Culicoides hawsi Wirth and Rowley

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 : 103

Culicoides hawsi Wirth and Rowley

( Fig. 91 , 145, 224, 276)

Culicoides hawsi Wirth and Rowley, 1971: 159 (numerical characters; key; female, male; fig. female antenna, palpus, eye separation, spermathecae, male genitalia, parameres; Washington, Utah: Cache, Uintah counties). Wirth et al. 1985: 26 (numerical characters; fig. female wing).

Diagnosis. ( Tables 14, 15) Wing pattern reduced; r 2 dark; distal pale spots faint or absent from r 3, m 1, m 2; scutellum about same brown as scutum; faint pale band apical on fore femora; fore and hind tarsomeres with apical spines; spermathecae unequal by ≥1.3; elongate, sometimes faint; sclerotized ring on spermathecal duct; ventral apodeme of gonocoxite simple; gonostylus about evenly curved, not abruptly bent, entire lateral contour convex; aedeagus V-shaped, median process tapering to tip ~0.4 as wide as basal arm spread; parameres separate, apices abruptly bent ventro-laterally with simple sharp tip.

Distribution. Washington, Oregon, California, Utah (Cache, Grand, Uintah counties).

Adult behavior. The mandibular and lacinial teeth on the female and collection in CO 2 -baited traps indicate it feeds on vertebrate blood; however, its hosts are unknown.

Figures

Figures 88–93. Male genitalia of Culicoides, ventral view. 88) C. luglani, submedian processes of parameres circled. 89) C. crepuscularis, ventral apodeme of gonocoxite circled. 90) C. calexicanus, apices of parameres circled, apex of aedeagus delineated. 91) C. hawsi (paratype, Modoc County, CA [FSCA]). 92) C. palmerae, sharp lateral shoulders on median process of aedeagus indicated (A). 93) C. utahensis.