no. 3626 CULICOIDES — WIRTH AND LEE 15 



at the r-m crossvein lying entirely distal of the crossvein. Its closest 

 Neotropical relative is C. iriartei Fox, a lowland species that has 

 similar male genitalia but within which the wing pattern is much 

 different, with the pale spot centered over the r-m crossvein and a 

 double pale spot distally in cell K5. The North American C. baueri 

 Hoffman and G. haematopotus Malloch have very similar male genitalia, 

 but these also differ greatly in wing pattern. 



We are very pleased to name this species in honor of Dr. C. J. 

 Marinkelle, parasitologist at the Universidad de los Andes in Bogota, 

 Colombia, in recognition of his keen interest in Colombian haema- 

 tophagous Diptera. 



Subgenus Oecacta Poey 



As it stands, this subgenus is a heterogeneous assemblage of species 

 groups that cannot yet be assigned definitely to the existing subgenera 

 in which the second radial cell is dark to the apex. In the strict sense, 

 this subgenus should be restricted to those species resembling the type 

 species, C. furens (Poey), with two well-developed spermathecae, a 

 rudimentary third and a ring; antennal sensoria on segments in, 

 viii-x, or similar pattern, none on xi-xv; and male genitalia with 

 long apicolateral processes on the ninth tergum, and a strong basal 

 knob and subapical fringing spines on the parameres. 



Culicoides monticola Wirth and Lee, new species 



Figures 5a-d; Plate 1 (fig. 6) 



Female.— Length of wing 1.31 (1.23-1.39, n=7) mm. 



Head: Eyes bare, narrowly separated (fig. 5a), interocular space 

 above with a seta-less tubercle. Antenna (fig. 56) with lengths of 

 flagellar segments in proportion of 18-15-16-17-17-16-16-16-20-21- 

 25-25-34, antennal ratio 0.95 (0.93-0.98, n=3); distal sensory tufts 

 present on segments in, xi-xiv; iii-x prominently bicolored, the 

 narrow apices dark, xi-xv all dark. Palpal segments (fig. 5d) with 

 lengths in proportion of 11-18-24-8-12; third segment distinctly 

 swollen, 2.0 (1.8-2.3, n=8) times as long as greatest breadth, with a 

 moderately large, deep, round sensory pit opening by a smaller pore. 

 Proboscis short, P/H ratio 0.65; mandible with 15 (13-16, n=ll) 

 teeth. 



Thorax: Brownish, scutum with prominent markings of large 

 yellowish areas. Legs dark brown with very prominent markings; 

 knee spots blackish, all femora with subapical and all tibiae with 

 sub-basal, narrow pale rings, hind tibia with distal half pale; hind 

 tibial comb with 4 spines, the one nearest the spur longest. 



Wing (pi. 1 : fig. 6) : Pattern as figured; with very prominent pattern 

 of large pale spots coalescing transversely to form 5 irregular pale 



