89 MISC. PUBLICATION 305, U. S. DEPT. OF AGRICULTURE 
stout at base, not long, but tapering to a narrow apex, creamy white, with 
concolorous and black hair. 
Mesonotum blackish, with narrow gray stripes in usual pattern and orange- 
brown prescutal lobe. Pleura, sternum, and coxae gray, with white hair. 
Wing hyaline, the stigma, a spot at furcation, and margin of basal portion 
of vein M2 brown; venation normal. Femora grayish, with mostly pale hair; 
fore tibia with basal half pale yellowish, with concolorous hair, the apex dark 
brown, with black hair; middle and hind tibiae orange brown, somewhat paler 
basally ; tarsi orange brown, the fore tarsus darkest. 
Abdomen above blackish, with a median row of gray triangles, narrowly 
contiguous, and oblique sublateral spots touching hind margins of tergites and 
often tinged with brown; venter gray tinged with reddish. 
Male.—Areas of large and small facets of eye sharply differentiated, the 
former yellowish, with a dark-brown transverse band; second palpal segment 
stout, rounded apically, with heavy white hair. Prescutal lobe nearly black. 
Rest of coloration essentially as in female. 
Figure 30.—Antenna, front view of head, and palpus of (4A) Tabanus monoensis and 
(B) T. reinwardtit. 
Type—A female, United States National Museum No. 24950. AI- 
lotype and paratype, United States National Museum No. 24950. 
Type locality —Topaz, Mono County, Calif. 
Distribution —California from Los Angeles County to Mono 
County. June 31 to August 3 (Topaz, Calif.). In the United States 
National Museum, five females, one male. 
TABANUS REINWARDTi!I Wiedemann 
(Fig. 30, B) 
Tabanus reihwardtii Wiedemann, Aussereuropaische zweifliigelige Insekten, 
v. 1, pp. 130-131, 1828; Osten Sacken, Mem. Boston Soc. Nat. Hist. 2 (pt. 4, 
No. 4) : 461-462, 1876; Hine, Ohio State Acad. Sci. Spec. Papers 5: 54, 1908; 
Jones and Bradley, Jour. Econ. Ent. 16: 310, 1928; Cameron, Bull. Ent. 
Research 17: 35-36, 1926; Stone, Ann. Ent. Soc. Amer. 23: 299-801, 1930; 
Philip, Minn. Agr. Expt. Sta. Tech. Bull. 80: 32, 114, 1981; Schwardt, Ark. 
Agr. Expt. Sta. Bull. 332: 48, 1936. 
Tabanus erythrotelus Walker, Insecta Saundersiana, Diptera, v. 1, p. 25, pl. 2, 
fig. 1, 1850. 
Medium sized; blackish, with three rows of gray spots on abdomen; furca- 
tion and cross veins margined with brown; frons rather broad, with a large, 
shiny, basal callus; vertex without a large denuded area. 
Female.—Length 15-19 mm. Eye bare or with very sparse, short pile, purple, 
with two bluish-green diagonal bands. Frous about two and one-half times 
as high as width at base, parallel sided or slightly narrowed above, tinged with 
yellow and with a large reddish-brown to black spot at level of median callus; 
basal callus reddish brown to black, subquadrate. and not quite touching eyes; 
median callus slender, lanceolate, narrowly joined to basal callus; a small, 
denuded, wrinkled spot at lower margin of vertex, not raised to form a tubercle ; 
subeallus yellowish gray. Antenna black, the first two segments and extreme 
base of third sometimes reddish brown; dorsal angle of third moderate and 
dorsal excision shallow; annulate portion usually slightly shorter than basal 
portion. Upper genae tinged with yellow, the lower genae and clypeus pale 
gray, with white hair. Second palpal segment moderately heavy, not elongate, 
usually tinged with reddish and with a mixture of short black and white hair. 
