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Discover Life
32 kinds match


Centris agameta  [popup]
Centris angustifrons  [popup]
Centris aterrima  [popup]
Centris atripes  [popup]
Centris caesalpiniae  [popup]
Centris californica  [popup]
Centris cockerelli  [popup]
Centris decolorata  [popup]
Centris ectypha  [popup]
Centris eisenii  [popup]
Centris errans  [popup]
Centris ferrisi  [popup]
Centris fisheri  [popup]
Centris flavofasciata  [popup]
Centris harbisoni  [popup]
Centris hoffmanseggiae  [popup]
Centris laevibullata  [popup]
Centris lanosa  [popup]
Centris mexicana  [popup]
Centris nigrocaerulea  [popup]
Centris nitida  [popup]
Centris pallida  [popup]
Centris rhodomelas  [popup]
Centris rhodopus  [popup]
Centris ruthannae  [popup]
Centris satana  [popup]
Centris tiburonensis  [popup]
Centris transversa  [popup]
Centris trigonoides  [popup]
Centris vanduzeei  [popup]
Centris varia  [popup]
Centris zacateca  [popup]

REMAINING (number with state)
Abdomen, T1, hair color
 1. All light - With only yellow to off-white hairs (16)
 2. Primarily light - With some limited dark hairs present (16)
 3. Intermixed - There are roughly equal amounts of light and dark hairs (8)
 4. Primarily dark - There are more dark hairs than light hairs (7)
 5. All dark (3)
Abdomen, T2, hair color ON THE DORSAL FACE, ignoring the sides
 3. All dark (19)
 2. Intermixed - With both light and dark hairs present (9)
 1. All light - With only yellow to off-white hairs (7)
Abdomen, T5, hair color
 1. All light (13)
 4. All black or nearly so - If with any light hairs present then they are far outnumbered by dark hairs (13)
 2. Primarily light - With dark hairs only found at the lateral sides (6)
 3. Intermixed light and dark hairs throughout - Hard to tell which is dominant (3)
Abdomen, integumental color - Use with caution and close inspection
 1. Blackish - All or nearly all BLACK or VERY dark brown (22)
 2. Dark Metallic Blue - At first often appearing black, but upon closer inspection it is primarily a very dark blue with metallic reflections (8)
 3. Reddish Brown - With a significant degree of reddish-brown integument, although sometimes the reddish-brown may be limited only to the lateral sides of the basal terga and on the sterna (7)
 4. Yellow - The primary color of the integument is yellow due to the exaggerated extent of the yellow integumental markings that are normally much more limited, at least on the terga (2)
Abdomen, presence and form of light-colored apical hair bands - Make note that specimens with matted hairs should not be scored for this character
 1. Absent - No apical hair bands, hair color either intermixed thoroughly or hairs completely and uniformly cover the tergite without a clear increase in density along the rim (22)
 2. APPEARING present due to appressed hairs and or integumental color - Although all hairs on the tergites are light, those along the apical rim are prone and appressed such that they appear thicker like hair bands - Hair bands may also appear to be present due to lighter integument along the rim - Note that this type of presence is most obvious when viewed without a microscope (5)
 3. Present - There are darker hairs basally and lighter hairs for a clear band along the rim - Even if the rim is lighter or the hairs there are more appressed you should score for only this character if it fits (2)
Abdomen, terga, presence or absence of pale, OPAQUE integumental markings rather than a simple lightening due to translucence of the integument as is often seen along the rim
 3. Absent - No light integumental markings are present (23)
 1. Extensive - There are pale markings on more than just T2, these markings may or may not be continuous across any particular tergite (2)
 2. Present on T2, weak - There are pale marks on ONLY T2 and these markings are interrupted medially (2)
Body length in mm, when measured from tip of abdomen to front of head
 14 (24)
 13 (21)
 15 (21)
 16 (18)
 12 (17)
 17 (14)
 10 (10)
 11 (10)
 18 (9)
 19 (5)
 20 (3)
 21 (2)
 22 (1)
 9 (1)
C. agameta vs C. cockerelli
 C. agameta - There is a distinct, obvious pygidial plate with strong lateral carination - The clypeus is roughened and weakly tessellate, making it relatively dull and unreflective - There are always extensive dark hairs on the vertex, although sometimes right at the top there may be many light hairs along the edge - This species is much larger on average, about 15-16mm in total body length (1)
 C. cockerelli - There is no pygidial plate, only vague remnants without well defined lateral carination remain - The clypeus is very smooth and shiny, making it highly reflective - If any dark hairs are present on the vertex of the head, they are found just behind the ocelli - This species is much smaller on average, about 13mm in total body length (1)
C. atripes vs C. lanosa
 C. atripes - The face is more broad medially and this is a consequence of the inner margins of the eye being parallel or nearly so, if at all convergent around the longitudinal midpoint of the face then only very slightly so (1)
 C. lanosa - The face is narrowed around the middle of its longitudinal length, this due to the strong curving toward the center of the face seen in the inner margins of the compound eyes (1)
C. eisenii vs C. flavofasciata
 C. eisenii - The yellow tergal markings are more extensive, reaching from the base to near the apical rim - There is at most a dot of yellow integument at the very top of the fore tibia - The scutum hair ranges from tan to a medium brown color, no specimens have been seen with fully black hair - The non-yellow portions of the terga are brown to black, not metallic blue (1)
 C. flavofasciata - The yellow tergal markings are limited, usually only present in the basal halves of the terga, broadly separated from the rim as such - There are extensive yellow maculations on the fore tibia, usually reaching from top to near the bottom - There is a transverse bar of black hair on the scutum between the tegulae - The non-yellow portions of the terga are largely metallic blue (1)
C. fisheri vs C. agameta and C. ferrisi
 C. agameta and C. ferrisi - The terga are clearly pitted, making them much less reflective and shiny overall (2)
 C. fisheri - The terga are nearly entirely unpitted, to the extent that pits are often difficult to find, leaving the surface unusually shiny and reflective (1)
C. hoffmanseggiae vs C. pallida
 C. hoffmanseggiae - The clypeus is at most irregularly roughened, lacking tessellation, making it relatively shiny - The hair of T5 is a definite mix of white and black hairs, often with more black than white hairs - The light integumental color of the clypeus is an off-white color (1)
 C. pallida - The clypeal surface is tessellate, making it relatively dull and unreflective - The hair of T5 is entirely white, rarely if ever with some of it appearing a brownish color at certain angles - The light integumental color of the clypeus is yellow (1)
C. nitida vs C. trigonoides
 C. nitida - This species only very rarely exhibits any red coloration of the terga - The hair of T5-6 is white - This species is larger on average, usually about 12-13mm in total body length (1)
 C. trigonoides - The terga are almost always at least half reddened, although some few specimens have been seen with only reddening on the apical two terga - The hair of T5-6 is yellow to orange, although it may fade to white - This species is smaller on average, about 11mm in total body length (1)
C. pallida vs C. tiburonensis
 C. pallida The compound eyes are more convergent above, their inner margins appearing roughly parallel until just barely before the top if at all, this giving the impression that they are convergent throughout the upper half of the eye (1)
 C. tiburonensis The space between the compound eyes is clearly least around the antennal bases and from here the inner eye margins gradually increases all the way to the top of the eyes such that they appear much more convergent at the middle than at the top (1)
Head, antennae, integumental color of scape
 1. All black (16)
 3. Yellow, complete - With yellow markings present from the base to the tip of the scape or nearly so (11)
 2. Yellow, limited - There are yellow markings present but they take up LESS THAN OR EQUAL TO half the length of the scape (5)
Head, antennae, length of F1
 3. Long - About equal to the combined lengths of F2-4 or longer, sometimes SLIGHTLY shorter (19)
 2. Moderate - As long as or SLIGHTLY longer than the combined lengths of F2-3 (8)
 1. Short - Shorter than F2-3 combined (6)
Head, clypeus, integumental color
 1. All yellow - However, sometimes a very small amount of black intrudes from the tentorial pits (18)
 2. Nearly all yellow - The only black portions of the clypeus are found at the top of the clypeus, lateral to the yellow markings that reach the supraclypeus medially (7)
 3. Primarily yellow but dark near supraclypeus - The majority of the clypeus is yellow or pale-colored including the rim, but the upper half of the clypeus contains dark integument which runs over the top of the clypeus and partially down the sides as a continuous bar (6)
 5. All black or nearly so, if with any yellow then it is just barely present on the apical rim but not on the main area of the clypeus above (4)
 4. Primarily yellow with dark areas at rim and base - The apical rim and the base of the clypeus have dark integument, SOMETIMES with the yellow portion greatly restricted largely to a medial line or block (2)
Head, mandible, integumental color on the outer, most visible, face - This is measured in length along the mandible rather than total proportion yellow - Disregard the golden smear often present at the very tip of the mandible
 1. Primarily yellow - The majority is yellow but roughly the apical third is dark (17)
 3. All dark - Lacking OPAQUE light integument (12)
 2. With some yellow - The base of the mandible is all yellow but the light color does not extend past the midpoint of the length of the mandible (11)
Head, mandible, number of teeth IN THE APICAL HALF - The tip of the mandible counts as a tooth and note that the third tooth in from the tip may sometimes be bidentate or forked and SHOULD BE CONSIDERED two teeth and, as such, the total number of teeth would be four - If there is an extremely obtuse bump or angle in place of a third tooth it SHOULD NOT be scored as a tooth
 2. Three (26)
 3. Four (5)
 1. Two (2)
Head, paraocular area, presence or absence of any degree of light integumental markings
 5. Absent (15)
 1. Present, strong - Equal to or extending past the top of the clypeus, obvious in doing so because it fills more than half of the width of the paraocular area (9)
 4. Present, limited - Little more than a dot, often hard to notice (7)
 2. Present, thin - Usually reaching the top of the clypeus, although this may be hard to see because AT LEAST HALF OF ITS LENGTH takes the form of a very thin line running up along the inner edge of the compound eye (5)
 3. Present, moderate - Clearly more than a dot but clearly not coming within the top fourth of the clypeus (5)
Head, supraclypeus, light integumental markings
 Present - Light integumental markings are present on the supraclypeus, often coming to a distinct triangular point medially but sometimes the markings may be thin and linear or even interrupted (20)
 Absent - There are no light integumental markings present on the supraclypeus (13)
Head, vertex, hair color
 2. Primarily light - With some limited dark hairs present (18)
 1. All light - With only yellow to off-white hairs (16)
 3. Intermixed - There are roughly equal amounts of light and dark hairs (7)
 4. Primarily dark - There are more dark hairs than light hairs (6)
 5. All dark (5)
Rear leg, femur, hair color
 2. Intermixed - With both light and dark hairs present (12)
 3. All dark (12)
 1. All light - With only yellow or off-white to light brownish hairs (10)
Species POTENTIALLY found in the United States - A number of the species in the guide were not found directly in the US but were included due to their proximity
 Display all species (32)
 Remove the species for which there are no confirmed US records (23)
Species not scored for this guide yet - Do not click either state of this character if you wish to include ALL species
 RECOMMENDED - Remove these species from the guide (27)
 Display species not scored (5)
State or province where bee was collected
 Sonora (26)
 AZ (25)
 Sinaloa (16)
 Jalisco (15)
 Michoacan (15)
 NM (15)
 Nayarit (15)
 Oaxaca (15)
 Guerrero (14)
 Puebla (14)
 CA (13)
 Colima (13)
 Mexico (13)
 Veracruz (13)
 Zacatecas (13)
 Chiapas (12)
 Chihuahua (12)
 Durango (12)
 Guanajuato (12)
 Queretaro (12)
 Baja California (11)
 Baja California Sur (11)
 Morelos (11)
 Tabasco (11)
 Tlaxcala (10)
 Aguascalientes (9)
 Hidalgo (8)
 Nuevo Leon (8)
 TX (8)
 Campeche (7)
 NV (7)
 San Luis Potosi (7)
 Tamaulipas (7)
 Coahuila (6)
 Quintana Roo (6)
 Yucatan (6)
 UT (4)
 FL (3)
 OK (3)
 CO (2)
 KS (2)
 AL (1)
 AR (1)
 GA (1)
 LA (1)
 MS (1)
 Paracentris (24)
 Centris (5)
 Heterocentris (3)
Thorax, mesepisternum, hair color
 1. All light - With only yellow to off-white hairs visible from the side, sometimes with darker hairs hidden ventrally (20)
 2. Primarily light - With some limited dark hairs present, often ventral, although they can be seen from the side (8)
 4. Primarily dark OR all dark - There are more dark hairs than light hairs (8)
 3. Intermixed - There are roughly equal amounts of light and dark hairs (4)
Thorax, scutum, hair color
 1. All light, yellow to white - With only yellow to off-white hairs, sometimes a light yellow-brown tan color about the same as those hairs of the mesepisternum (19)
 2. All light, orange to brown - Deeply orange or brown at least in part, clearly darker than the hairs of the mesepisternum if they are light BUT not dark brown or blackish (7)
 4. All dark (4)
 3. With SOME dark hairs - Ranging from few dark hairs to primarily dark hairs, BUT always with at least some light hairs present (3)