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Discover Life 79 kinds match:
Nomada affabilis  [popup] male
Nomada agynia  [popup]
Nomada annulata  [popup] male
Nomada aquilarum  [popup] male
Nomada arizonica  [popup]
Nomada armatella  [popup] male
Nomada articulata  [popup] male
Nomada augustiana  [popup] male
Nomada australis  [popup] male
Nomada autumnalis  [popup] male
Nomada banksi  [popup] male
Nomada bethunei  [popup] male
Nomada beulahensis  [popup]
Nomada capillata  [popup]
Nomada ceanothi  [popup] male
Nomada coloradella  [popup]
Nomada composita  [popup] male
Nomada coquilletti  [popup]
Nomada cressonii  [popup] male
Nomada crucis  [popup]
Nomada crudelis  [popup] male
Nomada custeriana  [popup]
Nomada dentariae  [popup] male
Nomada denticulata  [popup] male
Nomada depressa  [popup] male
Nomada detrita  [popup]
Nomada dreisbachi  [popup] male
Nomada ednae  [popup]
Nomada edwardsii  [popup]
Nomada electa  [popup] male
Nomada electella  [popup] male
Nomada erigeronis  [popup] male
Nomada fervida  [popup] male
Nomada festiva  [popup] male
Nomada florilega  [popup] male
Nomada fragariae  [popup] male
Nomada gracilis  [popup] male
Nomada graenicheri  [popup] male
Nomada gutierreziae  [popup]
Nomada illinoensis  [popup] male
Nomada imbricata  [popup] male
Nomada integerrima  [popup] male
Nomada lehighensis  [popup] male
Nomada limata  [popup]
Nomada luteola  [popup] male
Nomada luteoloides  [popup] male
Nomada mendica  [popup]
Nomada micheneri  [popup] male
Nomada miniata  [popup] male
Nomada minima  [popup]
Nomada mutans  [popup]
Nomada near electa  [popup]
Nomada obliterata  [popup] male
Nomada parva  [popup] male
Nomada placida  [popup] male
Nomada proxima  [popup] male
Nomada pygmaea  [popup] male
Nomada rodecki  [popup] male
Nomada rubicunda  [popup] male
Nomada salicis  [popup] male
Nomada sayi  [popup] male
Nomada schwarzi  [popup]
Nomada seneciophila  [popup] male
Nomada snowii  [popup]
Nomada sobrina  [popup] male
Nomada sphaerogaster  [popup] male
Nomada sulphurata  [popup] male
Nomada superba  [popup] male
Nomada texana  [popup] male
Nomada tiftonensis  [popup] male
Nomada townesi  [popup] male
Nomada ulsterensis  [popup] male
Nomada utahensis  [popup]
Nomada valida  [popup] male
Nomada vegana  [popup] male
Nomada vexator  [popup]
Nomada vicina  [popup] male
Nomada vincta  [popup] male
Nomada xanthura  [popup]


REMAINING (number with state)
Abdomen, T1, presence and position of yellow markings
 None (34)
 A CONTINUOUS latitudinal band or stripe from side to side (30)
 2 widely spaced lateral PATCHES (25)
 A latitudinal band or stripe that is broken or INTERRUPTED in the center, sometimes by only a thin vertical line (25)
Abdomen, T2, presence and position of yellow markings
 A CONTINUOUS latitudinal band or stripe from side to side (42)
 A latitudinal band or stripe that is broken or INTERRUPTED in the center, sometimes by only a thin vertical line (40)
 2 widely spaced lateral PATCHES (23)
 NONE (1)
Abdomen, T3, presence and position of yellow markings
 A CONTINUOUS latitudinal band or stripe from side to side (43)
 A latitudinal band or stripe that is broken or INTERRUPTED in the center, sometimes by only a thin vertical line (39)
 2 widely spaced lateral PATCHES (30)
 NONE (6)
Abdomen, T4, presence and position of yellow markings
 A CONTINUOUS latitudinal band or stripe from side to side (53)
 A latitudinal band or stripe that is broken or INTERRUPTED in the center, sometimes by only a thin vertical line (37)
 2 widely spaced lateral PATCHES (23)
 NONE (12)
Abdomen, T5, presence and position of yellow markings
 A CONTINUOUS latitudinal band or stripe from side to side (57)
 A latitudinal band or stripe that is broken or INTERRUPTED in the center, sometimes by only a thin vertical line (31)
 2 widely spaced lateral PATCHES (19)
 NONE (12)
Abdomen, T6, presence and position of yellow markings
 Completely yellow or 1 or 2 patches (65)
 None (9)
Abdomen, pygidium, end
 Notched (53)
 Rounded or flat (25)
EXPERIENCED USERS - Tibia, hind leg, presence of small RED spine or setae like hairs at very end, look carefully for small ones hidden among the white hairs, be aware that there is always a triangular projection at the very end of the tibia that could be confusing
 Present (39)
 Absent (32)
Head, antenna, flagellar segment 1
 Length greater than breadth (60)
 Greatest width equal to or broader than greatest length (32)
Head, antenna, flagellar segment 1 versus 2 - measuring along each segments LONGEST side
 2 greater than 1 (51)
 1 greater than 2 (22)
 1 and 2 equal (9)
Head, antenna, flagellar segment 2 versus 3 - measuring along each segments LONGEST side
 2 greater than 3 (68)
 2 and 3 equal (15)
 3 greater than 2 (10)
Head, antenna, flagellar segment 3, presence of a very small, but distinct, sharp spine on the underside
 Absent (70)
 Present (7)
Head, antenna, flagellar segments 6 and 7
 Length longer than width (63)
 Width equal to or broader than length (20)
Head, cheek, rim edge that parallels the side of the eye
 Cheek ends smoothly without change in shape (60)
 Cheek ends with very edge of rim curled outward - carinate (30)
Head, clypeus, PRIMARY color
 Yellow (65)
 Black (12)
 White (3)
 Red or Orange (1)
Head, mandible, BIDENTATE, with distinct notched projection forming a tooth-like bump found less than one quarter the way from the tip on the upper side to the mandible
 Absent (69)
 Present - Bidentate species, note these species are currently not included in the guide as they their identification is in turmoil, you should morphotype your collection based on morphological rather than color differences (2)
Head, supraclypeus, PRIMARY color
 Yellow (48)
 Black (47)
 Red or Orange (9)
 White (2)
IMPORTANT - Please Click Here to Remove Provisional Western Species
 NOT recommended - Include some provisional western species (72)
 RECOMMENDED - Eastern Nomada ONLY (63)
Males that Sam thinks are not likely valid species - N. autumnalis, N. capillata, N. ceanothi, N. dreisbachi, N. minima, N. salicis, N. sobrina, N. townesi, N. ulsterensis
 RECOMMENDED - Click here to eliminate these species from the system (69)
 Display these species (10)
N. affabilis, N. superba, N. vincta
 N. affabilis - Thorax, propodeum, rear face, with YELLOW PATCHES - Head, scape, widest at the top and of normal shape - Leg, tibial setae, 15 or more BUNCHED together (1)
 N. superba - Thorax, propodeum, color, ENTIRELY BLACK - Head, scape widest at the top and of normal shape - Leg, tibial setae, 15 or more BUNCHED together (1)
 N. vincta - All tergites usually with complete yellow stripes, tibia of rear leg with 5 - 8 short reddish setae spaced out in a single row along the rim, bright yellow markings (1)
 N. vincta - Thorax, propodeum, rear face, with YELLOW PATCHES - Head, scape, widest about two-thirds of the way to the top, BULBOUS - Leg, tibial setae, 10 or fewer SHORT setae set in a ROW (1)
N. annulata, N. fervida, N. vincta
 N. annulata - Abdomen, all tergites, with continuous stripes of yellow - Hind leg, tibia, with one or two short yellow setae at apical end, bright yellow markings (1)
 N. fervida - Florida populations - Abdomen, usually only T1 and T2, with complete yellow stripes, the remaining tergites more variable, from no stripe to complete stripe - Hing leg, tibia, with 20 or more short setae touching one another in a TIGHT BUNCH at the apical end, yellow markings with a dark orange hue - Great Lakes populations - Formerly known as N. wisconsinensis - Abdomen, all tergites, usually thin yellow stipes - Hind leg, tibia, with 20 or more short setae touching one another in a TIGHT BUNCH at the apical end, yellow markings (1)
 N. vincta - Abdomen, all tergites, usually with complete yellow stripes - Hind leg, tibia, with 5 - 8 short REDDISH setae spaced out in a SINGLE ROW along the rim, bright yellow markings (1)
N. annulata. N. cressonii, N. pygmaea, N. illinoensis, N. sayi vs. others - NOTE - These species are very common and often very confusing, so expect some specimens to not match any of these categories
 Others - DOUBLE CHECK your work - Many other species look similar, so look VERY closely at the tibial setae, all males faintly echo the setae of the females but are less stout and lighter in color and consequently are often EXTREMELY difficult to detect without a lot of practice - In this group you will see, again, with practice, a series of longer white setae about the same thickness as the rest of the hairs protruding from the surrounding hairs and decending in length - Also, look for body SIZE differences and differences in the OVERALL COLOR and SHAPE as further clues - The author still finds a fair number of specimens that have the general characters of the above species, but do not exactly match the patterns given here, those it is best to leave LABELED as Nomada sp. (47)
 N. illinoensis and N. sayi - In direct comparison the smallest species and often confused with N. parva - In comparison, the mandibles are thin and slightly elongate - Thorax, scutum, often all black, but individuals with extensive red exist too - Abdomen, T3 and usually T2, with yellow marks separated in the center by MORE THAN the width of these marks and NOT extending to the other tergites except rarely as small marks or relatively indistinct smudges - Note - The author is currently unsure if there are real differences between the two described species (2)
 N. cressonii - In direct comparison, the LARGEST species - In direct comparison, the mandibles are STOUT - T2-6 almost always with yellow markings - The marks on T2-3 usually come CLOSE TO TOUCHING in the center, but there is always at least a line separating the two sections - T2 always separated by less than the width of the yellow mark apart - Scutum, scutellum, metanotum, and rear face of propodeum almost always extensively red, in particular the scutellum appears to always be COMPLETELY RED without a notch or break along the midline, but at times with a black border along the suture with the scutum (1)
 N. pygmaea - In direct comparison, INTERMEDIATE between the other two species with plenty of overlap - Mandibles comparatively STOUT and the primary way of differentiating this species from N. sayi and N. illinoensis - The absence of anything more than a smudgy orange spot on S6 differentiates this species from N. cressonii, BUT in a FEW heavily marked individuals this spot will be present and differentiating from N. cressonii can only be done by inspecting and comparing a series of both - Scutum often all black but regularly almost completely red - T2- T3 always with strong yellow markings laterally can come close to touching in the center, but always with at least a line separating the two sections, T4-6 may or may not have yellow markings, if present, they tend to be less extensive than in N. cressonii - Scutellum often either completely black or with red patches laterally or the red being divided by black in the center, these specimens can be differentiated from N. cressonii, however, some do have all red on the scutellum and other characters have to be used (1)
N. aquilarum vs. N. placida
 N. aquilarum - Head, clypeus, markings, upper half or two-thirds BLACK with the rim area white or off-white (1)
 N. placida - Head, clypeus, markings, almost entirely YELLOW, except for the uppermost margin which may be black (1)
N. armatella, N. augustiana, N. bethunei
 N. armatella - Head, scape widest at the top - Thorax, scutellum, appearance, VASE SHAPED, usually all YELLOW - Propodeum, rear, USUALLY primarily BLACK with, at times, small red or yellow marks about half way between the lower edge of the propodeal triangle and the rear coxa, - Hind leg, tibial setae, with thicker CLEAR WHITE setae on the apex of the hind tibia that clearly EXTEND beyond the surrounding white hairs, although the most definitive character, often difficult to detect since these setae are often not much thicker than the surrounding hairs and can be very difficult to see (1)
 N. augustiana - Head, scape, widest at the top - Thorax, scutellum, yellow on the upper surface fading to red on the lower - Metanotum, red or black - Propodeum, VASE SHAPED, rear face primarily a mix of yellow and red - Hind leg, tibial setae, 4-6 WHITE CLEAR setae clearly EXTENDING beyond the surrounding white hairs (1)
 N. bethunei - Head, scape, slightly wider about one third to one half of the way down from the top - Thorax, scutellum, USUALLY all RED - Propodeum, rear face, USUALLY with extensive RED and sometimes yellow markings - Hind leg, tibial setae, always SHORTER than surrounding white hairs, fairly THICK, and often but not always tinted RED (1)
N. articulata vs. N. australis
 N. articulata - Head, antennae, orient the antennal segments so that the FLAT underside is facing down and you are looking at those segments with the OUTSIDE EDGE facing you, you will notice that the faces of the underside and the outside side form an edge and towards the distal portion of that edge the integument is either NOT ALTERED at all or only forms an OBTUSE rounded bump, nothing you would call remotely sharp - NOTE - Differentiation between species is clear only if the antenna is viewed as described - Thorax, scutum, USUALLY with at least some RED markings but SOMETIMES entirely black (1)
 N. australis - Head, antennae, orient the antennal segments so that the FLAT underside is facing down and you are looking at those segments with the OUTSIDE EDGE facing you, you will notice that the faces of the underside and the outside side form an edge and towards the distal portion of that edge the integument is pulled downward forming a SHARP POINT, something not quite as pointed as the spine on T3 but acute and noticable - NOTE - Differentiation between species is clear only if the antenna is viewed as described - Thorax, scutum, color, ALWAYS BLACK (1)
N. banksi, N. composita, N. gracilis, N. valida, N. vicina, N. xanthura
 N. banksi - Thorax, mesepisturnum, center front, with SMALL OBLONG YELLOW mark - Scutellum, coloration, entirely black or with small yellow or orange marks, or at least a small amount of dark red - Abdomen, T2-T6, yellow markings, vary from patches on the sides, to stripes only slightly separated in the middle, to complete stripes on the apical segments - Head, clypeus, ENTIRELY YELLOW - Season, late SUMMER to FALL (1)
 N. composita - General description - Thorax, ENTIRELY BLACK, but with some specimens from the southern Appalachians with dark red on the scutellum, scutum, or a small patch of color on the front of the mesepisturnum - Abdomen, background color, very dark to NEAR BLACK- No clear yellow markings on the sternites, though there can be pale orangish colorations - T3-4 almost always with simple bright yellow ovals along the lateral edges of the segment, T5 may be oval or linear in configuration - Season, often one of the earliest SPRING species (1)
 N. gracilis - Thorax, entirely black, but there is always the possibility that some specimens may show some dark red on the scutellum or a small patch of color on the front of the mesepisturnum - Abdomen, background color, very dark to near black, not like the reds of most species - S2-5 usually with linear, latidinal yellow lines across the segement - T3-5 usually with latitudinally thin yellow marks, though these may be broken and incomplete in some specimens - Season, usually a mid to late SPRING species (1)
 N. valida - Note the male in this species has not been adequately described and thus the male will not differentiate from N. composita or N. gracilis - General Description, thorax, entirely black, with perhaps some specimens showing dark red on the scutellum or a small patch of color on the front of the mesepisturnum - Abdomen, background color, very dark to near black - A far northern species - season SPRING (1)
 N. vicina - Thorax, mesepisturnum, center front, with a small ORANGE-RED OBLONG mark - Scutellum, color, DARK RED - Abdomen, T2-T6, yellow markings, vary from patches on the sides to stripes only slightly separated in the middle, to complete stripes on the apical segments - Head, clypeus, coloring, largely BLACK with only the rim being yellow - Season, late SUMMER to FALL (1)
 N. xanthura - Thorax, largely black, but there appears to always a small linear patch of yellow on the front of the mesepisturnum and some dark red on the scutellum, a few specimens have red on the sides of the scutum - Abdomen, background color, in direct comparison to other Nomada, very dark to near black, not like the reds of most species - S2-5 appears to be completely dark thought it is perhaps possible that some populations may have yellow marks - T2-5 with either thick complete bands of yellow or these bands broken in the middle by a thin red longitudingal line - The yellow on T5 does not extend to the far lateral edges of the tergite as is the case in many other species - Season, usually a mid to late SPRING species (1)
N. composita vs. N. integerrima
 N. composita - Head, antennae, flagellar segment 2, clearly much LARGER than either 1 or 3 - Abdomen, pygidium, clearly and obviously NOTCHED at the tip - Sternal plates, largely BLACK to very dark brown - Size, clearly larger, in comparison with N. integerrima (1)
 N. integerrima - Head, antennae, flagellar segments 1-3, all roughly EQUAL - Abdomen, pygidium, usually appearing TRUNCATE or slightly rounded out at the tip, at best only minutely notched - Sternal plates, appear ORANGISH-RED - Size, clearly smaller, in comparison with N. composita (1)
N. denticulata vs. all others
 Head, underside of antennal segments 5-8, typical pattern of most bees with, at most, each segement slightly concave or slightly convex (57)
 Head, underside of antennal segments 5-8, underside strongly and OBVIOUSLY CONCAVE with slightly projecting, built-up areas on the basal and apical ends of each segments central hollow area, best detected by looking at the outer sides of these segments    (1)
N. detrita and N. obliterata vs. all others
 Front wing, number of submarginal cells equals 3 (66)
 Front wing, number of submarginal cells equals 2 (2)
N. electa vs N. near electa, an undescribed species from Florida
 N. electa - Yellow at the base of the mandible extending over half way to the tip and to, or nearly to, the base of the typical red area at the end of the mandible - In direct comparison, the mandible is stouter - A wide yellow marking extends from the base of the mandible and runs about one quarter to one third of the way along the border of the eye along the cheek - Antennal segments F1 and F2 with scattered, noticeable apically pointing setae arising from the apical ends of the underside, these setae about 2x as long as the other hairs - Spine-like setae on the apical end of hind tibiae clearly visible, dark red, thick, 5-8, and shorter than the surrounding hairs - Hind tibiae with yellow markings at the basal and apical ends and connected together via a narrow line along the outer face - Rear face of the propodeum entirely black - In direct comparison, the tegula is larger - Primarily found in the New England to Northern Mid-Atlantic region (1)
 N. near electa - Yellow at the base of the mandible extending only about one third of the way to the tip - In direct comparison, the mandibles are more slender - There is no yellow mark running along the eye near the base of the mandible, but, at times there is a slight orange smudge near the mandible base - Antennal segments F1 and F2 with only slightly longer apically pointing setae arising from the apical ends of the underside, these setae only slightly longer than the surrounding hairs - Spine-like setae on apical end of hind tibiae NOT clearly visible, thin, difficult to differentiate from surrounding hairs, 2-4 and about as long as the surrounding hairs - Hind tibiae with no yellow markings - An orange-red line extends along the rear face of the propodeum near to and paralleling the border with the lateral face - In direct comparison, the tegula is smaller - Found only in Florida so far (1)
N. fervida, N. vegana, N. texana, N. tiftonensis
 N. texana and N. tiftonensis - Thorax, propodeum, all BLACK, yellow markings a bright yellow - Scutellum, usually broken into 2 SQUARE YELLOW PATCHES, with NO or only a slight median cleft - Abdomen, T2, with a stripe that is NARROWED in the center by 1/3 or greater than the lateral sections - Size, smaller in comparison with N. fervida and N. vegana - Distribution, found throughout the East (2)
 N. fervida - Thorax, propodeum, all BLACK, yellow markings usually slightly orange-brown in Florida - Scutellum, usually a contiguous two blocks of YELLOW surrounded by ORANGE without a break in the center, but can have limited to no orange and just appear as two sections of yellow separated by black, center deeply cleft longitudinally - Abdomen, T2, with a WIDE STRIPE that is only slightly narrowed in the center - Size, larger, in comparison with N. vegana and N. texana - Distribution, centered in the Deep South and the Great Lakes sand areas - Tibia, hind, apical end with approximately 20 orangish stubby setae visible at high magnfication (1)
 N. vegana - Thorax, propodeum, with LARGE YELLOW PATCHES (1)
N. fragariae, N. imbricata, N. luteola, N. luteoloides, N. sulphurata
 N. fragariae - Head, antennae, last segment, at the very apex of the much lighter colored upper surface, approximately along the centerline of the segment or only slightly shifted towards the outside of that imaginary medial line, with an additional 3-7 setae that PROJECT OUT from that surface beyond the tip - NOTE - While microscopic, these setae are distinct, and unique to this species, under high power and much larger than the small, appressed hairs that dot the surface, but DIFFICULT to determine without a lot of experience - Flagellar segment 1, length, variable, but usually about HALF of the 2nd flagellar segment length - All flagellar segments, upper surface, YELLOW-BROWN - Thorax, scutum, entire sides usually with a narrow, but sometimes faint, BORDER OF YELLOW - Propodeum, rear face, separate YELLOW PATCHES varying from 3 to, rarely, 0, usually one set above the hind coxae, one on the sides of the propodeal triangle, and often a fainter one inbetween - Mesepisternum, small round mound at the top, usually with a very faint YELLOW MARK - Mesepisternum, with a yellow stripe in the center running from the front to the rear - Rear leg, tibial setae, 4-8, EVENLY SPACED out following the rim itself, which is unique, and usually just a bit longer than the surrounding white hairs, usually difficult to see as they blend into the hairs behind them (1)
 N. imbricata - Head, antennae, flagellar segment 1, length, clearly more than half the length of 2nd flagellar segment - Last flagellar segment, with NO setae projecting beyond the tip - Hind leg, tibial setae, mostly 2-3 setae - NOTE - Tibial setae characters are difficult to determine without a lot of experience - Middle leg, femur, with hairs LESS than one quarter the width of the femur - Thorax, scutum, small narrow STRIP OF YELLOW along the sides, VARIABLE, often limited to the area rear of the tegula, but can extend along the entire side or, also commonly, be completely absent - Abdomen, T4, darkly translucent rim, longitudinal width, usually equal to or LESS than the width of the yellow stripe that runs from side to side basal to it, but not always - Entire thorax, yellow markings, VARIES from none to extensive markings, even on the scutum - Most often confused with N. luteoloides, but tends to come out later in the season (1)
 N. luteola - Head, antennae, flagellar segment 1, half or less the length of the 2nd flagellar segment - Last flagellar segment, with NO setae projecting beyond the tip - All segments, upper surface, BROWN to dark brown - Hind legs, tibial setae, mostly 5-7, short and fat, NOT extending beyond the nearby white hairs - NOTE - Tibial setae characters are difficult to determine without a lot of experience - Thorax, propodeum, rear face, EXTENSIVE YELLOW that runs into the propodeal triangle, something that rarely happens on the other species - Mesepisternum, small round mound at the top, usually completely YELLOW, other species usually with only a restricted amount or none at all - Scutum, NO yellow - Head, cheek, far more stongly carinate in comparison with other Nomada species - Most often confused with N. sulphurata (1)
 N. luteoloides - Head, antennae, length of flagellar segment 1, clearly more than half the length of 2nd flagellar segment - Last flagellar segment, with NO setae projecting beyond the tip - Hind leg, tibial setae, mostly 2-3 setae - NOTE - Tibial setae characters are difficult to determine without a lot of experience - Middle leg, femur, hairs on the bottom longer than one quarter of the width of the femur, this character is the most consistent way to separate from N. imbricata - Abdomen, T4, dark transluscent rim, longitudinally wider than the yellow stripe running from side to side just interior or basal to the transluscent rim - Thorax, yellow markings, VARIABLE, from none to extensive but ALMOST never with yellow on the scutum - Most often confused with N. imbricata (1)
 N. sulphurata - Head, antennae, flagellar segment 1, length half or less the length of the 2nd flagellar segment - Last flagellar segment, with NO setae projjecting beyond tip - All flagellar segments, upper surface, nearly BLACK - Hind leg, tibial setae, mostly 5-7, stout, normally clear yellow to orangish, and usually just short in height of the surrounding white hairs - NOTE - Tibial setae characters are difficult to determine without a lot of experience - Thorax, propodeum, rear face, yellow often restricted to YELLOW OVALS above the rear coxa, but also can have spots within the propodeal triangle - Scutum, with NO yellow - Mesepisternum, small round mound at the top, usually with an small oblong YELLOW MARK, but that can be variable - Most often confused with N. luteola (1)
N. parva vs Other small species with thin long white tibial setae
 Others - Most other species are at least slightly larger, but there is enough overlap that size alone cannot be used - As far as we know, no other species have the yellow marking on the hind tibiae, the tibia being uniformly colored an orangish-yellow-brown - Most, but not all, other species also do not have the darkened integument on the tergites - There is also a tendency for the antennal segments of other species to be slightly longer, again, not a trustworthy (5)
 N. parva - Usually the smallest species in any region, but there is overlap with other species - Hind tibia with a THIN YELLOW BORDER OR LINE running down the rear edge, this mark is sometimes broken or interrupted in the center of the tibia but usually is complete, noticeably different from the orangish brown background of the segment - Markings on the tergites light yellow and the borders of those markings are often relatively indistinct, almost always only occurring only laterally on T2-T4, T5 may have latitudinally extended lateral marks which, in some specimens, may become a complete line across the segment, T6 almost always with a large yellow marking across the segment, bases of T3-5 with noticeable lateral band of darkened integument , not completely black, but dark and with the edges blending indistinctly into the normal red-orange integument, T2 does not have this dark area, other species USUALLY do not have this character, but some do - Scutum and propodeum all black - Scuttellum black but at times with two red spots, these dots often minute - Usually only has a small patch of pale yellow on the lower anterior face of the mesepisturnum (1)
N. texana vs N. tiftonensis
 N. texana - S3 and S4 with narrow ivory or pale yellow transverse bands - T3 with an uninterrupted latitudinally transverse yellow band - See N. texana species page for additional details on differentiating (1)
 N. tiftonensis - S3 and S4 entirely black, lacking any markings - T3 normally with a widely interrupted latitudinally transverse yellow band...in rare instances these may be slightly connected - See N. texana species page for additional details on differentiating (1)
N. utahensis vs N. vincta - Based on a small number of specimens
 N. utahensis - Scape not clearly swollen, similar to other Nomada species, approximately 1.25 to 1.5 times the width of the flagellar segments - In direct comparison, yellow on thorax more extensive, lateral sides of scutum lined with yellow, axillae yellow, scutellum and metanotum almost entirely yellow, rear face of propodeum almost completley yellow on either side of propodeal, triangle yellow on mesepisturnum runs from the anterior edge and extends as a band nearly to the metepisturnum, yellow dot present on mound on mesepisturnm below tegula - Bands of yellow on T2-4 WIDE, wider than the band of dark integument lining the rim - Sternites with more extensive yellow, S6 with yellow - Mostly Rocky Mountains (1)
 N. vincta - Scape clearly swollen, approximately twice the width of the flagellar segments - In direct comparison, yellow on thorax more extensive, scutum with NO YELLOW, axillae with NO YELLOW, scutellum and metanotum usually with a band of dark integument running up medially, rear face of propodeum with extensive amounts of yellow but only partially yellow on either side of propodeal, triangle yellow on mesepisturnum runs from the anterior edge and extends as a band nearly to the metepisturnum, yellow dot present on mound on mesepisturnm below tegula - Bands of yellow on T2-4 NARROW, narrower than the band of dark integument lining the rim - Sternites with less extensive yellow, S6 and at times S5 all dark - Mostly Eastern and Central Plains and now RARE (1)
Species for which only females are described - N. crudelis, N. electella, N. festiva, N. florilega, N. micheneri, N. miniata, N. sphaerogaster
 RECOMMENDED - Click here to eliminate these species from the system (70)
 Display these species (6)
Specimens Sam still needs to find and score - N. capillata, N. salicis, N. townesi
 RECOMMENDED - Click here to eliminate these species from the system (76)
 Display these species (2)
State or province where bee was collected
 NC (41)
 NJ (41)
 OH (41)
 PA (41)
 DC (40)
 IL (40)
 TN (40)
 VA (40)
 WI (40)
 DE (39)
 IN (39)
 MD (39)
 KY (38)
 MI (38)
 NY (38)
 Ontario (38)
 WV (38)
 SC (37)
 CT (34)
 GA (34)
 MA (34)
 RI (32)
 ME (29)
 NH (29)
 VT (29)
 AL (27)
 FL (26)
 MS (23)
 Quebec (17)
 Nova Scotia (16)
 Western (13)
 Prince Edward Island (12)
 New Brunswick (11)
 Newfoundland and Labrador (3)
Thorax, front leg, coxa, presence of a spine near where coxa joins trochanter, spine points back towards abdomen - note this spine is almost always large, but cloaked in hairs and can be difficult to see, if in doubt use a pin to confirm that a spine is there
 No spine - the majority of species (55)
 Long spine about 1/3 or more the length of the coxa (13)
 Short triangular spine less than 1/4 the length of the coxa (10)
Thorax, mesepisturnum, which is the plate below front wing, PRIMARY color
 Black (63)
 Yellow (26)
 Red (15)
Thorax, propodeum, rear face, PRIMARY color
 Black (67)
 Yellow (15)
 Red (8)
Thorax, scutellum, PRIMARY color
 Yellow (40)
 Black (38)
 Red (26)
 White (4)
Thorax, scutum, PRIMARY color
 Black (66)
 Red (13)
Time of year
 June-July (49)
 May or earlier (42)
 August or later (15)