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Discover Life 33 kinds match:
Agapostemon viequesensis  [popup]
Agapostemon krugii...
Anthophora tricolor  [popup]
Andrena nigrita...
Apis mellifera  [popup]
Augochlora buscki  [popup]
Centris decolorata  [popup]
Centris haemorrhoidalis  [popup]
Apis haemorrhoidalis...
Centris lanipes  [popup]
Apis lanipes
Centris smithii  [popup]
Centris apicalis
Coelioxys abdominalis  [popup]
Coelioxys apicata  [popup]
Coelioxys spinosa  [popup]
Exomalopsis analis  [popup]
Exomalopsis villipes...
Exomalopsis bahamica  [popup]
Exomalopsis pulchella  [popup]
Exomalopsis similis  [popup]
Apis globosa...
Florilegus lanierii  [popup]
Melissodes condigna...
Lasioglossum busckiellum  [popup]
Halictus busckiellus
Lasioglossum eickwortellum  [popup]
Habralictellus eickwortellus
Lasioglossum ferrerii  [popup]
Chloralictus ferrerii...
Lasioglossum gundlachii  [popup]
Chloralictus ferrerii
Lasioglossum mestrei  [popup]
Chloralictus mestrei...
Lasioglossum parvum  [popup]
Panurgus parvus
Lasioglossum rufopantex  [popup]
Habralictellus rufopanticis
Megachile concinna  [popup]
Megachile multidens
Megachile holosericea  [popup]
Apis holosericea
Megachile lanata  [popup]
Apis lanata...
Megachile rufipennis  [popup]
Apis rufipennis...
Melissodes trifasciata  [popup]
Melissodes insularis
Nesosphecodes anthracinus  [popup]
Nomada krugii  [popup]
Nomada pilipes  [popup]
Xeromelecta tibialis  [popup]
Crocisa pantalon...
Xylocopa mordax  [popup]


REMAINING (number with state)
Agapostomen vs Augochlora
 Agapostemon - Rear face of propodeum CIRCLED or bordered by a clearly defined raised line or carina, creating the appearance of a shield which has transverse striations throughout (1)
 Other selected genera - Rear face of propodeum not surrounded by a clearly defined raised line, but instead rounding over and integrating smoothly into the lateral faces of the propodeum, does not have distinct transverse striations (1)
Anthophorini vs Melectini
 Anthophorini Forewing, marginal cell tip narrowly rounded or pointed, the tip located within a few vein widths of the edge or margin of the wing - Hindwing, vein cu-v shorter than the second abscissa of M Cu or sometimes about equal - FEMALE S6 variable, but virtually never extending past T6 such that it is visible from above, appearing relatively flat and NOT tubular around the sting Labrum usually broader than long, only uncommonly as long as broad (1)
 Melectini - Cleptoparasitic bees - Forewing, marginal cell broadly rounded apically, the tip usually located along the mid-line of the marginal cell and thus quite a distance away from the edge or margin of the wing, the tip usually only slightly extending past the last submarginal cell, if at all - Hindwing, second abscissa of M Cu shorter than cu-v - FEMALE S6 surpassing T6 and visible from above, taking the form of a sheath which at least partially envelops the sting - The thorax and abdomen is often patterned by very dense, light-colored appressed hairs throughout - Labrum nearly always longer than broad, although sometimes may appear about as broad as long (1)
Anthophorula vs Exomalopsis
 Exomalopsis - MALE clypeus BLACK - FEMALE basitibial plate LARGER in direct comparison, often appearing to have a raised ridge running around its perimeter that encircles an area of denser hair (4)
 Anthophorula - MALE clypeus marked with YELLOW OR WHITE - FEMALE basitibial plate SMALLER in direct comparison, appearing flat without a raised margin and with less hair centrally, if this is not the case and there is no central bare area then there is no transverse carina on T1 near its base (1)
Apis vs MALE Eulonchopria vs Meliponini vs All others
 Others - Rear leg tibial spurs PRESENT (32)
 Apis - Absent - Eyes hairy - Marginal cell complete (1)
Augochlorini vs other Halictid genera - Female, abdomen, T5, presence of a longitudinal medial slit originating on the rim
 Other genera - Distinct slit ABSENT, but sometimes very slightly emarginate nonetheless (9)
 Augochlorini - Present and the slit equal to at least a third of the longitudinal length of the segment - Note that the slit can often be obscured by hairs, although a pin may be used to move these hairs aside for a better view if necessary (1)
Click here to choose the groups of genera to include in the guide
 ADMIN ONLY - ALL (33)
 Caribbean islands, not including Trinidad/Tobago - Under development, use with caution - Click here for ALL genera found in the Caribbean (33)
 Eastern United States and Canada ONLY - Click here for the genera found East of the Mississippi (30)
 Mexico - Caution, this area is under development, some genera still need to be added and some unresolved groups may occur - Please report any discrepancies, as limited specimens were available for some groups - Click here for ALL genera found in Mexico (30)
 United States and Canada - Click here for ALL genera found in the entire US and Canada (30)
 United Kingdom - Under development but usable with caution (18)
Exomalopsis and Anthophorula vs selected other genera
 Exomalopsis and Anthophorula -Length of stigma 3 or MORE times as long as the length of the prestigma, except in some Exomalopsis in which the wing tip end of marginal cell is bent abruptly away from wing margin (4)
 Others - Length of stigma LESS than 3 times as long as the length of the prestigma - Wing tip end of marginal cell gradually bent away from wing margin (2)
Female, Melissodes vs selected other genera
 Melissodes, tegula narrowed towards front, outer front margin flattened, slightly concave or straight - note that hairs often have to be scraped away in order to see this feature (1)
 Others, tegula not narrowed towards front, outer front margin rounded, convex (1)
Female, head, face, presence of NON-METALLIC white, yellow, or red surface markings on the integument when NOT INCLUDING the antennae, labrum or mandibles
 Absent (31)
 Present (15)
Female, hindleg, tibia, presence or absence of a corbicula
 Absent, hind tibia either with hairs throughout its outer surface or without hairs but not broadly flattened with long hairs around the perimeter (32)
 Present, the outer face of the rear tibia appearing broadly flattened and HAIRLESS, usually with long hairs around the perimeter of the hairless area (1)
Female, leg, pollen carrying hairs, location - Note, lots of variability in density and type of pollen carrying hairs, can be tricky to determine, see explain for details
 ADMIN ONLY - ALL (33)
 On tibia (21)
 No scopa present (14)
 On femur (9)
 Underside of abdomen (4)
Head, compound eyes, presence or absence of scattered and obvious hairs
 Absent (28)
 Present (8)
Head, labrum, shape - Note that the extent of the labrum can be hidden by the mandibles when closed
 Broader than long (10)
 Longer than broad (1)
Head, mouthparts, long-tongue vs short-tongue bees - A very useful character but often unusable if the mouthparts are not visible
 Long-tongue bees - On the labial palpus the first two segments are elongate and usually at least somewhat flattened, contrasting with the much smaller and less flattened terminal segments of the palpus, these terminal segments often pointed laterally in repose, such that they usually form an angle around 90 degrees or sometimes less - The stipital comb, a comb of hairs located near the apex of the stipes that is found within a slight concavity, is usually, but not always, present - Galeal comb absent or, rarely, very weak - Galeal blade normally elongate, most often equal or greater than the stipes in terms of length (23)
 Short-tongue bees - On the labial palpus the four segments are usually of similar size, although sometimes the first segment may be elongate and VERY rarely the second segment may be as well, in these cases the segments are not flattened as greatly as in the long-tongue bees - Stipital comb and concavity ALWAYS absent - Galeal comb commonly present - Galeal blade usually distinctly shorter than stipes (10)
Lasioglossum vs Nesosphecodes
 Lasioglossum - Wing venation distinctly weakened in at least the third transcubital vein, often in the second transcubital vein as well, the weakened vein appearing to be a single line when viewed under 20X or greater power (7)
 Nesosphecodes - Wing venation equally strong in all three transcubital veins, these veins each appearing, at 20X or greater power, to be composed of 2 lines (1)
Leg, arolium - A pad-like structure that rests between the two claws
 Present - although sometimes minute and usually also associated with long hairs (22)
 Absent - look closely, while there may be no pad there is often a clump of hairs present (12)
Length of FEMALE bee - Use With Caution, measurements taken directly from Mitchell, your measurements may differ from his
 9 (32)
 10 (28)
 11 (26)
 12 (26)
 8 (25)
 6 (24)
 7 (24)
 13 (20)
 14 (19)
 15 (18)
 16 (18)
 17 (14)
 4 (13)
 5 (13)
 18 (12)
 3 (9)
 19 (7)
 2 (7)
 20 (6)
 21 (5)
 22 (5)
 23 (1)
 24 (1)
 25 (1)
Length of MALE bee - Use With Caution, measurements taken directly from Mitchell, your measurements may differ from his
 9 (31)
 8 (27)
 10 (26)
 7 (26)
 11 (25)
 6 (23)
 5 (21)
 12 (19)
 13 (19)
 14 (19)
 15 (16)
 4 (14)
 3 (13)
 16 (11)
 2 (9)
 17 (8)
 18 (4)
 19 (2)
 20 (1)
 21 (1)
 22 (1)
 23 (1)
Male, Agapostemon vs selected other genera
 Others - Thorax and head nonmetallic or weakly metallic greenish or bluish, at times mixed with gold or brass overtones (7)
 Agapostemon - Thorax and head bright green or blue (1)
Male, Florilegus vs other genera
 Florilegus, underside of 6th abdominal segment with a prominent raised area in the middle of the plate. front femur broadest about one-fourth or one-third of its length from apex (1)
 Others, underside of 6th abdominal segment flat or with an exceedingly shallow, longitudinal median depression. front femur broadest from base to middle (1)
Male, abdomen, T7
 Without lateral teeth - Occasionally S6 with lateral teeth that can be seen from above and may be confused (7)
 With lateral tooth or strong projecting angle on each side of the pygidial plate, if it is present - Note, sometimes hidden in dense hair or by the 6th segment (2)
Male, head, face, presence of NON-METALLIC white, yellow, or red surface markings on the integument when NOT INCLUDING the antennae, labrum or mandibles
 Absent (28)
 Present (19)
Male, wing, first recurrent vein
 Meeting second submarginal cell or intersecting with the second transverse cubital vein (9)
 Meeting the third submarginal cell (1)
Megachilidae only - Head, vertex, presence of carina on the preoccipital margin
 ABSENT, the vertex appearing smoothly ROUNDED all the way to the rim (7)
 PRESENT, the vertex having an abrupt RIDGE along the back of the head which runs along most or all of the posterior rim of the head (3)
Megachilidae only - Rear legs, coxae, presence of a longitudinal carina
 Absent, the coxae are evenly rounded over (4)
 Present, there is a ridge running along the length of the coxae such that it appears divided (3)
Mexalictus vs. Lasioglossum and Agapostemon
 Lasioglossum-Distal veins in forewing WEAK and body often with basal hairs bands, female with inner hind tibial spur pectinate with a few large teeth, male with F2 of antenna longer than F1 and S7 with one apodeme on each side with a median apical projection, distributed throughout US (7)
 Agapostemon-Body brightly metallic green at least in part and males with yellow markings, distributed throughout US (1)
Optional shortcuts - Bee family - Click on family, click search, then click simplify to create new smaller guide just for that family
 ADMIN ONLY - ALL (33)
 Apidae (16)
 Halictidae (10)
 Megachilidae (7)
Optional shortcuts - Click on group, click search, then click simplify to create new smaller guide just for the members of that group
 ADMIN ONLY - ALL (33)
 Halictinae-Halictini (9)
 Megachilinae-Lithurgini, Megachilini, Dioxyini (7)
 Apinae-Centridini (4)
 Apinae-Exomalopsini (4)
 Apinae-Eucerini (2)
 Nomadinae (2)
 Apinae-Anthophorini (1)
 Apinae-Apini (1)
 Apinae-Melectini (1)
 Halictinae-Augochlorini (1)
 Xylocopinae (1)
SECONDARY CHARACTER FOR EXPERIENCED USERS - Wing, marginal cell, tip shape AND location of the tip - NOTE, this is a key character, read BOTH sections COMPLETELY and CAREFULLY
 Rounded, squared-off, OR OR OR - pay attention this occurs a lot - if pointed then point 3 or more vein widths from margin of wing (19)
 Pointed, with point laying right on margin of wing OR OR OR if bent away from margin or squared off then tip less than 3 vein widths from margin (11)
State or province where bee was collected
 ADMIN ONLY - ALL (33)
 Puerto Rico (33)
 Cuba (16)
 Jamaica (12)
 Bahamas (7)
 Montserrat (7)
 Guadeloupe (6)
 Haiti (6)
 Saint Vincent and Grenadines (6)
 Veracruz (6)
 Dominica (5)
 FL (5)
 Oaxaca (5)
 TX (5)
 Chiapas (4)
 Dominican Republic (4)
 Jalisco (4)
 Morelos (4)
 San Luis Potosi (4)
 Aguascalientes (3)
 Grenada (3)
 Guerrero (3)
 Hidalgo (3)
 MT (3)
 Michoacan (3)
 Nayarit (3)
 PA (3)
 Puebla (3)
 Quintana Roo (3)
 Sinaloa (3)
 Sonora (3)
 Tabasco (3)
 Tamaulipas (3)
 Tlaxcala (3)
 Yucatan (3)
 AL (2)
 AR (2)
 AZ (2)
 Baja California (2)
 Baja California Sur (2)
 Barbados (2)
 British Columbia (2)
 CA (2)
 CO (2)
 CT (2)
 Campeche (2)
 Chihuahua (2)
 Coahuila (2)
 Colima (2)
 DC (2)
 DE (2)
 Durango (2)
 GA (2)
 Guanajuato (2)
 IA (2)
 ID (2)
 IL (2)
 IN (2)
 KS (2)
 KY (2)
 LA (2)
 MA (2)
 MD (2)
 ME (2)
 MI (2)
 MN (2)
 MO (2)
 MS (2)
 Manitoba (2)
 Mexico - This is the state in Mexico, not the entirety of Mexico (2)
 NC (2)
 ND (2)
 NE (2)
 NH (2)
 NJ (2)
 NM (2)
 NV (2)
 NY (2)
 New Brunswick (2)
 Newfoundland and Labrador (2)
 Nova Scotia (2)
 Nuevo Leon (2)
 OH (2)
 OK (2)
 OR (2)
 Ontario (2)
 Prince Edward Island (2)
 Quebec (2)
 Queretaro (2)
 RI (2)
 SC (2)
 SD (2)
 Saskatchewan (2)
 TN (2)
 UT (2)
 VA (2)
 VT (2)
 WA (2)
 WI (2)
 WV (2)
 WY (2)
 Yukon (2)
 Zacatecas (2)
 AK (1)
 Alberta (1)
 Cayman Islands (1)
 Curacao (1)
 HI (1)
 Northwest Territories (1)
 Saint Lucia (1)
Thorax and or abdomen, markings on the surface - Note, this is NOT the hair color
 None, entire body black, brown, metallic or abdomen ALONE red. upperside of abdomen rarely with narrow cream - colored or dull yellowish markings along rims of segments (31)
 Bright yellow, white, or red - rarely, entirely red (3)
Thorax, axilla, shape
 Rear margin tame, without projection, in line with the rest of the scutellum (20)
 Axilla, end projecting out of the rear of the scutellum as a triangle, spine, or, rarely, rounded over (3)
Thorax, primary color - Note this is the base color, not the hair color, there can be various other markings in addition
 Other colors, this can include black, brown, red, yellow, and white colors (31)
 Blue, blue-green, or dark green, usually dulled by a rough surface or inscribed microscopic surface lines (12)
 Bright, shiny, race car, in-your-face green - at times with strong gold or blue overtones (2)
Thorax, scutellum, profile of top rear portion
 Less strongly convex, posterior third at an angle of 110 degrees or more to front part. scutum and scutellum not bituberculate. metanotum and base of propodeum often more nearly horizontal (7)
 Strongly convex in profile, posterior portion - at least behind spines and tubercles, when present - nearly at right angles to front portion. scutum and scutellum sometimes bilobed, bituberculate, or bispinose. metanotum and propodeum drop off steeply (1)
Wing, basal vein of forewing
 Gently and UNIFORMLY arched or straight THROUGHOUT its length (23)
 Lower portion STRONGLY bent or arched (10)
Wing, jugal to vannal lobe ratio
 Less, usually much less, than two-thirds as long (8)
 At least nearly three-fourths as long (1)
Wing, submarginal cell number
 3 (26)
 2 (16)
Wing, surface
 Entire forewing with numerous minute hairs. wing surface beyond veins with no small bumps or, if so, with many of them ending in hairs or with hairs intermixed among them (13)
 Closed cells of forewing largely hairless. wing surface between wing tip and veins filled with small HAIRLESS bumps (1)
Xylocopa vs selected other genera
 Others, marginal cell six times as long as broad or less, much more than half as wide as widest submarginal cell. stigma usually distinct (12)
 Xylocopa, marginal cell slender, seven times as long as broad and only a little over half as wide as widest submarginal cell. stigma absent (1)