184 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 105 



Physoconops (PhysSconops) ornatifrons (Krbbcr) 



Conops ornatifrons Krober, Arch. Naturg., vol. 81, Abt a, Heft 5, p. 148, 1915. 



The cheeks are black in this species, but in some individuals, espe- 

 cially females, the black may be restricted to a small mark. 



Range: Venezuela, BrazU, Peru. 



Material examined: Venezuela: Antimano, June 12, 1926, H. 

 Box, 1 female (USNM). Brazil: Maracaju, July 1937, R. C. Shannon, 

 1 male (USNM); May, 1937, R. C. Shannon, 23 males, 2 females 

 (USNM); Rio de Janeiro, H. S. Lopes, 1 male (USNM); Campinas, 

 Goyaz, collectors Borgmeier and Lopes, 1 male (USNM); Nova Teu- 

 tonia, June 3, 1939, F. Plaumann, 3 males (AMNH); Nova Teutonia, 

 June 3, 1939, June 1, 1939, F. Plaumann, 4 males, 1 female (BM); 

 Amazon, 1 specimen (abdomen off, BM). Peru: Ucayali R., 1 male 

 (cotype, USNM); Chosica, May 9, Townsend, 1 male (USNM); 

 Verrugas Canyon, July 9, 1913, Townsend, 1 male (USNM); Lima, 

 January 1949, Aguilar, 1 male (USNM). 



Key to New World species of Conops, Mallochoconops, and Physoconops 



1. Wing pattern rufous to reddish brown at least at base 2 



Wing pattern black to j^ellowish brown, or absent 10 



2. Head entirely reddish or yellowish 3 



Head with some black 5 



3. Larger, 20-21 mm P. ramondi (Bigot) 



Smaller, 10-12 mm 4 



4. Abdominal segment 2 entirely or partly black .... P. pictus (Fabricius) 

 Abdominal segment 2 entirely reddish P. rufipennis (Macquart) 



5. Face with black 6 



Face yellow 7 



6. Abdomen with yellow at junction of segments 2 and 3 . P. hermanni (Krober) 

 Abdomen with yellow at distal margins of most segments. 



C. verus, new species 



7. Cheeks dark; complete post vertical pollinose stripe. 



P. parsonsi, new species 

 Cheeks yellow; no complete postvertical stripe 8 



8. Front entirely dark P. pallipcs (Eymelt) 



Front mostly yellowish 9 



9. Distal abdominal segments dark reddish P. cubanus Parsons 



Distal abdominal segments black P. bahamensis Parsons 



10. Wing without dark pattern; hyaline or yellowish brown anteriorly . . . .11 

 Wing with dark pattern or entirely dark 13 



11. Head with black spot at frontofacial junction . . . C. bermudensis Parsons 

 Head without such spot 12 



12. Antennal segment 3 much longer than segment 2 . M. atratulus (Malloch) 

 Antennal segment 3 much shorter than segment 2 . P. inornatus (Williston) 



13. Wing pattern interrupted in submarginal cell, but may be dark distally; not 



extending beyond third vein 14 



Wing pattern fiUing submarginal cell, but may gradually pale distally ... 16 



14. Front entirely black, or partly reddish 15 



Front yellow with dark T-pattern or midline .... P. abruptus (Krober) 



