BITING MIDGES — WIRTH AND BLANTON 365 



gin densely setose, ventral and dorsal roots short and pointed, slender, 

 subequal in length, and joined together by a dark sclerotization ; disti- 

 style longer than basistyle, moderately stout and straight, with blunt 

 apex. Aedeagus with a broad basal arch extending to two-thirds of 

 total length, the basal arms nearly straight; distal portion very broad 

 and heavily sclerotized with the apex in the form of a mushroom- 

 shaped cap. Parameres each with long, heavily sclerotized, rodlike, 

 laterally directed basal processes, abruptly bent at the base of the 

 stem which is somewhat swollen at the base of the straight midpor- 

 tion and gradually narrowed and only slightly curved to a slender 

 simple tip. 



Distribution: Panama. 



Panama records: 



Canal Zone: Balboa (West Bank, June 26, 1942, P. A. Woke 1021, at light; 



holotype of wokei Fox), Galeta Point, Loma Boracho, Mindi Dairy, Mojinga 



Swamp. 

 CniBiQuf Province: Alanje, Chiriqui. 

 Cocl:6 Province: Puerto Farall6n, Rio Hato. 



Dari^n Province: Garachine, Jaque, Punta Patino (type locality of aethionotus) . 

 Herrera Province: Puerto Chitre. 



Panama Province: Bayano, Chepo, Pedregal, San Carlos, Isla Taboga. 

 Archipi^lago de las Perlas: Isla del Rey. 



Discussion: We are sinking aethionotus in the synonymy under 

 wokei as the result of a direct comparison of the respective holotypes, 

 that of wokei having kindly been loaned to us by Dr. Irving Fox. 



The wing pattern of wokei is very similar to that of galindoi and 

 limai, but the antennal sensorial pattern and structure of the male 

 genitalia make it seem likely that wokei is more closely related to the 

 species of the acotylus group. 



42. Culicoides carsiomelas Wirth and Blanton 



Figure 45 



Culicoides carsiomelas Wirth and Blanton, 1955, Bull. Brooklyn Ent. Soc, vol. 

 50, p. 100 (male, female; Panama; fig. wing, palpus, spermathecae, male 

 genitalia) . 



Female: Length of wing 0.99 (0.96-1.02, n=6) mm. 



Head. — Eyes narrowly separated, bare. Antenna with flagellar 

 segments in proportion of 19:14:14:15:16:16:15:15:20:21:23:23:32, an- 

 tennal ratio 0.96; distal sensory tufts present on segments iii, vii-x. 

 Palpal segments in proportion of 10:19:22:7; 8, third segment broadly 

 swollen, 1.8 (1.6-2.0, n=5) times as long as greatest breadth, with a 

 large, very deep, sensory pit. Mandible with 13 (12-14, n = 5) teeth. 



Thorax. — Mesonotum without prominent pattern, the sides and 

 entire anterior margin to sensory pits dark brown; median area from 



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