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Discover Life 18 kinds match:
Dieunomia apacha  [popup] female
Dieunomia apacha  [popup] male
Dieunomia boharti  [popup] female
Dieunomia boharti  [popup] male
Dieunomia bolliana  [popup] female
Dieunomia bolliana  [popup] male
Dieunomia heteropoda  [popup] female
Dieunomia heteropoda  [popup] male
Dieunomia mesillae  [popup] female
Dieunomia mesillae  [popup] male
Dieunomia micheneri  [popup] female
Dieunomia micheneri  [popup] male
Dieunomia nevadensis  [popup] female
Dieunomia nevadensis  [popup] male
Dieunomia triangulifera  [popup] female
Dieunomia triangulifera  [popup] male
Dieunomia xerophila  [popup] female
Dieunomia xerophila  [popup] male


REMAINING (number with state)
Female, D. apacha vs D. heteropoda
 D. apacha - T1 is bald throughout the dorsal surface except at the sides, the different pit sizes appearing to grade into each other - The vertical face of the propodeal triangle is almost entirely smooth, if with any roughening then it is weak and restricted to the midline such that it fills MUCH LESS than half the width of the area - Overall pubescence of body ALWAYS off-white to tan or light brown overall, if with any darker hairs then they are limited and well-outnumbered by the lighter hairs - This species is limited in its range to the Southwest primarily, although it is also recorded from as far north as Nebraska which would make its range appear to be much of Texas and New Mexico up through Colorado and potentially adjacent states to Nebraska (1)
 D. heteropoda - T1 is sparsely covered in hairs throughout, the pits from which these hairs arise being larger and deeper than those without hairs - The vertical face of the propodeal triangle is roughened by uneven integument, usually also with clear transverse striations that fill well more than half the width of this area - Overall pubescence of body highly variable, ranging from overall a very dark, blackish brown to the kind of tan color you see in D. apacha - This species is found almost throughout the entire United States in its many forms, the darker form appearing more prevalent in the more northern and eastern collections while the lighter specimens are more common in the Southwest, ALTHOUGH some dark specimens have been seen from Oklahoma and some light specimens have been seen from Georgia (1)
Female, D. apacha vs. D. bolliana
 D. apacha - The hind tibial scopa is largely pale, somewhat yellowish, although along the top there is a stripe of dark brown hairs running from the basitibial plate to the end of the tibia - On T6, the hairs flanking the pygidial plate on each side are DARK BROWN TO BLACK in color - The integument of the body is always dark brown to blackish primarily, sometimes with parts of the legs reddish or orangish - All examined females have been equal to or greater than 15mm in total body length (1)
 D. bolliana - The hind tibial scopa is entirely pale, if with any darkening then it is right behind the basitibial plate for less than half its length AND it is at most orangish - On T6, the hairs flanking the pygidial plate on each side are ORANGISH TO LIGHT BROWN in color - The integument of the body is often largely reddened, especially on the abdomen and thorax - All examined females have been less than 15mm in length, usually around 12-13mm in total body length (1)
Female, D. boharti vs D. micheneri and D. nevadensis
 D. micheneri and D. nevadensis - On T1 and T2, the area immediately prior to the impressed apical rim is only slightly swollen and although the pitting may be slightly more sparse here it is still present - The outer side of the tegula is relatively evenly rounded over, with the inner side posteriorly having at most a very slight and indistinct bump along its inner margin (2)
 D. boharti - On T1 and T2, the area immediately prior to the impressed apical rim is extremely swollen and unpitted - The outer edge of the tegula narrows at about two-thirds down its length when measured from the anterior tip, the tegula then widening again right near the tip, this made even more obvious by the strong protuberance present posteriorly along the inner margin (1)
Female, D. micheneri vs D. nevadensis
 D. micheneri - Clypeal rim dentate, with a pair of small teeth located medially, best viewed either by removing hairs or by angling the head upside-down and looking in at the clypeal rim from the side (1)
 D. nevadensis - Tibia of hindleg with a distinct, and most often protruding obtusely angled bump about halfway down the length of the tibia - The concave area of T1 is well defined laterally, such that it is possible to tell where this area ends laterally, although it may sometimes appear only weakly defined - Often with extensive reddening of T3, at least in the Southwest - In direct comparison, smaller - Relatively widespread in the Southern and Western US, reaching as far East as Florida - NOTE that while it is the Southwestern D. nevadensis arizonensis which has the most extensive reddening and shares its range with D. micheneri, other forms have been seen to be much darker in their integumental coloration (1)
Female, abdomen, T5, hair color
 Nearly all light, white, yellow, or light brownish, although sometimes the hairs are slightly darkened just along the rim (5)
 Primarily dark, at least in the apical half, black or dark brownish (4)
Female, body length in mm, when measured from tip of abdomen to front of head
 16 (5)
 11 (4)
 12 (4)
 13 (4)
 14 (4)
 15 (4)
 17 (4)
 18 (4)
 10 (3)
 19 (2)
 20 (2)
 8 (2)
 9 (2)
Female, thorax, longitudinal length of sculpted portion of propodeum at the middle vs the longitudinal length of the metanotum at the middle
 Metanotum longer (5)
 Metanotum about equal (4)
 Metanotum shorter (3)
IMPORTANT - Remove synonyms from guide - Note that both D. mesillae and D. xerophila are synonyms of D. apacha and D. heteropoda respectively and are only included in the guide to let this be known prior to publication of this information by the author of the guide
 1. Remove these synonyms (14)
 2. Display synonyms (4)
Male, D. micheneri vs D. nevadensis
 D. micheneri - Tibia of hindleg with only a very gradual and slightly-elevated bump near the middle of the inner surface, if any such bump present at all - The concave portion of T1 very gradually transitions into the lateral sides of T1, making it effectively impossible to distinguish where the concave area ends laterally - NEVER with extensive reddening of T3 - In direct comparison, larger - Limited in its distribution to Mexico and those states bordering it to the North (1)
 D. nevadensis - Tibia of hindleg with a distinct, and most often protruding obtusely angled bump about halfway down the length of the tibia - The concave area of T1 is well defined laterally, such that it is possible to tell where this area ends laterally, although it may sometimes appear only weakly defined - Often with extensive reddening of T3, at least in the Southwest - In direct comparison, smaller - Relatively widespread in the Southern and Western US, reaching as far East as Florida - NOTE that while it is the Southwestern D. nevadensis arizonensis which has the most extensive reddening and shares its range with D. micheneri, other forms have been seen to be much darker in their integumental coloration (1)
Male, D. triangulifera vs other species
 Other species - Pitting at the top of the compound eye variable, but almost always with at least a few pit interspaces nearing one pit diameter - Rear face of propodeum is most often sparsely pitted and the surface appears evenly smooth and shiny throughout, although in D. heteropoda they may sometimes be coarse and dense (8)
 D. triangulifera - Pitting at the top of the compound eye exceptionally dense, with most pits nearly touching and no pit interspaces nearing one pit diameter in size - Rear face of propodeum very roughened throughout, appearing dulled overall as a result, with pit interspaces ranging from nearly touching to over one pit diameter (1)
Male, body length in mm, when measured from tip of abdomen to front of head
 11 (5)
 12 (5)
 10 (4)
 13 (4)
 17 (4)
 18 (4)
 19 (4)
 14 (3)
 15 (3)
 16 (3)
 20 (2)
 21 (2)
 8 (2)
 9 (2)
 22 (1)
 23 (1)
 24 (1)
Male, hindleg, tibia, outline of apical structure in profile
 Structure relatively simplistic and pointed apically, with one spike here, although there is also a bump present near the middle of the tibia (2)
 Structure simplistic and pointed, with one apical spike present, the base of the spike straight or nearly so in its length (2)
 Structure very large and bulbous apically, not pointed but instead with a large lobe that has a clear groove indented along its tip which is visible from the side, as well as a distinct bump in the basal half of the tibia and an inward-projecting spike near the tip (2)
 Structure very large and bulbous apically, not pointed but instead with a large lobe that may or may not have two distinct points near its tip, usually has a slight bump in the basal half of the tibia as well (2)
 Structure with a small spike near the apex of the tibia as well as a large lobe basal to it (1)
 There is a very reduced knob present at the inner tip of the tibia and the tibia is otherwise only very gradually swollen toward the tip such that the two sides are near-parallel (1)
Sex, number of antennal segments
 Female, 12 (9)
 Male, 13 (9)
State or province where bee was collected
 NM (16)
 TX (15)
 CO (12)
 AZ (10)
 KS (8)
 UT (8)
 NE (6)
 OK (6)
 AL (4)
 FL (4)
 GA (4)
 IA (4)
 IL (4)
 LA (4)
 MN (4)
 MO (4)
 MS (4)
 Mexico (4)
 NC (4)
 ND (4)
 NV (4)
 OR (4)
 SC (4)
 SD (4)
 TN (4)
 WY (4)
 AR (2)
 CA (2)
 DE (2)
 IN (2)
 KY (2)
 MD (2)
 MI (2)
 NJ (2)
 OH (2)
 PA (2)
 VA (2)
 WV (2)
Subgenus - Dieunomia vs Epinomia
 Dieunomia - The first segment of the labial palp is greater than or equal to the subsequent segments 2-4 in terms of length - In males, the terminal antennal segment is flattened and broadened such that it is much wider in the apical half than in the basal half - In females, the hair of the scutum is entirely short and usually semi-appressed overall, giving it a more dense, crewcut appearance AND the pit interspaces in the posterior half of the scutum rarely, if ever, approach one pit diameter - In general, Dieunomia is much larger than Epinomia although D. bolliana of Dieunomia is about the size of D. triangulifera of Epinomia (10)
 Epinomia - The first segment of the labial palp is shorter than the subsequent segments 2-4 in terms of length - In males, the terminal antennal segment is relatively unmodified and of about equal width throughout such that it appears somewhat like a fingertip - In females, there are much longer, more erect hairs present on the scutum or if with short hairs then the pit interspaces in the posterior half of the scutum almost always exceed one pit diameter at least in part - In general, Dieunomia is much larger than Epinomia although D. bolliana of Dieunomia is about the size of D. triangulifera of Epinomia (8)