    5MI    4MN    2MO    3MS    10MT    4Manitoba    4Mexico, the state in Mexico    4Michoacan    4Morelos    4NC    7ND    7NE    3NH    6NJ    33NM    41NV    5NY    5Nayarit    2New Brunswick    2Northwest Territories    2Nova Scotia    8Nuevo Leon    5OH    12OK    20OR    3Oaxaca    3Ontario    6PA    3Prince Edward Island    4Puebla    3Quebec    4Queretaro    1Quintana Roo    5RI    4SC    9SD    5San Luis Potosi    4Saskatchewan    5Sinaloa    35Sonora    4TN    23TX    3Tabasco    5Tamaulipas    3Tlaxcala    33UT    6VA    4VT    3Veracruz    18WA    5WI    6WV    19WY    2Yukon Territories    6Zacatecas   

3. Body length in mm, when measured from tip of abdomen to front of head

45    86    167    258    309    2810    2611    2612    2713    2614    2415    1916    1517    1118    519   

4. Head, mandible, proportion of the visible, outer face that is yellow

121. All dark - Dark brown to black    242. With some amount of yellow coloration, BUT usually less than half of the mandible is yellow    343. With a great deal of yellow present on the mandible, only the very apical third or less of the mandible darkly colored   

5. Head, clypeus, integumental color, not counting the thin apical rim

41. All dark, dark brown to black    392. With some degree of yellow coloration, often a transverse strip of yellow along the rim of the clypeus, sometimes the yellow reaching all the way to the supraclypeus, but if this happens then there is still black bordering the sides of the clypeus from the base to the apex    213. Almost all yellow, but with a small amount of dark coloration EXTENDING ONTO the clypeus from the tentorial pits which is little more than a dot, IF with more extensive black then it DOES NOT reach from the top to the bottom of the clypeus    124. Entirely yellow   

6. Head, paraocular area, integumental color

251. All black    102. Yellow present, but not extending to the lower level of the antennal fossae    183. Yellow present, about equal to the lower level of the fossae    274. Yellow present, reaching BETWEEN bottom and top of the fossae    145. Yellow present, about equal to top of the fossae    56. Yellow present, extending past top of the fossae   

7. Head, antennae, scape, integumental color

11All dark, brownish to black    48With at least some yellowish coloration   

8. Thorax, scutum, hair color

301. All light - Whitish to yellowish or VERY light brownish orange    292. Primarily light - Whitish or yellowish, but with some very small number of darker hairs which may be easily overlooked if not careful, these limited dark hairs often ONLY found medially so the rims of the scutum appear only lightly haired    283. A MIXTURE of light and dark hairs - With the presence of both colors readily apparent throughout all or most of the scutum   

9. Mid leg, presence of middistitarsal brush, a dense brush of hairs arising from the last tarsal segment

45Absent    15Present - There is a distinct tuft arising from both the anterior and posterior sides of the last tarsal segment of the middle leg, these hairs much longer than those nearby and often curving toward the tip of the leg such that they appear as a half-circle, although sometimes they only point straight out   

10. Rear leg, basitarsus, shape of inner margin

441. Inner margin straight, unmodified, lacking a tooth or angle    92. Inner margin with a tooth or angle about 1/3 of the way from the base, this tooth short and protruding from the margin of the basitarsus by about half the width of the basitarsus or less    73. Inner margin with a tooth or angle about 1/3 of the way from the base which projects off the basitarsus by clearly more than half its width, often by as much or more than the width of the basitarsus   

11. Abdomen, T2, color of hair - Be careful of worn specimens with hair RUBBED OFF or the presence of very short hairs

201. All light, white or yellowish or, rarely, somewhat orangish    312. Primarily light, although some darker hairs are also present, these dark hairs sometimes much shorter and harder to see than the light hairs    253. A thorough mix of light and dark hairs, hard to tell which is dominant    234. Primarily dark, although some lighter hairs are also present    25. All dark, brown or black   

12. Abdomen, terga, presence of pale, clearly defined apical hair bands along the rim and color of the rim - T2 is the best segment to use for this, make sure to look under the microscope

4Absent - BUT appearing present because the underlying integument along the rim is colored clearly WHITE such that it may appear to have a hair band at first glance    17Absent - BUT appearing present due to the underlying integument along the rim being CLEAR, upon inspection you will see that the hairs along the rim are about the same color and density as those at the base, BUT appearing to have a band nonetheless due to the integument of the apical rim being clear    25Absent - With the integument uniformly colored throughout the segment and the hairs the hairs on the segment the same color as the basal region    21Present - with an apical hair band that clearly contrast in color with the hairs of the hairs basal region or, in some cases, there may be no OBVIOUS hairs along the base because they are dark and extremely short and thin   

13. Abdomen, T7, rim, form of the apical rim at the MIDDLE

91. Weakly emarginate - With two weakly-developed, BROADLY rounded lobes found lateral to a slight medial concavity which point LATERALLY or POSTEROLATERALLY such that the tips appear pointed diagonally rather than straight toward the rear, often appears straight across due to hairs hiding the projections    252. Emarginate - With two clear projections found lateral to a medial concavity, these projections often pointed with the tips forming right angles or SLIGHTLY acute and appearing TRIANGULAR and usually POINTED POSTERIORLY as a result    223. Bidentate - With the paired projections appearing slender such that their sides are parallel or nearly so, appearing spike-like but often with ROUNDED TIPS    214. Pygidial plate or similar structure present such that there is a singular medial projection rather than paired projections BUT keep in mind that this structure may be cleft   

14. Subgenus Micranthophora vs other subgenera - Fore wing, first submarginal cell, presence or absence of hairs - Make sure to view the wing from both sides

26Micranthophora - Absent, note that some male A. squammulosa from Jalisco, Mexico have been seen to have hairs in the first submarginal cell - Head and eyes proportionately larger in comparison to rest of body, in direct comparison to other groups    33Other subgenera - Present