18 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 124 



proximal one longer; cell M2 with large pale area between medial and 

 mediocubital forks broadly separated from pale basal area of wing 

 continued distally as a narrow streak to level of pale spot in cell M4, 

 a small round pale spot at apex of cell not quite meeting wing margin ; 

 cell M4 with large, round pale spot nearly filling distal portion of cell; 

 anal cell with 1 large pale spot in distal portion; apices of veins Ml 

 and M2 faintly pale at wing margin. Macrotrichia numerous on distal 

 portion of wing, continued proximally through anal cell and in a double 

 row to base of cell M2; costa extending to 0.57 of distance to wing tip; 

 radial cells with distinct lumens, the second much broader and slightly 

 shorter than the first. Halter infuscated. 



Abdomen: Dark brown. Spermathecae 2 plus a rudimentary third 

 and a ring; subequal, each measuring 0.065 x 0.040 mm, slightly ovoid 

 with long, slender, sclerotized necks. 



Male. — Similar to the female, with the usual sexual differences. 

 Wing length 1.33 mm; costal ratio 0.55; distal 5 antennal segments 

 with lengths in proportion of 13-17-48-37-29; palpal segments (fig. 

 be) with lengths in proportion of 6-15-19-8-13; pale wing pattern 

 (pi. 1 : fig. 7) more extensive than in female, the pale spots coalescing on 

 disc of wing to form 2 complete middle transverse bands, pale spots at 

 apices of veins Ml and M2 conspicuous. Genitalia (figs. 5/, g) : Ninth 

 sternum without caudomedian excavation, the ventral membrane not 

 spiculate; ninth tergum long and tapering, the apicolateral processes 

 long and slender, the caudal margin between them transverse. Basistyle 

 long and slender, ventral root "foot-shaped," dorsal root slender; 

 dististyle slender with distally bent tip. Aedeagus with high basal 

 arch extending to over one-half of total length, the ventral arms nearly 

 straight, forming with the tapering distal stem a V-shaped structure, 

 stem slender distally with a pair of very faintly sclerotized subapical 

 points. Parameres each (fig. 5/) with strong basal knob, midportion 

 slender, slightly sinuate, without ventral lobe, distally narrowed and 

 curved ventrad with a subapical fringe of 3-4 fine barbs. 



Types. — Holotype female, allotype male: Finca Carpenteria, El 

 Tambo, Cauca, Colombia, 2500 m, July 9, 1964, V. H. Lee, light trap 

 USNM, type no. 69402. Paratypes: 1 female, 18 km east of Purace, 

 3320 m, Oct. 29, 1964, V. H. Lee, at light; 1 male, 28.4 km east of 

 Purace, 3100 m, Feb. 18, 1965, V. H. Lee, at light. 



Remarks. — This species is very closely related to C. monticola but 

 can be distinguished readily by its reduced, pale wing markings, with 

 only 1 pale spot distally in anal cell, the palpal pit shallower with 

 pore not narrowed, sensorial pattern in, xm-xv, dark halter, and 

 dark apices of hind femur and tibia. 



