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REMAINING (number with state)
Abdomen, T1, depressed apical rim
Shiny, not pitted or texturized (12)
Pitted or textured as if with tiny, round, pebbles (5)
Abdomen, T1, surface appearance - Not including depressed apical rim
MODERATELY pitted, interpit distances between 1 and 3 pit diameters on the middle 1/3 to 2/3 of T1 (8)
DENSELY pitted with interpit distances less than 1 pit diameter on at least 3/4 of T1 (6)
Smooth and SHINY, with only a FEW sparsely scattered pits, even in middle 1/3 (2)
With only a FEW fine pits sparsely scattered, surface finely TEXTURED as with tiny round pebbles (1)
Head, clypeus, color
Mostly YELLOW, with only the far sides of the apical rim black (13)
Entirely YELLOW, even on the far sides of the rim (4)
Mostly BLACK with a yellow spot in the center (1)
Head, inner margins of eyes, divergent vs parallel
Divergent (12)
Parallel or very nearly so (3)
Head, labrum, color
Entirely or mostly YELLOW (8)
Only labral process more or less yellow, area to either side of the process black (7)
Entirely BLACK (4)
Head, mandibles, color
Entirely or mostly YELLOW (11)
Entirely BLACK (3)
Head, scape, color
Entirely BLACK (12)
Mostly black with some YELLOW (4)
Head, supraclypeal area, color
Entirely BLACK (9)
Mostly black with SMALL AMOUNT of YELLOW, usually along clypeal suture (5)
At least half of area a SOLID YELLOW BLOCK (3)
Head, vertex, width as measured from lateral ocelli to back edge of head
Approximately 1.5 ocellar diameters (10)
Approximately 2 ocellar diameters (7)
Approximately 1 ocellar diameter (5)
Less than 1 ocellar diameter (1)
P. andrenoides vs. P. rudbeckiae
P. andrenoides - Head, distance between lateral ocelli versus distance from lateral ocelli to back of head, roughly EQUAL - Vertex and gena, sides of vertex and cheeks with rather coarse, close, and irregular pits, almost RUGOSE – Thorax, scutum, hair color, PALE, OBSCURE, and short – Abdomen, S6, with a deep, CIRCULAR, median emargination (1)
P. rudbeckiae - Head, distance between lateral ocelli GREATER than distance from lateral ocelli to back of head - Vertex and gena, sides of vertex and cheeks with sparse, fine pits, cheeks SHINING – Thorax, scutum, hair YELLOWISH and DENSE, although the surface of scutum can still be easily seen – Abdomen, S6, with a deep, NARROW, median emargination (1)
P. helianthi vs. all
DEFUALT option, choose this option first to select only well known species (14)
RARE bee, mark this option ONLY if you are having trouble resolving the guide (1)
P. illinoiensis vs. P. labrosiformis
P. illinoiensis - Head, face wider than long, NOT circular - Also, paroccular markings tend to extend up both the inner margin of both the eye and the side of the clypeus to the same level, making a triangle with the most acute angle directed down and located near the mandible base (1)
P. labrosiformis - Head, face CIRCULAR - Also, paroccular markings tend to extend much further up the inner margin of the eye than the side of the clypeus, making a triangle with the most acute angle directed up and located along the inner margin of the eye (1)
P. labrosus vs. P. rudbeckiae
P. labrosus - Head, lateral face markings, extending along inner eye to the level of the antennae, or very nearly so (1)
P. rudbeckiae - Head, lateral face markings, extending to a level just above upper margin of clypeus but below the level of the antennae (1)
P. rugosus vs. all
Head, vertex, a noticeable bump between each eye and the rear edge of vertex ABSENT, area normal, smoothly rounded from eye to back of head (14)
Head, vertex, a noticeable bump between each eye and the rear edge of vertex PRESENT (1)
State or province where bee was collected
KY (15)
DC (14)
DE (14)
IL (14)
IN (14)
MD (14)
NC (14)
OH (14)
PA (14)
SC (14)
TN (14)
VA (14)
WI (14)
WV (14)
CT (13)
GA (13)
MA (13)
MI (13)
NJ (13)
NY (13)
Ontario (13)
RI (13)
AL (10)
FL (10)
MS (10)
ME (4)
NH (4)
Quebec (4)
VT (4)
New Brunswick (2)
Nova Scotia (2)
Prince Edward Island (2)
Newfoundland and Labrador (1)
SD (1)
Thorax, scutum, pattern of pits in the upper half shoulder area, excluding the extreme margins
Pits distinct and REGULAR in shape, varying from small to medium sized, interpit spaces are SHINY and obvious (8)
Pits very SMALL, very dense, and of varying distinctness, interpit spaces either LACKING or quite small and DULL (5)
Pits LARGE, DEEP, ROUGH, and IRREGULAR in shape, interspaces SHINY (1)
Thorax, scutum, type of hair
Hair erect, standing straight up or nearly so, generally of medium length (6)
Hair suberrect, very short, appearing as if parted and combed away from the midline (6)
Lacking hair (3)