3) MISC. PUBLICATION 305, U. S. DEPT. OF AGRICULTURE 
one-half times as high as width at base, somewhat widened above; vertex 
with a distinct ocellar tubercle surrounded by a shiny-brown area; basal callus 
slightly higher than wide, dark orange brown; median callus slender, elongate; 
subeallus yellowish gray. Antenna with first two segments yellowish brown, 
with black hair; basal portion of third orange, with a distinct, but obtuse, 
dorsal angle and no excision; annulate portion black, about as long as basal 
portion. Clypeus and genae pale gray, with white hair. Second palpal seg- 
ment pale yellow, with black hair, moderately stout at base, tapering to a 
blunt apex. 
Thorax above brownish, with faint gray stripes and a mixture of orange, 
black, and white hair; prescutal lobe orange brown, with black hair. Pleura, 
sternum, and coxae pale gray, with white hair. Wing hyaline, rather notice- 
ably elongate; a stump from vein Rs running parallel to vein Ras. Legs 
orange brown, the tarsi darker and fore tibia with basal half white haired, 
apical half black haired; hind tibial fringe sparse, white. 
os 
Figure 11.—Antenna, front view of head, and palpus of (4) Stenotabanus flavidus and 
(B) S. daedalus. 
Abdomen above orange brown, darker apically, a median row of pale-yel- 
lowish-brown triangles arising from narrow posterior bands of same color 
which widen laterally; dark portions with dark, light portions with light, hair; 
venter orange brown, with white hair. 
Male.—Unknown. 
Cotypes.—In the collection of Ohio State University. Two speci- 
mens in the United States National Museum are probably of the 
cotype series. 
Cotype localities —Arizona and Sierra Madre, Chihuahua, Mexico. 
Distribution —Arizona to Chihuahua. July 8 (Huachuca Moun- 
tains, Ariz.) to July 14 (Sierra Madre, Chihuahua). In the United 
States National Museum, three females. 
STENOTABANUS DAEDALUS, new species 
(Fig. 11, B) 
Small; dull yellowish brown; third antennal segment with stout basal portion 
and no dorsal excision, annulate portion with only three indistinct annuli; 
basal callus small and not touching eyes; frons rather narrow. 
Female—Length 9 mm. Eye sparsely pilose, green, with three purple bands. 
Frons four and three-fourths times as high as wide at base, slightly widened 
above, yellowish brown; basal callus yellowish brown, shiny, rounded, nar- 
rowly separated from subcallus and eyes; median callus a blackish spot reach- 
ing about halfway to vertex and narrowly joined to basal callus; subcallus pale 
vellowish brown. Antenna light yellowish brown, the annuli slightly darker; 
first two segments with black hair; basal portion of third with a blunt dorsal 
angle and no excision, about two-thirds as wide as long; annulate portion 
indistinctly three-segmented, about as long as width of basal portion; a few 
black hairs near dorsal angle and on annulate portion. Clypeus and genae 
white, with white hair. Palpus white, the second segment moderately stout at 
pase, tapering to rather pointed apex; hair of first segment white, of second 
mixed black and white. Proboscis slightly longer than palpus. 
Mesonotum blackish, with yellowish-brown lines in the usual pattern; 
prescutal lobe yellowish brown. Pleura, sternum, and coxae gray, with white 
hair. Wing hyaline, the costal cell tinged with yellow; venation normal. 
Abdomen brown above, with an indication of three rows of yellowish-gray 
spots; venter uniformly yellowish gray. 
Male.—Unknown. 
