1965] Fairchild — Neotropical Tahanidae 2IJ 
Abdomen at most yellowish horn colored at sides of anterior seg- 
ments. Posterior spur of wing pattern fails to reach hind margin. 
3 - 
3. Frons markedly wider than high, much wider below than at 
vertex. Third antennal segment basally yellow, the plate much 
less than twice length of style. Posterior spur of dark wing 
fascia narrow, ending abruptly. Only first tergite velvety black, 
the rest shiny. al bit arsis Macq. 
Frons about as high as wide, slightly widened below. Third an- 
tennal segment black, the plate twice length of style. Posterior 
spur of wing fascia broad, fading out in fourth posterior cell 
before wing margin. Tergites 1 to 4 extensively velvety black 
dorsally. colombiana n. sp. 
References 
Barretto, M. P. 
1949. Estudios sobre Tabanidas Brasileiros X. Conoposelaga n. gen. 
An. Fac. Med. Univ. S. Paulo, 24: 87-93, PI. 1. 
Bequaert, J. 
1926. Tahanidae, in Med. Rep. Hamilton Rice 7th Exped. Amazon, 
etc. Contr. no. IV Harvard Inst. Trop. Biol. Med. Chap. XV, 
Insecta, pp. 214-235. Cambridge, Harvard Univ. Press. 
Enderlein, G. 
1925. Studien an blutsaugenden insekten 1. Grundlagen einer neuen 
Systems den Tabaniden. Mitt. Zool. Mus. Berlin, 11 (2): 255-409. 
Fairchild, G. B. 
1942. Notes on Tahanidae from Panama. IX. The genera Stenotabanus 
Lutz, Lepiselaga Macq. and related genera. Ann. Ent. Soc. Amer., 
35 (3) : 289-309, PI. 1. 
1961. The Adolfo Lutz collection of Tahanidae. 1. The described genera 
and species, condition of the collection, and selection of lectotypes. 
Mem. Inst. Osw. Cruz, 59(2): 185-249, 2 plates. 
Krober, O. 
1934. Catologo dos Tahanidae da America do sul e Central, incluindo 
o Mexico e as Antilhas. Rev. Ent., 4(2-3): 222-276, 291-333. 
Lutz, A. 
1913. Tabanidas do Brasil e alguns Estados visinhos. Mem. Inst. Osw- 
Cruz, 5(2) : 142-191, PI. 12-13. 
Mackerras, I. M. 
1955. The classification and distribution of the Tahanidae. II. History: 
Morphology: Classification: Subfamily Pangoniinae. Aust. J. 
Zool., 3 (3) : 439-511. 
Stone, A. 
1934. Notes on Bolbodimyia and Himantostylus, with a new species. 
Rev. Ent., 4(2) : 190-191. 
