1965] 
Fairchild — Neotropical T abanidae 
215 
glass clear with yellow veins and stigma FI im ant 0 stylus 
Basicosta at least sparsely setose. Large species generally over 
12 mm. Basal plate of antennae broad, or with a strong dorsal 
angle. No ocelli. Wing more extensively black, the discal cell 
at least half black. 4. 
4. All tibiae greatly inflated. Palpi greatly inflated and shiny. Sub- 
callus, face and cheeks largely shiny. Basal black of wing extend- 
ing to middle of discal cell, with a small clear spot in first and 
second basal cells near apex. Antennal plate broad and flattened, 
much longer than style, obtusely angulate above. Selasojna 
Fore tibiae slightly inflated, others normal. Palpi slender, polli- 
nose. Subcallus, face and cheeks brown pollinose. Basal black 
of wing extending beyond end of discal cell, the latter with a 
small transverse oval hyaline fenestra beyond middle. Antennal 
plate with a strong acute dorsal angle, almost a spine, the plate 
but slightly longer than style. Stigmatophthalmus. 
Lepiselaga Macquart 
1838, Dipt. Exot., 1(1): 153. Krober, 1934, Rev. Ent. 4(2): 252. Fairchild 
1942, Ann. Ent. Soc. Amer., 3 5 (3): 290. Type Tabanus lepidotus Wied. 
{— eras sipes Fab.) 
Hadrus Perty, 1833, Del. Anim. Artie., Brasil, p. 183 (nec Dejean 1833 
Coleoptera) . 
Lcpidoselaga Osten Sacken, 1876, Mem. Boston Soc. Nat. Hist., 2: 435. 
Conoposelaga Barretto, 1949, An. Fac. Med. Univ. S. Paulo, 24: 87-88. Type 
Lepiselaga aberrans Lutz. 
The most recent definition of the genus is by Fairchild (1942). 
To this may be added the condition of the discal cell, which is nar- 
rowed in the middle by the strong anterior bending of vein M 3 where 
it forms the posterior border of the discal cell. 
L. aberrans Lutz, (Fig. 3) for which Barretto erected the genus 
Conoposelaga, differs from L. crassipes (Fig. 5) most notably in the 
inflated notopleural lobes, inflated scutellum, broad frons with shiny 
vertex, and longer first antennal segment. These characters are to 
a considerable extent shared by L. albitarsis Macq. (Fig. 2) and the 
new species described below, so that there is justification for Barretto’s 
action. I prefer, however, in view of the obviously close relationship 
of the four species, to retain Conoposelaga in a subgeneric sense. 
Lepiselaga (Conoposelaga) colombiana n. sp. 
Fig. 4 
A small black species resembling L. albitarsis but with narrower 
frons, longer third antennal segment, and abdomen black tomentose 
dorsally. 
