60 MISC. PUBLICATION 305, U. 8. DEPT. OF AGRICULTURE 
Male.—Eye densely pilose, the areas of large and small facets rather well 
differentiated ; antenna scarcely smaller than in female; second palpal segment 
cream colored, with white hair, rather stout, with apex acute. Coloration of 
body essentially as in female, but coxae, bases of femora, and abdomen below 
grayish. 
Type.—Female, in the collection of C. B. Philip. Allotype male, 
United States National Museum No. 51962; paratypes in the Cana- 
dian National Collection, in the collections of the University of 
Nebraska and Kansas State College, and in the collection of C. B. 
Philip. 
Type locality —Gove County, Kans. 
DMstribution—South Dakota, Nebraska, Kansas, Oklahoma, and 
Iowa. June 12 (Yankton, 8. Dak.) to July 7 (Ness County, Kans.). 
In the United States National Museum, two females, two males. 
TABANUS INTENSIVUS Townsend 
(Fig. 18, A) 
Tabanus intensivus Townsend, Psyche 8: 93, 1897; Hine, Ohio Nat. 5: 238-239, 
1904. 
Tabanus gilanus Rowe and Knowlton (not Townsend), Canad. Ent. 67: 241, 
1935. 
Rather small; grayish, with three rows of large gray spots on abdomen ; 
femora black; hind tibial fringe predominantly white; first antennal segment 
not swollen above; third elongate, mostly black; eye pilose; no distinct ocellar 
tubercle; palpus stout. 
Female.—Length 12-15 mm. Eye with short, pale pile, purple, with two green 
bands. Frons gray, usually tinged with yellow or brown at level of median 
callus, about three times as high as width at base, slightly widened above; basal 
callus shiny brown to black, distinctly convex, subquadrate, nearly touching 
eyes; median callus about one-third width of frons, about height of basal callus 
and usually joined to it by a line; vertex usually with an irregular denuded 
spot, but no distinct tubercle; subcallus yellowish brown, with thin gray pollen. 
First antennal segment not enlarged, yellowish gray, with mostly black hair; 
second gray, with distinct dorsal process; third black, the basal half sometimes 
with considerable orange; dorsal angle of basal portion low, obtuse, the excision 
shallow; basal portion about two-thirds as wide as long, the annulate portion 
slightly shorter than basal portion. Clypeus and genae white, with white hair. 
Second palpal segment very stout basally, tapering to an acute apex, white 
haired, often with some scattered black hair, 
Mesonotum blackish, with gray stripes in usual pattern, erect black hair, 
and recumbent yellowish-white to golden hair; prescutal lobe yellowish brown, 
with black hair. Pleura, sternum, and coxae light gray, with white huir. 
Wing entirely hyaline, the veins orange brown; venation normal. Femora black, 
with gray pollen; tibiae yellowish brown, the apical half of fore tibia and 
extreme apices of others black; hind tibial fringe white, with a few scattered 
black hairs; tarsi biack. 
Abdomen black above, with three rows of pale-gray spots, the sublateral spots 
frequently tinged with reddish; median spots contiguous, narrowed anteriorly, 
widened posteriorly, occasionally joining sublateral spots posteriorly; sub- 
lateral spots oblique, extending length of each tergite; venter gray, with pale 
hair and, medianly, some black hair. 
Male.—Eye short pilose, the areas of large and smali facets rather distinctly 
differentiated ; second palpal segment moderately stout, with acute apex, Body 
coloration throughout as in female. 
Cotypes—Two females, collection unknown. 
Type locality—West Fork, Gila River, Ariz. 
Distribution—Washington and Montana to New Mexico. June 8 
(Logan, Utah) to August 14 (Las Vegas, N. Mex.). In the United 
States National Museum, 28 females, 1 male. 
