Leptoconops ( Holoconops ) sublettei Clastrier and Wirth, 1978: 36 Leptoconops ( Holoconops ) kerteszi Culicoides Latreille and Leptoconops Skuse biting midges of the southwestern United States with emphasis on the Canyonlands of southeastern Utah (Diptera: Ceratopogonidae) Phillips, Robert A. Insecta Mundi 2022 2022-01-28 2022 907 1 214 8CHV9 Clastrier and Wirth Clastrier and Wirth [192,899,213,243] Insecta Ceratopogonidae Leptoconops Animalia Diptera 26 25 Arthropoda species sublettei Holoconops  ( Fig. 30, 31)      Leptoconops( Holoconops) sublettei Clastrier and Wirth, 1978: 36(key; female, male; fig. female antenna, palpus, spermathecae, male genitalia, gonostyli, palpus; Texas).   Leptoconops( Holoconops) kerteszi, misidentified: Wirth 1952a: 113(in part; key; female; male genitalia; biology; Montana, Wyoming, Nebraska, Colorado, Utah, New Mexico, Colorado). Fox 1955: 263(key; taxonomy). Jones 1965(collection from sheep).   Diagnosis.( Table 13) Body light brown, femora brown, tibiae paler, fore tibiae broadly yellowish apically, all tarsomeres 1–2 yellowish; 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; mid tarsomere 1 without submedian spine. Female: stigma triangular, pointed; antenna with 11 flagellomeres; flagellomere 11 without 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; palpal segment 3 sensory pit opening half the diameter of the interior; hind tarsomere 3 ~1.7× longer than 5; spermathecae somewhat pyriform, with caplike diverticulum (as in Fig. 28  L. foulki); 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 within 0.4–0.6 of gonostylus length, apical lamelliform expansion barely covering apical tooth (as in Fig. 23  L. foulki); apical dilation of paramere with proximal tooth broadly triangular; tarsomere 5 basal seta long and doubly curved, almost decumbent (as in Fig. 25  L. knowltoni).   Distribution. Wyoming, Montana, North Dakota, south through Utah(Grand, San Juan, Washington( Monarch 2021) counties, new state record), Colorado, Nebraska, and Oklahoma, to California, Arizona, New Mexico, Texas.  Adult behavior. Clastrier and Wirth (1978)reported specimens collected from a magpie nest, and while biting humans, sheep, and deer. I collected six female  L. subletteibiting midday on 30 March 2003in Hunter Canyon, 9 kmsouth-southwest of Moab, San JuanCounty ( 38.4990°N 109.5843°W), and one femalebiting my ear midday on 23 April 2000in Spanish Valley, Grand County ( 38.5274°N 109.4997°W), 7 kmsoutheast of Moab.   Leptoconops subletteihas the longest season of any  Leptoconopsspeciesin Grand County (Table 5), and its bimodal distribution suggests it is bivoltine or has a summer diapause. The abundance of  L. subletteifemales and the absence of males in the collections indicates that traps were not near their larval habitats.   Remarks.  Leptoconops subletteiis most similar to  L. foulki. Primary morphological distinctions for the females are flagellomere 4 sensory seta alignment, palpal segment 3 sensory pit opening diameter, and body and leg color. Based on these characters—principally the flagellar sensory setae alignment— 20 femalesfrom Utahwere identified as  L. sublettei.