HORSEFLIES OF THE SUBFAMILY TABANINAE 35 
veins; venation normal, or vein Rs with a short stump. Legs dusky orange 
brown, the tarsi somewhat darker ; hind tibial fringe of fine black hair. 
Abdomen above dark brown, with black hair, the hind margins of tergites, 
a median row of narrow triangles, rather large sublateral spots joined to 
hind margins, and extreme lateral margins gray tinged with yellowish, and 
with white hair; venter gray, with white hair. 
Male.—Unknown. 
Type.—Female, in collection of Ohio State University. 
Type locality—F¥ort Meade, Fla. 
Distribution —Florida. January 19 (Lake Worth) to April 18 
(Inverness), In the United States National Museum, seven females, 
STENOTABANUS PRODUCTUS (Hine), new combination 
(Fig. 138, A) 
Tabanus productus Hine, Ohio Nat. 5: 242, 1904; Rowe and Knowlton, Canad. 
Ent. 67: 2438, 1935. 
Small; grayish, with a faint, median, lighter-gray stripe on abdomen; head 
broad, with frons considerably widened above; vein Rs with long stump reaching 
toward Reis. 
ta, ON 
Figure 13.—Antenna, front view of head, and palpus of (A) Stenotabanus productus 
and (B) S. cribellum. 
Female.—Length 10-13 mm. Eye bare or very sparsely pilose, the head rather 
broad; inner, lower angle of eye unusually acute. Frons gray, three and one- 
half to four times as high as width across basal callus, distinctly widened above; 
basal callus shiny black, square or slightly broader than high; median callus 
large, transverse, irregular, touching eyes, rarely narrowly joined to basal 
callus; vertex usually with a small to rather large shiny-brown to black spot 
but no tubercle; subcallus gray, faintly tinged with yellow. Antenna black, the 
third segment sometimes tinged with brown, slender, with a slight dorsal angle 
and seareely any dorsal excision; annulate portion shorter than basal portion. 
Clypeus and genae white, with white hair. Second palpal segment cream 
eolored, with a mixture of short white and black hairs, stout, tapering to a 
rather blunt apex. 
Mesonotum black, with distinct lines of gray pollen in usual pattern; prescutal 
lobe reddish. Pleura, sternum, and coxae gray, with mostly white hair. Wing 
hyaline; base of vein Rs with a long stump reaching toward R»s, its direction 
being parallel with vein R;; cell R; distinctly narrowed apically. Legs black, 
the fore and middle tibiae white basally; fore tibia somewhat swollen; hind 
tibial fringe sparse, black and white. 
Abdomen blackish above, with a uniform, median, gray stripe from base to 
apex and a sublateral row of rather indistinct spots, the spot on second tergite 
large and rather distinct; venter uniformly gray. 
Male.—Hye with short, sparse pile, the areas of large and small facets sharply 
differentiated and the latter extending around margin of eye to vertex; second 
palpal segment stout, with acute apex. Coloration essentially as in female. 
Cotypes—Of both sexes, in the collection of Ohio State University. 
A female in the United States National Museum is probably from the 
cotype series. 
Type locality —Near Lander, Wyo., 5,000—7,000 feet. 
Distribution—F rom Oregon and California east to Wyoming and 
New Mexico. May 28 (Blue Creek, Utah) to September 11 (Timpie, 
Utah). In the United States National Museum, 22 females, 2 males. 
