BITING MIDGES — WIRTH AND BLANTON 267 



Cell R5 with a small round distal pale spot lying between the post- 

 stigmatic pale spot and the distal pale spot; cell Mi with distal pale 

 spot located far from wing margin; mesonotum grayish green pol- 

 linose, without pattern or with small brown punctiform dots, fourth 

 tarsomere cordiform 43 



41. Cell Rs with distal pale spot filling apex of cell; cell Mi with distal 



pale spot broadly reaching wing margin. 



tenuilobus new species (p. 354) 



Cell R5 with distal pale spot transverse, located far from apex of cell; 



cell Ml with distal pale spot lying far from wing margin .... 42 



42. Mesonotum grayish pruinose with dark brown patches; anal cell with 



distal pale spot not double; hind femur dark at apex. 



evansi, new species (p. 342) 



Mesonotum yellowish brown pruinose with H-shaped marking of 



brown lines; anal cell with distal pale spot double; hind femur with 



subapical pale ring .... daedaloides, new species (part) (p. 330) 



43 (40). Mesonotum with pattern of prominent punctiform brown dots. 



willistoni Wirth and Blanton (p. 471) 

 Mesonotum uniformly grayish green pollinose, sometimes with a pair 

 of faint, brownish, sublateral longitudinal lines. 



phlcbotomus (Williston) (p. 469) 



44 (37). Cell Mi with two pale spots past the pale spot straddling vein M2; 



cell R5 with six small round pale spots. 



venezuelensis Ortiz and Mirsa (part) (p. 372) 



Cell Ml with only one distal pale spot; cell R5 with less than four pale 



spots 45 



45. Cell Rs with a small, elongate pale spot present lying adjacent to vein 



Ml on its midportion 46 



Cell R5 without pale spot lying adjacent to vein Mi on its midpor- 

 tion 48 



46. Apices of veins Mi, M2 and M3+4 with a pale spot at wing margin; 



cell Rs with pale spot lying in front of vein Mi located between 



poststigmatic and distal pale spots 47 



Apices of veins Mi, M2 and M3+4 dark; cell R5 with pale spot lying in 

 front of vein Mi located at same level as poststigmatic pale spot. 



dunni, new species (part) (p. 328) 



47. Cell Rs with distal pale spot crescent-shaped, concave on distal side; 



mesonotum with pattern of three broad, longitudinal bands and 

 associated small brown dots; hind femur and tibia dark. 



crescentis, new species (p. 317) 

 Cell Rs with distal pale spot transversely oval, not concave on distal 

 side; mesonotum with pattern of narrow, reticulated brown lines; 

 hind femur with subapical and hind tibia with apical pale rings. 



poikilonotus Macfie (part) (p. 337) 



48 (45). Cell Mi with distal pale spot lying far from wing margin 49 



Cell Ml with distal pale spot nearly or quite reaching wing margin . 50 



49. Anal cell with distal pale spots well separated and obliquely located; 



hind femur dark at apex; poststigmatic pale spots in cell R5 fused; 



wing very hairy to base daedalus Macfie (p. 319) 



Anal cell with distal pale spots fused in a transverse double spot; hind 

 femur with subapical pale ring; poststigmatic pale spots in cell R5 

 separated; wing with sparse hairs on distal third. 



daedaloides, new species (part) (p. 330) 



