Tachyusa faceta Casey, 1885

Pa ṡnik, Grzegorz, 2006, A revision of the World species of the genus Tachyusa Erichson, 1837 (Coleoptera, Staphylinidae: Aleocharinae), Zootaxa 1146, pp. 1-152 : 139-142

Tachyusa faceta Casey, 1885 ( Figs. 144–146)

Tachyusa faceta Casey, 1885: 302 .

Tachyusa vespertina Casey, 1906: 212 .

Tachyusa faceta: Casey, 1906: 212 .

Tachyusa vaciva Casey, 1911: 175 .

Tachyusa (s. str.) faceta: Bernhauer & Scheerpeltz, 1926: 585 (as valid species).

Tachyusa (s. str.) vespertina: Bernhauer & Scheerpeltz, 1926: 585 (as synonym of T. faceta ). Tachyusa (s. str.) vaciva: Bernhauer & Scheerpeltz, 1926: 585 (as synonym of T. faceta ).

Type material. Tachyusa faceta Casey. Lectotype (here designated): ♂: California, type USNM 38958 ( USNM). Paralectotype: ♂: California, type USNM 38958 ( USNM).

Tachyusa vespertina Casey. Holotype: ♂: California, Los Angeles Co., 25.V.91, type USNM 38957 ( USNM).

Tachyusa vaciva Casey. Holotype: ♂: California, Dunsmuir, Wickham , type USNM 38959 ( USNM).

Additional material. CANADA. Saskatchewan: Prince Albert, North Saskatchewan River , 28.VI.1975, L. & N. Herman, 1 ex ( AMNH) . MEXICO. Chihuahua, Rio Florido , 22.IX.1974, 1 ex ( MNHN) . UNITED STATES. California: Burbank , 28.IV.1918, 1 ex ( CAS) ; Kern Co., 12.2 mi NEE of Lake Isabella, South Fork Kern River, 2700 ft., 31.V.1981, L. Herman, 2 exx ( AMNH) ; Licking Fork, Mokelumne River , 2900–3100 ft., Blaisdell­Letcher, 1 ex ( CAS) ; Los Angeles , 21.IV.1918, J. O. Martin, 1 ex ( CNC) ; Mariposa Co., 12 mi N Mariposa, Bear Creek at Merced River , 1300 ft., 28.V.1981, L. Herman, 3 exx ( AMNH) ; 1 ex ( ISEA); Calaveras Co., Mokell Hill , 6 exx ( CAS) ; Pasadena, A. Fenyes , 3 exx ( FMNH) ; 29.VIII.1897, 1 ex ( CAS) ; Riverside Co., Idyllwild, Strawberry Creek , 5300 ft., 3.VI.1981, L. Herman, 3 exx ( AMNH) ; 1 ex ( ISEA); Riverside Co., 12.9 mi SE Idyllwild, Morris Creek , 4500 ft., 3.VI.1981, L. Herman, 1 ex ( ISEA) ; San Bernardino Co., 2900 ft., Victorville, Mojave River , 14.V.1981, L. Herman, 1 ex ( AMNH) ; San Diego Co., 7.5 mi E Julian, Banner Creek , 2700 ft., 2.V.1981, L. Herman, 32 exx ( AMNH) ; 2 exx ( ISEA); San Diego Co., Descanso, Sweetwater River , 3200 ft., 9.V.1981, L. Herman, 2 exx ( AMNH) ; San Diego Co., 1 mi S Lakeview, Los Coches Creek , 4.V.1981, L. Herman, 18 exx ( AMNH) ; 1 ex ( ISEA); San Diego Co., Mission Valley, San Diego River , 5.V.1981, L. Herman, 1 ex ( AMNH) ; San Diego Co., 15 mi E Oceanside, San Luis Rey River , 200 ft., 10.V.1981, L. Herman, 5 exx ( AMNH) ; Tulare Co., 23 mi N Krenville (Kern Co.), South Creek , 4600 ft., 30.V.1981, L. Herman, 2 exx ( AMNH) ; Ventura Co., 9 mi SEE Ojai, Sisar Ck. , 1200 ft., 23.V. 1981, L. Herman, 2 exx ( AMNH) . Colorado: Deer Creek , 3 exx ( CAS) ; Gunnison Co., 45 mi NEE Delta (Delta Co.), Paonia Reservoir State Recreation Area , 6800 ft., 23.V.1982, L. Herman, 2 exx ( AMNH) ; Huerfano Co., 8 mi SSW La Veta, Cucharas River , 7800 ft., 18.VIII.1982, L. Herman, 55 exx ( AMNH) ; 4 exx ( ISEA); La Plata Co., 2 mi W Durango, Rt. 160, 1.VIII.1965, L. Herman, 1 ex ( AMNH) ; Weld Co., Platteville St., Vrain Nuclear Site , 29.VIII.1974, Wayne Brewer, 2 exx ( SEMC) . Illinois: Livingston Co., W of Cornell, Wagner Farm, 25.VII.1967, 1 ex ( MCZ) ; West Sprgs. , 2 exx ( MCZ) ; 26.VI.1944, N. M. Downie, 1 ex ( FMNH) . Indiana: Allen Co., Fort Wayne, St. Mary's River , 3.VIII.1964, J. & W. Ivie, 3 exx ( AMNH) . Kansas: Douglas Co., 7.2 km S Lawrence, 19.V.1992, Ashe, 4 exx ( SEMC) ; Lawrence , 17 exx ( AMNH) ; 1 ex ( MCZ); Leavenworth Co., 4 exx ( AMNH) ; Sheridan Co., Tasco, S Fork Salomon River , 3.VIII.1965, L. Herman, 5 exx ( AMNH) ; Sheridan Co., 6 mi W Tasco , 3.VIII.1965, L. Herman, mud flats of creek, 13 exx ( AMNH) ; 2 exx ( ISEA). Montana: Meagher Co., 23 mi NE White Sulphur Springs , 23.VIII.1970, L. Herman, 2 exx ( AMNH) ; Broadwater Co., 2 mi S Townsend , 22.VIII.1970, L. Herman, 1 ex ( AMNH) ; Broadwater Co., Townsend , Missouri River , 22.VIII.1970, L. Herman, 1 ex ( AMNH) . Nebraska: Sheridan Co., 14 mi S Hay Springs, Niobrara River , 5.IX.1970, L. Herman, 1 ex ( AMNH) ; Cherry Co., 3 mi NE Valentine, Niobrara River , 23.VIII.1974, R. T. Schuh, 1 ex ( AMNH) . Nevada: Reno, Wickham , 2 exx ( CAS) ; 3 exx ( MCZ). New Mexico: Doña Ana Co., 1 mi NE Hatch, 8.V.1968, L. Herman, shore of Rio Grande , 4050 ft., 2 exx ( AMNH) . Oklahoma: Caddo Co., 5 mi S Hinton Red Rock Canyon State Park , 5.V.1986, L. Herman, 2 exx ( AMNH) ; Latimer Co., IX.1986, Karl Stephan, 1 ex ( SEMC) . South Dakota: Pennington Co., 5–7 mi SSW Hill City, Spring Creek , 5550 ft., 16.VI.1981, L. Herman, 27 exx ( AMNH) ; 2 exx ( ISEA); Custer Co., 7 mi W Custer, Wabash Spring , 5800 ft., 17.VI.1981, L. Herman, 1 ex ( AMNH) . Utah: Summit Co., 8.4 mi SEE of Kamas Beaver Creek , 7400 ft., 10.VI.1981, L. Herman, 1 ex ( AMNH) . Washington D.C.: 9.V.1906, 1 ex ( USNM) . Wisconsin: Ashland Co., 3 mi E Clam Lake, Dingdong Creek , 1.V.1978, L. & N. Herman, 1 ex ( AMNH) . Wyoming: Sheridan Co., 0.7 mi W Leiter, Clear Creek , 3750 ft., 26.VII.1978, L. & N. Herman, 4 exx ( AMNH) ; Fremont Co., 2 mi SE Lander, Squaw Creek , 5600 ft., 12.VI.1981, L. Herman, 2 exx ( AMNH) ; Fremont Co., 13.5 mi SE Lander Twin Creek , 5500 ft., 13.VI.1981, L. Herman, 31 exx ( AMNH) ; 3 exx ( ISEA).

Redescription. Body. Length 2.5–2.9 mm, convex, parallel­sided, glossy; body colour brown to pitchy brown, abdomen black with two basal tergites reddish brown, legs red, antennae brown with antennomeres 1–3 red.

Head circular in outline, convex, eyes large, moderately protruding from lateral contours of head, length of each seen from above subequal to that of postocular region; surface of head without microsculpture; puncturation fine and moderately dense. Antennae long, clearly increasing in width apically, antennomeres 2 and 3 subequal in length, antennomeres 4–7 longer than wide, antennomeres 8–10 sexually dimorphic, quadrate in

male and slightly transverse in female, antennomere 11 nearly conical.

Pronotum quadrate, lateral sides gradually narrowed in straight line to obtuse hind angles; before base with small and shallow transverse impression; surface without microsculpture; puncturation fine, dense and asperate; pubescence at midline directed posteriorly.

Elytra subquadrate, at suture as long as pronotal length at midline; surface lacking microsculpture; puncturation fine, dense and asperate.

Abdomen parallel­sided, bases of tergites 3–5 each with deep transverse impression, impressions with 7–8 longitudinal ridges and distinct median carina, tergal puncturation fine and moderately dense, punctures moderately small and well visible, surface without microsculpture.

Male. Aedeagus as in Figs. 144–145.

Female. Spermatheca as in Fig. 146.

Remarks. See under T. americana .

Distribution. Tachyusa faceta is widely distributed throughout the United States and also recorded from Mexico and Canada.