332 PROCEEDENGS OF THE NATIONAL MUSEUM vol. 109 



stigmatic pale spots fused and the distal pale spot in cell R5 not 

 reaching wing margin and the pale spots in anal cell well separated, 

 the mesonotum is dark brown and the hind femur is dark to the tip. 

 The presence in daedaloides of antennal sensory tufts on segments 

 viiT-x, the broad, shallow palpal pit, the transverse distal pale spot 

 in anal cell and the sparsely hairy wings would exclude this species 

 from the daedalus group and thus its true relations are still unknown. 



The copiosus group 



This group consists of small species with very hau-y wing; the wing 

 pattern of well-defined, rounded pale spots, a pale spot usually present 

 straddling middle of vein M2 or lying just in front of this vein and 

 often with a similar spot on vein Mi; pale spot in cell M4 usually 

 widened toward vein M34.4, crossvein r-m never darkened; female pal- 

 pus with third segment greatly swollen and bearing a deep sensory pit 

 usually opening by a smaller pore; spermathecae two; four tibial 

 spines; male genitalia with dorsal and ventral roots of the basist3de 

 simple, the ventral root never foot-shaped, parameres short with basal 

 knob directed laterad, stem swollen at base, without ventral lobe, 

 the apex slender, simple and often twisted, aedeagus usually short 

 and broad, the basal arch usually low, the basal arms stout. 



Panama species: Four: jamaicensis Edwards; panamensis Barbosa; 

 pilosus, new species; and poikilonotus Macfie. (Other Neotropical 

 species belonging to this group include borinqueni Fox and Hoffman, 

 copiosus Root and Hoffman, loughnani Edwards and propinquus 

 Macfie. Ryckman and Ames (1953) reared copiosus from rotting 

 stems of cactus in Arizona.) 



28. Culicoides pilosus, new species 



Figure 31 



Female: Length of wing 0.99 (n=3) mm. 



Head. — Eyes broadly separated, bare. Antenna with flagellar seg- 

 ments in proportion of 18:12:12:12:13:13:13:14:28:28:32:33:46, 

 antennal ratio 1.56; distal sensory tufts present on segments iii-ix 

 and xi-xv. Palpal segments in proportion of 10:20:30:9:10, third 

 segment greatly swollen, 2.0 (1.9-2.1, n = 3) times as long as greatest 

 breadth, with a large, very deep, sensory pit opening by a small pore. 

 Mandible with 17 (16-18, n=3) teeth. 



Thorax. — Mesonotum yellowish brown, with a moderately promi- 

 nent pattern of large dark brown patches; a narrow median anterior 

 line and a pair of lateral, broad bands at sutural level the most promi- 

 nent; prescutellar area and anterior lateral margins also dark. Scutel- 

 lum dark brown in middle, yellowish brown on sides; postscutellum 



