372 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io9 



stem stout and curving on basal portion, gradually tapering distad 

 to a slender simple point curving ventromesally. 



Distribution: French Guiana; Brazil; Panama; Trinidad. 



Panama records: 



Canal Zone: Balboa (June 23, Sept. 4, 1942, P. A. Woke), Empire (A. H. 



Jennings, coll.). Fort San Lorenzo, Fort Sherman, France Field, Loma Boracho, 



Mindi Dairy, Mojinga Swamp. 

 Panama Province: Arraijdn, Bayano. 



Discussion : This species is not closely related to any other known 

 species, but somewhat resembles furens (Poey) and lanei Ortiz in 

 wing pattern. The remarkable structure of the male aedeagus is 

 distinctive and suggests relations with the species phlebotomus 

 (Williston) and willistoni Wirth and Blanton of the subgenus Culi- 

 coides (Macjiella). 



45. Culicoides venezuelensis Ortiz and Mirsa 



Figure 48 



Culicoides venezuelensis Ortiz and Mirsa, 1950, Arch. Venez. Pat. Trop. Parasit. 

 Med., vol. 2, p. 137 (male, female; Venezuela; fig. wing, palpus, antenna, 

 spermathecae, male genitalia). — Wirth, 1955, Rev. Chilena Ent., vol. 4, 

 p. 234 (synonyms, pictipennis (Philippi) 1865 preoccupied, and ortizi 

 Fox). 



Psychophaena pictipennis Philippi, 1865, Verh. Zool.-Bot. Ges. Wien, vol. 15, 

 p. 628 (Chile; female; fig. wing). Preoccupied in Culicoides by pictipennis 

 (Staeger) 1839. 



Culicoides ortizi Fox, 1952, Ann. Ent. Soc. Amer., vol. 45, p. 366 (female; Vene- 

 zuela; fig. wing, palpus, antenna, tibial comb, spermathecae). 



Female: Length of wing 1.37 (1.29-1.48, n = 10) mm. 



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

 segments in proportion of 20:15:15:15:16:16:16:16:26:26:28:30:37, 

 antennal ratio 1.19 (1.13-1.26, n=4); distal sensory tufts present on 

 segments iii, xi-xiv alwaj^s, and also variably on segments v to x. 

 Palpal segments in proportion of 11:22:36:8:15, third segment 

 moderately swollen, 2.1 (1.9-2.2, n = 10) times as long as greatest 

 breadth, with a broad, shallow, sensory pit. Mandible with 13 

 (13-14, n = 9) teeth. 



Thorax. — Mesonotum densely grayish pruinose, with a prominent 

 pattern of numerous punctiform brown dots at the seta bases, those 

 in midline and on sublateral rows more or less coalescing to form 

 indistinct vittae. Scutellum pruinose gray, narrowly brown in middle 

 and on extreme sides; postscutellum dark brown with pruinose gray 

 patches, pleuron dark brown. Legs dark brown; fore and mid femora 

 with subapical, all tibiae with subbasal and hind tibia with apical 

 narrow pale rings; hind tibial comb with five (n=9) spines, the second 

 from the spur longest. 



