292 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



Panama records: 



BocAS DEL ToRO PROVINCE: Almiraiite (tj^pe locality). 

 Canal Zone: Fort Kobbe, Loma Boracho, Mojinga Swamp. 

 CniRiQuf Province: La Concepci6n. 

 PanamX Province: Camar6n, Pedregal. 



Discussion: This species is a typical member of the subgenus 

 Culicoides (Avaritia), with the second radial cell distinctly pale on the 

 apical half, thus easily separable from its closest relative, pusillus 

 Lutz. 



9> Culicoides pusillus Lutz 



Figure 12 



Culicoides pusillus Lutz, 1913, Mem. Inst. Oswaldo Cruz, vol. 5, p. 52 (male, 

 female; Manguinhos, Rio de Janeiro, Brazil; fig. female wing). — Macfie, 

 1938, Proc. Roy. Ent. Soc. London, vol. 7, p. 165 (Trinidad; fig. male geni- 

 talia). — Barbosa, 1947, Anais Biol. Soc. Pernambuco, vol. 7, p. 25 (Panama, 

 Jamaica). — Macfie, 1948, Ann. Trop. Med. Parasit., vol. 42, p. 79 (Chiapas, 

 Mexico). — Ortiz and Mirsa, 1952, Rev. Sanid. Asist. Soc, vol. 16, p. 603 

 (male, female; Venezuela; fig. eyes, antenna, palpus, spermathecae, wing, 

 male genitalia). — Ortiz and Leon, 1955, Bol. Inf. Cient. Nac. Ecuador, no. 

 67, p. 570 (Ecuador).— Wirth, 1955, Proc. Ent. Soc. Washington, vol. 57. 

 p. 110 (Guatemala). 



Female: Length of wing 0.64 (0.56-0.69, n=8) mm. 



Head. — Eyes narrowly contiguous, with long interfacetal hairs. 

 Antenna with flagellar segments in proportion of 11:6:6:7:7:7:7:7:11: 

 11 : 13 : 13 :20, antennal ratio 1.18 (1.15-1.26, n=7) ; distal sensory tufts 

 present on segments iii, xiii-xv. Palpal segments in proportion of 

 5:17:19:8:8, third segment only slightly swollen, 2.6 (2.2-2.8, n=8) 

 times as long as greatest breadth, with a small, deep sensory pit. 

 Mandible with 14 (13-15, n=10) teeth. 



Thorax. — Mesonotum blackish, densely bluish to greenish gray 

 pruinose, with two narrow, longitudinal sublateral black vittae. 

 Scutellum, postscutellum and pleuron blackish. Legs pale brown, 

 knee spots blackish; fore and mid femora with subapical, all tibiae 

 with subbasal and hind tibia with apical, broad pale bands; hind 

 tibial comb with five (n = 5) spines, the one next to the spur longest. 



Wing. — Pattern as figured; large quadrate pale spots at anterior 

 wing margin over r-m cross vein and past end of second radial cell, 

 remainder of wing without distinct pale spots, but obscurely paler 

 between the veins. Macro trichia absent, costa extending to 0.53 

 (0.52-0.53, n=8) of distance to wing tip. Halter whitish. 



Abdomen. — Pale brown. Spermathecae two, slightly ovoid, sub- 

 equal, measuring 0.043 by 0.031 mm., the bases of the ducts sclerotized 

 a very short distance. 



