114 MISC. PUBLICATION 305, U. 8S. DEPT. OF AGRICULTURE 
margined with brown; venation normal. Legs nearly uniformly reddish, with 
nearly white hair; hind tibial fringe entirely pale yellowish. 
Abdomen reddish brown, with a median row of distinct, pale triangles, about 
equal in size on tergites 24 and progressively smaller posteriorly; lateral pos- 
terior margins each with a narrow yellowish band; venter nearly uniformly red- 
dish, with pale pollen. 
Male.—Areas of large and smail facets of eye distinctly differentiated, the 
large facets covering about two-thirds of eye. Coloration as in female. 
Type.—Female, in the collection of Ohio State University. The 
allotype male is also in that collection. 
Type locality —Jackson County, Kans. 
Distribution—From Iowa south to Oklahoma and Alabama. May 
1 (Imboden, Ark.) to July 4 (St. Louis, Mo.). In the United States 
National Museum, 22 females, 8 males. 
TABANUS SULCIFRONS Macquart 
(Fig. 54, A) 
Tabanus variegatus Fabricius, Systema Antliatorum, p. 95, 1805; Wiedemann, 
Aussereuropaische zweifliigelige Insekten, vy. 1, pp. 120-121, 1828: Osten 
Sacken, Smithsn. Misc. Collect. No. 270, p. 228, 1878: Hine, Ohio State 
Acad. Sci. Spec. Papers 5: 56, 1903. (Preoccupied by Tabanus variegatus 
Degeer. ) ; 
Tabanus sulcifrons Macquart, Dipteres exotiques nouveaux ou peu connus, sup. 
5, p. 53, 1855; Osten Sacken, Smithsn. Mise. Collect. No. 270, p. 228, 
1878; Williston, Kans. Acad. Sci. Trans. 10: 138, 1887; Hine, Ohio State 
Acad. Sci. Spec. Papers 5: 54-55, 1903; U. S. Dept. Agr., Bur. Ent. Tech. 
Ser. 12: 22-28, 1906; La. Agr. Expt. Sta. Bull. 93: 56, 1907; McAtee and 
Walton, Ent. Soc. Wash. Proc. 20: 204-205, 1918; Davis, Ill. State Nat. 
Hist. Survey Bull. 18: 97-99, 1919; Schwardt, Ark. Agr. Expt. Sta. Bull. 
332: 51-54, 1936. 
Tabanus tectus Osten Sacken, Mem. Boston Soc. Nat. Hist. 2 (pt. 4, No. 4, 
and sup.) : 486-487, 558, 1876-78. 
Tabanus exul Osten Sacken, Mem. Boston Soc. Nat. Hist. 2 (sup.): 558, 1878: 
Williston, Kans. Acad. Sci. Trans. 10: 138, 1887: Townsend, Amer. Ent. Soc. 
Trans. 22: 60, 1895; Hine, La..Agr. Expt. Sta. Bull. 93: 48, 1907; Garman, 
Ky. Agr. Expt. Sta. Bull. 151, 1910. 
Rather large; orange brown, with a median row of white or yellowish 
triangles on abdomen; furcation and cross veins margined with brown; fore 
tibia bicolored; frons moderately wide; cell R; usually open. 
Female—Length 18-23 mm. Eye blue, with two diagonal green bands, the 
lower one turning sharply upward at outer margin and nearly touching upper 
one, which is constricted at outer third. Frons yellowish gray, about four 
times as high as width at base, slightly widened above; basal callus shiny 
chestnut brown, nearly twice as high as width below where it touches the 
eyes, and slightly narrowed above; median callus narrow, about length of 
basal callus and joined to it by a slender line; subcallus, clypeus, and genae 
light gray tinged with yellow, the hair below yellowish white. First two 
antennal segments dark orange brown, with black hair; basal portion of third 
orange, often darkened beyond dorsal angle, the annulate portion black; 
dorsal angle right or slightly acute, the dorsal excision deep: annulate portion 
slightly shorter than basal portion. Second palpal segment rather slender, 
tapering, orange brown. with short black hair. 
Mesonotum dark reddish brown, with yellowish-gray lines in usual pattern; 
prescutal lobe orange brown, with black hair; tufts of yellowish hair above and 
below wing base and on side of scutellum. Pleura, sternum, and coxae gray 
tinged with reddish and with pale-yellowish hair except for black hair on 
supraepimera. Wing subhyaline tinged with orange, or sometimes grayish 
discally, the costal cell orange and cross veins and furcation margined with 
brown; cell R; narrowed apically, but only very rarely closed at margin. Fore 
femur black; middle and hind femora dark brown, with yellowish-brown 
apices; fore tibia with basal half yellowish brown, with pale hair, apical half 
dark brown, with black hair; middle and hind tibiae orange brown, darker 
