Basic steps:
  1. Answer one or more questions on right by clicking checkboxes. It's okay to check multiple boxes. Then click any 'search' button.
  2. Results appear on left. Click the 'simplify' button to get more questions.
  3. Repeat steps 1 and 2, narrowing down the possibilities.
  4. A 'COMPARE IMAGES' link appears on left when under 100 kinds match. Use this to compare kinds.
Click Restart to search again.
Click Guides to list other guides.
Click here if you're a new user.

Discover Life 15 kinds match:
Pseudopanurgus albitarsis  [popup] male
Pseudopanurgus andrenoides  [popup] male
Pseudopanurgus compositarum  [popup] male
Pseudopanurgus helianthi  [popup] male
Pseudopanurgus illinoiensis  [popup] male
Pseudopanurgus labrosiformis  [popup] male
Pseudopanurgus labrosus  [popup] male
Pseudopanurgus nebrascensis  [popup] male
Pseudopanurgus parvus  [popup] male
Pseudopanurgus passiflorae  [popup] male
Pseudopanurgus pauper  [popup] male
Pseudopanurgus rudbeckiae  [popup] male
Pseudopanurgus rugosus  [popup] male
Pseudopanurgus solidaginis  [popup] male
Pseudopanurgus virginicus  [popup] male


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 (9)
 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 (9)
 Only labral process more or less yellow, area to either side of the process black (8)
 Entirely BLACK (3)
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. parvus vs P. pauper - You will need to look at specimens under high magnifications
 P. parvus - Thorax, posterior third of scutum and scutellum, pitting is so dense that all pits overlap with no spaces inbetween - Abdomen, T1, region from slope facing the propodeum up to the edge of the impressed area along the rim, the density of pits is such that they all either touch or overlap without spaces inbetween (1)
 P. pauper - Thorax, posterior third of scutum and scutellum, pitting is very dense but small spaces clearly exist among the pits on both segments - Abdomen, T1, region from slope facing the propodeum up to the edge of the impressed area along the rim, the density of pits is often difficult to determine because the surface of the segment is textured and pattened such that it appears slightly pebbled, which could be confused with heavy pitting unless you look closely, pits are almost alway pressent but are vague and sparse with large and clear distances among the pits (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)
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)