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Discover Life 18 kinds match:
Exomalopsis analis  [popup] female
Exomalopsis analis  [popup] male
Exomalopsis birkmanni  [popup] female
Exomalopsis birkmanni  [popup] male
Exomalopsis dimidiata  [popup] female
Exomalopsis dimidiata  [popup] male
Exomalopsis hurdi  [popup] female
Exomalopsis hurdi  [popup] male
Exomalopsis similis  [popup] female
Exomalopsis similis  [popup] male
Exomalopsis snowi  [popup] female
Exomalopsis snowi  [popup] male
Exomalopsis solani  [popup] female
Exomalopsis solani  [popup] male
Exomalopsis solidaginis  [popup] female
Exomalopsis solidaginis  [popup] male
Exomalopsis tibialis  [popup] female
Exomalopsis tibialis  [popup] male


REMAINING (number with state)
FEMALE, E. tibialis vs other species
 Other species - More common and widespread, always choose this option unless you have a lot of evidence for concluding the specimens are E. tibialis (16)
 E. tibialis - This is a rare Southwest bee with very few records, only found in TX for the United States - The author of this guide was unable to locate or verify the existence of any identified female specimens and females are unscored as a result (1)
Female, E. analis vs other species
 Other species - Hairs of vertex nearly entirely white or yellowish, sometimes a light brown - Pronotal lobe with only light hairs, ranging from white to light brown - Scutellum often with small amounts of black hairs in the interior, but still nearly entirely light (7)
 E. analis - Hairs of vertex primarily black, or nearly so - Pronotal lobe with at least some blackish hairs - Scutellum largely or entirely black pubescent (1)
Female, E. birkmanni vs E. solani
 E. birkmanni - Midtibia with extensive darker hairs, these brownish hairs extending almost the entire length of the segment while also usually extending across the entire transverse width of the outer face - With much more yellow-orangish hair on the head and thorax, this most visible on the scutellum where the hair stands in contrast with the whiter hairs of the central tuft of the metanotum (1)
 E. solani - Midtibia with slightly browned hairs restricted only to the apical half of the segment, while usually not extending across more than half of the outer face - With much more whitish hair on the head and thorax, this most visible on the scutellum where the hair appears only slightly darker than that of the metanotum if at all different (1)
Female, E. birkmanni vs E. solidaginis
 E. birkmanni - Midtibia with distinct, dark brown hairs on outer face - Pits on the lateral faces of the propodeum much coarser and more densely spaced, averaging under one pit diameter in interspace distance anteriorly and becoming less dense posteriorly - Integumental color of abdomen always black to dark brown and opaque - In direct comparison, larger, usually nearing or equal to 12mm (1)
 E. solidaginis - If with any brownish hairs on outer face of midtibia, they are a very light brown - Pits on the lateral faces of the propodeum finer and sparsely spaced, averaging more than one pit diameter in interspace distance throughout - Integumental color of abdomen often, but not always, transparently reddish-orange - In direct comparison, smaller, never reaching 10mm (1)
Female, E. solani vs E. solidaginis - CAREFUL, very difficult to separate pair
 E. solani - Rear border of the mesepisternum with pit spacing of at most one interpit diameter, this area being only slightly less densely pitted than the anterior area of the mesepisternum - In direct comparison, slightly larger - According to Timberlake, the middle joints of the flagellomeres are slightly longer than wide, and the basal area of the propodeum has few pits, although these characters are not apparent to us (1)
 E. solidaginis - Rear border of mesepisternum with pit spacing much sparser than in the anterior portion, often, but not always, with greater than one pit diameter in interpit spacing - In direct comparison, slightly smaller - According to Timberlake, the middle joints of the flagellomeres are about as wide as long, and the basal area of the propodeum is unpitted, although these characters are not apparent to us (1)
Female, Subgenus Stilbomalopsis vs others
 Subgenus Stilbomalopsis - Pitting near the anterior rim of the clypeus much sparser than in basal region, often with interpit distance reaching several pit diameters - Scutum almost entirely smooth and very shiny, nearly mirror-like in posterior half of scutum, this unpitted area making up roughly half the longitudinal length of the scutum when measured at the midline - Normally without distinct pits near the posterior rim of the scutum, at most with very fine and sparse pinprick pits that are hardly visible even at high magnification - T2 largely unpitted and shiny, with more than half of its median longitudinal length devoid of pitting (5)
 Other subgenera - Pitting near the apical rim of the clypeus equal or nearly equal in density to that of the basal region - Scutum densely to sparsely pitted throughout, if with any less densely pitted area in the posterior area of the scutum then it is much less than half the length of the scutum - Most often with distinct pits near the posterior rim of the scutum - T2 with pits going all the way to the rim or very nearly so (3)
Female, abdomen, T3, form of light apical transverse hair bands
 Hair band reaching the rim throughout, not noticeably farther from the rim in the center of T3 that the sides (6)
 Hair band medially not reaching the apical rim, although it does at its lateral sides (2)
 Hair band never reaching the apical rim, although it is closer at the sides than in the middle, and there may be some sparse hairs along the rim which do not form a dense band (2)
Female, head, F1 antennal length - Note, use the minimum length of F1
 F1 obviously greater in length than F2, at least nearing 1.5x its length but less than 2X (7)
 F1 equal in length to F2, or nearly so (3)
 F1 fully 2X longer than F2, or greater (1)
Female, head, distance between lateral ocelli and medial ocellus, using the widest diameter of the medial ocellus
 Large, distance greater than the diameter of the medial ocellus (4)
 Moderate, distance about equal to the diameter of the medial ocellus (4)
 Small, distance less than the diameter of the medial ocellus (3)
Female, rear leg, color of hairs on outer face of the basitarsi
 Entirely white to pale yellowish (6)
 With a significant amount of darker, blackish hair present dorsally (3)
Female, subgenus Stilbomalopsis - E. dimidiata and E. hurdi vs Other Stilbomalopsis species
 Other Stilbomalopsis species - On the hind basitarsi, the hair of the INNER FACE is at most a burnt orange color which does not reach the darkness of the hairs found on the inner face of the basitarsi of E. hurdi and comes nowhere close to the darkness of its dorsal black hairs or those found on the basitarsi of E. dimidiata (3)
 E. dimidiata and E. hurdi - On the hind basitarsi, there is always dark brown to black hair on the INNER FACE - In E. dimidiata, this blackish hair is also found on the outer face, and in E. hurdi there is usually a blackish patch of hair located on the dorsal edge of the basitarsus, this hair being darker than the dark brown hairs of the inner face (2)
Female, thorax, middle leg, tibia, hair color on the OUTER surface
 With obviously darker hairs mixed in, these dark hairs most often BROWNISH in coloration and sometimes very close to black, but never with ANY black hairs (7)
 All white to off-white, except sometimes for a very slightly browned apical patch (4)
 BLACK hairs present, ranging from a small amount to the majority, but almost always obvious (2)
Female, thorax, tegula, color
 Tegula dark, black or dark brownish, and usually opaque (6)
 Tegula light, orange or light brownish, usually transparent such that the wing base below is mostly visible (3)
Male, E. analis vs E. similis
 E. analis - The patch of longer hairs along the posterior edge or rim of the scutellum is composed of both dark and light hairs, sometimes the dark hairs only grayish rather than black, these are in addition to the shorter black hairs present basally - Almost always at least a few of the hairs on the outer face of the hind tibia are black, this most common near the anterior edge (1)
 E. similis - The patch of longer hairs along the posterior edge or rim of the scutellum is composed of lighter, yellowish-brown hairs which are far lighter than the shorter black hairs present basally - The hairs on the outer face of the hind tibia are all light, white to off-white (1)
Male, E. birkmanni vs E. solani - Caution, this is a hard-to-distinguish species pair - According to both Timberlake in his 1980 publication and the author of this guide E. birkmanni is likely just a subspecies or variant of E. solani
 E. birkmanni - In direct comparison, the hairs of the body are yellowish - According to Timberlake the wings of this species are darker - This species is less common, recorded in Texas and throughout Mexico (1)
 E. solani - In direct comparison, the hairs of the body are whitish - According to Timberlake the wings of this species are lighter - This is the most common North American species of the group, present from Arizona to Texas and up to Utah while also widespread in Mexico (1)
Male, E. hurdi vs other species
 Other species - LACKING an extremely dense patch of pale hairs on the posterior edge of the hind tibia, the hairs here appearing sparse and about equal in density to elsewhere on the hind tibia although they may be pale (8)
 E. hurdi - The apical two-thirds to three-fourths of the posterior edge of the hind tibia there is lined with light, extremely dense hair, clearly denser than elsewhere on the hind tibia - This hair patch is distinct enough that it is even obvious when matted (1)
Male, E. snowi vs other species
 Other species - Mandible integumental color reddish-brown to black - Scape integumental color brownish like the surrounding integument of the head (8)
 E. snowi - Mandible integumental color yellowish - Scape integumental color yellowish, golden to orangish (1)
Male, abdomen, T7, hair color - Be sure that you are looking at HAIR COLOR and not what it may APPEAR to be due to integumental color
 All Pale - Hairs entirely light or with only a few dark hairs, whitish to orangish in color (5)
 Primarily Dark - Primarily dark hairs particularly laterally, sometimes with some limited light hairs medially (4)
Male, abdomen, terga, pattern of pale hairs
 Largely absent - With dense, long hairs of variable color present basally, these hairs normally projecting back over the unpitted apical rim (5)
 Present - With a latitudinal strip of pale, appressed hairs which are flanked AT LEAST basally by dark hairs and sometimes also apically (3)
 Present - With hair covering the surface of the terga nearly entirely, light densely appressed hairs near the base and middle forming a complete latitudinal band BUT with black hairs along the rims (2)
Male, legs, hair color
 All Light - All light, with NO dark brown or black hairs (6)
 Some Dark Hairs Present - With at least some degree of DARK hairs present on the legs, this usually most apparent on the hind leg (4)
Male, thorax, propodeum, pitting along the basal edge which borders the metanotum
 Present, Dense - Pitting dense and roughly evenly spaced, with average pit interspaces less than their own diameter, and with hairs present medially (5)
 Present, Sparse - Pitting relatively sparse and variable, average pit interspaces greater than their own diameter, and USUALLY without hairs at the middle (4)
 Absent - Neither pitting nor hairs are present medially (3)
Male, thorax, tegula, color
 Light - Yellow to orangish, and usually transparent (6)
 Dark - Dark brownish, usually translucent or opaque (5)
Sex, number of antennal segments
 Female, 12 (9)
 Male, 13 (9)
State or province where bee was collected
 NM (14)
 TX (12)
 AZ (8)
 CO (4)
 FL (4)
 GA (3)
 CA (2)
 UT (2)