80 MISC. PUBLICATION 305, U. S. DEPT. OF AGRICULTURE 
TABANUS BIRDIEI Whitney 
(Fig. 29, A) 
Tabanus birdiei Whitney, Canad. Ent. 46: 343-344, 1914; Bequaert, Boston Soe. 
Nat. Hist. Occas. Papers 8: 86, 1933. 
Medium sized; reddish brown, with three rows of pale spots on abdomen, 
confluent along posterior margins of tergites; wing spotted; frons broad; basal 
callus prominent, subquadrate. 
Female.—Length 14-17 mm. Eye bare, purple, with two green bands. Frons 
gray, two and one-half to three times as high as wide, with parallel sides; 
basal callus protuberant, shiny, reddish brown, subquadrate, rounded above; 
median callus a short, triangular, flat, rather dull reddish-brown extension 
from top of basal callus. Subeallus, clypeus, and genae light gray, with white 
FiguRE 29,—Antenna, front view of head, and-palpus of (A)Tabanus birdiei and (B) 
TZ. cymatophorus. 
hair below. Antenna reddish, darkened beyond dorsal angle of third segment; 
first and second segments with black hair; third with basal portion only 
slightly longer than broad, dorsal angle rectangular and excision pronounced ; 
annulate portion about as long as basal portion. Second palpal segment rather 
slender, light reddish brown, with a mixture of black and white hair. 
Mesonotum reddish brown, with gray lines in usual pattern and a mixture 
of white, yellowish, and black hair, the latter abundant on prescutal lobe. 
Pleura, sternum, and coxae gray tinged with reddish, with white hair. Wing 
hyaline, with pronounced brown spots at furcation and cross veins; cell Rs 
somewhat narrowed apically. Legs reddish brown, with mostly white hair, 
the apical half of fore tibia and apical fourths of other tibiae and all tarsi 
with black hair; hind tibial fringe distinct, the hairs toward base white, 
toward apex black. 
Abdomen above rather pale reddish brown, with broad, whitish, posterior 
margins which expand into distinct gray triangles medianly and less distinct 
ones sublaterally, none reaching anterior margin; venter nearly uniformly 
gray. 
Male.—Unknown. 
Cotypes.—Kight, all bearing same data and almost identical, Mu- 
seum of Comparative Zoology No. 17059. 
Type locality—West Palm Beach, Fla. 
Distribution —Gotha to West Palm Beach, Fla. March (Gotha) 
to April 30 (St. Petersburg). In the United States National Mu- 
seum, two females, 
TABANUS CYMATOPHORUS Osten Sacken 
(Fig. 29, B) 
Tabanus cymatophorus Osten Sacken, Mem. Boston Soc. Nat. Hist. 2 (pt. 4, 
No. 4) : 444, 1876; Hine, La. Agr. Expt. Sta. Bull. 98: 47-48, 1907; Schwardt, 
Ark. Agr. Expt. Sta. Bull. 332: 38, 1986; Philip, Bull. Brooklyn Ent. Soc. 
31: 190, 1936. . 
Rather large; gray and brownish, with three rows of white spots on abdomen, 
which are confluent along hind margins; furcation and cross veins of wing 
margined with brown; frons rather narrow; basal callus higher than wide. 
