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PROCEEDINGS OF THE NATIONAL MUSEUM 



Discussion: This species is closely related to tetrathyris, new species, 

 but propriipennis can easily be distinguished by the presence of a third 

 pale spot at the wing margin in cell Mi, by the second pale spot in 

 the distal portion of cell M2, and by the presence of distal sensory 

 tufts on segments xi-xiv as well as on iii, viii-x. 



63. Culicoides balsapambensis Ortiz and Leon, new status 



Figure 66 



Culicoides pifanoi var. balsapambensis Ortiz and Leon, 1955, Bol. Inf. Cient. 

 Nac. Ecuador, no. 67, p. 579 (female; Balsapamba, Bolivar, Ecuador; fig. 

 wing, palpu.s). 



Female: Length of wing 0.72 (0.66-0.76, n = 5) mm. 



Head. — Eyes narrowly separated, with long interfacetal hairs. An- 

 tenna with flagellar segments in proportion of 15:12:12:14:14:13:14: 

 15:15:15:16:17:26, antennal ratio 0.84 (0.81-0.86, n=2); distal sensory 



Figure 66. — Culicoides balsapambensis Ortiz and Leon, a-e, Female: a, wing; b, thoracic 

 pattern; c, palpus; d, tibial comb; e, spermathecae. /, g, Male:/, parameres; g, genitalia, 

 parameres removed. 



