3 p. ; 24 cm.Includes bibliographical references

Cockerell, Theodore D. A. (Theodore Dru Alison), 1866-1948.

Lutz, Frank Eugene, 1879-1943.

American Museum of Natural History Scientific Publications

AMERICAN MUSEUM NOVITATESPublished byNumber 595 THuc AMURICAN MUSEUM OF NATURAL HIsToRY Jan. 26, 193359.57,99 (78)ROCKY MOUNTAIN BEES.-IVBY T. D. A. COCKERELLAll the bees recorded below were collected by Dr. F. E. Lutz, exceptwhen the contrary is specified.Anthophora infernalis (Dalla Torre)Utah: Eureka, May 26, June 8 and June 14, 1920 (Tom Spaulding).They agree with a specimen from Claremont, California (Baker), andthis adds one more to the growing list of bees ranging from California asfar east as Utah. The species was originally described from Nevada.It is extremely similar to the European A. acervorum (Linnaeus).Anthophora montana CressonColorado: Elbert, June 9-11, 1922, at approximately 7400 ft., male.Melitoma grisella CockereU and PorterColorado: Regnier, one female. The subfamily formerly calledEntechniinae must be called Melitomine.Ancylosceles sejuncta, new speciesMALE.-Length about 7.5 mm., anterior wing 5 mm.; black, with the tarsi moreor less rufous, the hind basitarsi clear chestnut-red, with a long sharp basal tooth;elypeus very prominent, it and labrum entirely black; mandibles dusky rufous,without any light spot; eyes gray; flagellum faintly reddish beneath; hair of headand thorax white; miesothorax shining but closely punctured; metathorax dull atbase, but beyond that polished; teguls dark rufous; wings perfectly clear, stigmaferruginous; abdomen long and narrow, shining, excessively minutely punctured,bases of tergites 3 to 6 rufous (this doubtless mostly concealed when abdomen iscontracted), tergites with white, apical hair-bands.Colorado: Regnier, Baca County, June 6-7, 1919. The hind femoraare enormously swollen, as is usual in the genus. Nearest to A. melano-stoma Cockerell, from La Paz, Lower California, but easily separated bythe largely red mandibles and clear red stigma. This genus, characteristicof Central and South America, is new to the United States, and its dis-covery in Colorado is very surprising. For an account of the genus andits curious history, see Entomological News, XXXII, p. 76.AMERICAN MUSEUM NOVITATESTetralonia lutziana, new speciesMALE.-Length about 12.5 mm., anterior wing 8.6; black, with the clypeus(squarely notched laterally) and labrum light lemon-yellow; mandibles rufous onouter side of apical half; flagellum reaching middle of second tergite, dark reddishbeneath; scape stout; third antennal joint not three times length of second, and onits longest side less than one-third length of fourth; eyes swollen, dark brown; facenarrow, the facial quadrangle much longer than broad; mesothorax dull in front, butthe posterior disc highly polished, with few punctures; hair of head creamy white,very long and abundant on cheeks; thorax above, and first two tergites, with richthough rather pale yellowish-fulvous hair; on under side of thorax the hair is paler,but not white; wings hyaline, slightly grayish; nervures dark brown; second cubitalcell much over half the length of first; recurrent nervures received about equally dis-tant from ends of second and third cubital cells; hind wing with twelve hooks; legsordinary, with light yellow hair, small joints of tarsi light red; mid-tarsi with basaljoint (basitarsus) parallel-sided, not narrowed apically, or twisted; hind basitarsithick, much broader than second joint, reddened at apex, and furnished with longhairs; hair on inner side of hind basitarsi very bright ferruginous; abdomen shining,the first two tergites closely and finely punctured; tergites 2 to 6 with very distinct,entire bands of pale grayish hair; apical plate parallel-sided, very broadly truncate;sides of apical tergite with short dense yellow hair; last sternite with a shining trans-verse sulcus.Colorado: Boulder, May 25, 1922, at approximately 5500 ft. Mostnearly related to T. lepida (Cresson), but distinguished by the propor-tions of the antennal joints and cubital cells, the reddened under side offlagellum, and the absence of any small yellow spot at base of mandibles.It is also distinguished by the quite normal middle tarsi. From T.snoviana (Cockerell) it is known by the thickened hind basitarsi and othercharacters. There is a rather strong superficial resemblance to theChinese T. jacoti Cockerell, the abdominal bands having quite the sameappearance, though jacoti has only three.Tetralonia dilecta (Cresson)Colorado: Elbert, June 9-11, 1922, female.Tetralonia cordleyi orophila CockerellColorado: Boulder, June 7, 1922, 6500-7100 ft., female. Topotype(Frank B. Lutz).Tetralonia vagabunda (Cockerell)Colorado: Boulder, May 18, 1913, at flowers of Mertensia linearis,male (M. M. Ellis).2 [No. 595ROCKY MOUNTAIN BEES.-IVTetralonia acerba (Cresson)Colorado: Boulder, May 24, 1913, at flowers of Erysimum wheeleri,male (M. D. Ellis).Utah: Eureka, May 20 and June 7, 1920 (Tom Spalding).Tetralonia, atriventris (Smith)Utah: Eureka, May 30, 1920 (Tom Spalding), female. This femaleagrees with one from Illinois, collected by Robertson. I have a strongfeeling that the two T. acerba males ought to go with it, but they arecertainly not the male T. atriventris of the Eastern States. The matter iscommended to collectors in Utah; but as things now stand, the twospecies are separated as follows.FEMmALESAbdomen with a white hair-band on fourth tergite, and a white spot on each side ofthird.......... acerba (Cresson).Abdomen without white hair beyond the first tergite; a further distinction is the clearred (instead of black ordark fuscous) hair on inner side of hind basitarsi.atriventris (Smith).MALESYellow of clypeus not at all notched at sides; abdomen beneath with black hair,except near base.......... atriventris (Smith).Yellow of clypeus strongly notched at sides; abdomen beneath with much white hair.acerba (Cremon).Tetralonia speciosa (Cresson)Colorado: White Rocks, near Boulder, June 5, 1922, male. Thisis the true T. speciosa, with fulvous hair on hind tibiae; the variationgillettei (Cockerell) has this hair white.Emphoropsis morrisoni (Cresson)Colorado: Boulder, May 25, 1922 at Pentstemon, male.Nomia (Dieunomla) apacha CressonColorado: Crowley, Sept. 1, 1932 (M. T. James), female.Nomia (Epinomia) triangulifera VachalColorado: Crowley, Sept. 1, 1932 (M. T. James), male.Nomia bakeri CockerellColorado: Crowley, Sept. 1, 1932 (M. T. James). Three females;one is var. rufibasis Cockerell.19331 3

Rocky Mountain bees.

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