278 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



CocL^ Province: Chiru, Cocl6, El Retire, El Valle, Puerto Pasado, Puerto 



Farall6n, Penomon^, Rfo Hato, La Venta. 

 Col6n Province: Cativd, Pil6n, Pifia, Salud. 

 Dari]6n Province: Garachin^, Jaqu6. 

 Los Santos Province: Pan de Azucar. 

 Panama Province: Alcalde Diaz, Arraijdn, Camar6n, Cerro Campana, Chepo, 



El Coco, Isla Taboga, La JoUa, Pacora, Rfo Las Lajas, Venado Beach, Vique 



Cove. 

 Veraguas Province: Sapotilla. 



Discussion: The smaller size, black mid knees, hind femur dar' at 

 apex, sensory pits on the palpus will distinguish hylas from heliconiae 

 and verecundus. 



3. Culicoides verecundus Macfie 



Figure 6 



Culicoides verecundus Macfie, 1948, Ann. Trop. Med. Parasit., vol 42, p. 76 (male, 

 female; Chiapas, Mexico; fig. wing). — Wirth and Blanton, 1956, Journ. 

 Washington Acad. Sci., vol. 46, p. 98 (male, female; synonyms, palpalis, 

 contuhernalis; fig. wing, palpus, spermathecae, parameres). 



Culicoides palpalis Macfie, 1948, Ann. Trop. Med. Parasit,. vol. 42, p. 78 (female, 

 Chiapas, Mexico). 



Culicoides rozehoomi var. contuhernalis Ortiz and Leon, 1955, Bol. Inf. Cient. Nac. 

 Ecuador, vol. 67, p. 574 (?) (female; Ecuador; fig. wing, antenna, palpus, 

 spermatheca) . 



Female: Length of wing 1.31 (1.16-1.42, n=19) mm. 



Head. — Eyes contiguous, bare. Antenna with flagellar segments in 

 proportion of 25:20:20:20:20:20:20:22:30:31:36:38:53, antennal ratio 

 1.10 (1.01-1.19, n = 7); distal sensory tufts present on segments iii, 

 xi-xv. Clypeus elongated, palpus arising much below level of 

 ventral eye margins. Palpal segments in proportion of 10:50:57:25:20, 

 third segment very slender, 4.2 (3.2-5.2, n=15) times as long as 

 greatest breadth, without sensory pit. Mandible with 23 (22-27, 

 n=19) teeth. 



Thorax. — Mesonotum dark brown, yellowish medially, with sub- 

 shining brown sublateral vittae, and blackish along anterior and 

 lateral margins; humeri whitish. Scutellum, postscutellum and 

 pleuron dark brown. Legs dark brown; fore and hind knee spots 

 blackish, their femora with broad subapical pale bands and their 

 tibiae with broad basal pale bands; mid femur with apex and mid tibia 

 with base broadly yellow, sometimes a very small black spot on apex 

 of mid femur; hind tibia with apex narrowly pale; hind tibial comb 

 with six spines, the second from the spur longest. 



Wing. — Pattern as figured; pale markings more extensive than in 

 hylas and heliconiae, but apices of veins M3+4 and Cui always dark, 

 pale spot in cell M4 continued proximad along vein M3+4 to base of 



