Culicoides Latreille and Leptoconops Skuse biting midges of the southwestern United States with emphasis on the Canyonlands of southeastern Utah (Diptera: Ceratopogonidae) Author Phillips, Robert A. 2962 Desert Road Moab, UT 84532 USA text Insecta Mundi 2022 2022-01-28 2022 907 1 214 journal article 10.5281/zenodo.6391684 1942-1354 6391684 CBD29188-143B-44DF-BE21-1654D50D8621 Leptoconops ( Holoconops ) atchleyi Clastrier and Wirth Leptoconops ( Holoconops ) atchleyi Clastrier and Wirth, 1978: 32 (key; female, male; fig. female antenna, palpus, spermathecae, male genitalia, gonostyli, palpus; California ). Diagnosis. ( Table 13 ) Body, femora, tibiae blackish, tarsomeres slightly paler; clypeus with four setae, median pair ≥0.8 as far apart from each other as from corresponding lateral setae and out-of-line distad of lateral setae by <0.3 their distance apart (as in Fig. 10 L . knowltoni ); palpal segment 3 sensory pit as deep as wide, broadening internally on female (as in Fig. 31 L . sublettei ); mid tarsomere 1 often with submedian spine. Female: stigma triangular, pointed; antenna with 11 flagellomeres; flagellomere 11 with submedian black seta; flagellomere 4 dorsal hyaline sensory seta distal and medial to long black seta, out of axial alignment with corresponding sensory setae on flagellomeres 5–10 (as in Fig. 30 L . sublettei ); palpal segment 3 sensory pit opening half the diameter of the interior (as in Fig. 31 L . sublettei ); hind tarsomere 3 ~1.7× longer than 5; spermathecae slightly pyriform, without caplike diverticulum (as in Fig. 29 L . americanus ); cerci>3× longer than wide ( Fig. 1 ). Male: tergite 9 with distal shoulders abruptly narrowed to base of adjacent apicolateral processes, without dorsal process, ventro-posterior setae separated by ~2× as much as separation of apicolateral processes (as in Fig. 20 L . knowltoni ); gonostylus with three ventral setae spread over 0.2–0.6 of gonostylus length (as in Fig. 22 L . knowltoni ); gonostylus apical lamelliform expansion barely covering apical tooth; tarsomere 5 basal seta short, erect, curved (as in Fig. 26 L . foulki ). Distribution. California (San Joaquin, Solano counties). Adult behavior. Thirteen females were collected by E. T. Schmidtmann from a calf in a creek bed ( Clastrier and Wirth 1978 ). Remarks. No L . atchleyi were examined.