Leptoconops (Holoconops) atchleyi Clastrier and Wirth

Phillips, Robert A., 2022, Culicoides Latreille and Leptoconops Skuse biting midges of the southwestern United States with emphasis on the Canyonlands of southeastern Utah (Diptera: Ceratopogonidae), Insecta Mundi 2022 (907), pp. 1-214 : 22

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.

Figures

Figures 9–15. 9) Leptoconops americanus female clypeus, setae (s). 10) L. knowltoni female clypeus. 11) L. knowltoni female palpal segment 3. 12) L. carteri female palpal segment 3 (Yolo County, CA). 13) L. werneri female tarsomeres 4–5 and claw (paratype, Imperial County, CA [UCRC]). 14) L. werneri male genitalia, ventral view, tergite 9 apicolateral processes (T9alp), meso-posterior lobe setae (s) (Riverside County, CA [UCRC]). 15) L. belkini male genitalia, ventral view, tergite 9 sclerotized lobe (L) (Riverside County, CA [UCRC]).

Figures 27–32. Female Leptoconops. 27) L. knowltoni flagellomeres 9–11, median black seta (s). Spermathecae (sp), diverticulum (d), neck (spn). 28) L. foulki. 29) L. americanus. 30) L. sublettei flagellomeres 3–6, flagellomere 4 seta bases (sb), hyaline sensory seta (hss). Palpal segment 3. 31) L. sublettei. 32) L. foulki.

Figures 1–2. Female lateral habitus (in alcohol). 1) Leptoconops (Holoconops) Kerteszi group. 2) Culicoides (Monoculicoides) sonorensis.

Figures 20–26. 20) Leptoconops knowltoni male genitalia, ventral view, aedeagus (A), parameres (P), tergite 9 ventro-posterior setae (s), apicolateral processes (T9alp), gonostylus apical lamelliform expansion (Gsle). 21) L. foulki male genitalia, ventral view. 22) L. knowltoni gonostylus, ventral setae (vs). 23 L. foulki gonostylus. 24) L. foulki parameres (P), proximal tooth (t). Male tarsomere 5, basal seta (bS). 25) L. knowltoni. 26) L. foulki.