274 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io9 



spot present anterior to base of vein Mi; apices of veins Mi and Mo 

 and usually of veins M3+4 and Cui pale; antennal sensoria present on 

 segments iii, xi-xv; six spines in hind tibial comb; male parameres 

 fused basally for over half their lengths, the bases joined in a broad, 

 platelike structure. 



Panama species: Three: heliconiae Fox and Hoffman, hylas Macfie, 

 and verecundus Macfie. 



1. Ciilicoides heliconiae Fox and HofTman 



Figure 4 



Culicoides sp. Fox, 1942, Puerto Rico Journ. Pub. Health Trop. Med., vol. 17, p. 

 418 (pupa; Venezuela; fig. respiratory horn, anal segment). 



Culicoides heliconiae Fox and Hoffman, 1944, Puerto Rico Journ. Pub. Health 

 Trop. Med., vol. 20, p. 108 (male, female; Maracay, Venezuela; reared from 

 bromeliads; fig. wing). — Fox, 1948, Proc. Biol. Soc. Washington, vol. 61, p. 

 22 (male, female; fig. palpus, male aedeagus, parameres; Trinidad, Hon- 

 duras). — Ortiz, 1950, Rev. Sanid. Asist. Soc, vol. 15, p. 450 (discussion). — 

 Wirth and Blanton, 1956a, Journ. Washington Acad. Sci., vol. 46, p. 95 

 (male, female; fig. wing, palpus, spermathecae, male genitalia; synonym, 

 rozehoomi). 



Culicoides rozehoomi Barbosa, 1947, Anais Soc. Biol. Pernambuco, vol. 7, p. 26 

 (male, female; Trinidad, Peru, Panama; fig. palpus, mesonotum, wing, male 

 genitalia). 



Culicoides verecundus Macfie of Ortiz, 1942, Rev. Sanid. Asist. Soc, vol. 17, p. 

 259 (male, female; Miranda, Venezuela; fig. female antenna, spermathecae, 

 wing, male palpus, genitalia; verecundus Macfie [=palpalis Macfie], ? = 

 heliconiae Fox and Hoffman). 



Female: Length of wing 1.46 (1.22-1.68, n=26) mm. 



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

 in proportion of 22:20:20:20:20:20:20:20:25:26:32:34:48, anten- 

 nal ratio 1.04-1.09; distal sensory tufts present on segments iii, 

 xi-xv. Clypeus much elongated, bases of palpi arising far below 

 level of ventral eye margin. Palpal segments in proportion of 

 6:21:30:15:12, third segment slender, 3.3 (2.8-5.7, n=18) times as 

 long as greatest breadth, without sensory pit. Mandible with 23 

 (18-26, n = 26) teeth. 



Thorax. — Blackish, mesonotum with large median area and other 

 small areas dark pruinose gray, lateral margins and a sublateral pair 

 of short bands velvety black; humeri whitish. Legs black; mid knee 

 narrowly pale on each side of joint, fore femur with subapical, fore 

 tibia with subbasal and hind tibia with basal and apical, narrow pale 

 rings; hind tibial comb with 6 spines, the second from the spur the 

 longest. 



Wing. — Pattern as figured, apices of veins M3+4 and Cui usually 

 pale, the pale spot in cell M4 continued proximad along vein M3+4 to 

 base of fork. Macrotrichia sparse in apices of cells R5, Mi and M2; 



