HORSEFLIES OF THE SUBFAMILY TABANINAE 129 
Tabanus punctipennis Macquart, Dipteres exotiques noveaux ou peu connus, 
sup. 2, p. 89, 1847. (Preoccupied by Tabanus punctipennis Macquart 1839.) 
Tabanus notabilis Walker, List of the Specimens of Dipterous Insects in the 
Collection of the British Museum, pt. 1, pp. 166-167, 1848. 
Tylostypia lasiophthalmus Enderlein, Mitt. Zool. Mus. Berlin 11: 363, 1925, 
Rather small; abdomen with orange laterally; infuscation at fureation and 
cross veins; subcallus denuded. 
Female.—ULength 12-15 mm. Eye densely pilose, deep purple, with four nar- 
row, pale-blue-green bands. Frons yellowish gray, with black hair, about 
three and one-half times as high as width across basal callus, distinctly widened 
above; a well-defined, reddish, ocellar tubercle; basal callus shiny orange brown 
to black, nearly square, slightly narrowed above; median callus short, black, 
separated from basal callus; subcallus denuded except around margins, shiny 
and concolorous with basal callus. First two antennal segments yellowish 
brown, with black hair; third orange, the annulate portion black; basal por- 
tion with a distinct, obtuse, dorsal angle and moderate dorsal excision, the 
annulate portion slightly shorter than basal portion. Clypeus and genae white, 
the latter tinged with yellow above, with creamy hair. Second palpal segment 
creamy, with black hair, somewhat swollen basally and tapering to a rather 
sharp apex. 
FIGuRE 61. —Antenna, front FAOR pos head, and palpus of (A) TJabanus lasiophthalmus 
d (B) T. californicus. 
Mesonotum black, with lines of yellowish-gray pollen and hair in usual pat- 
tern; prescutal lobe reddish. Pleura, sternum, and coxae reddish and gray, 
with a mixture of gray and black hair. Wing nearly hyaline, the costal cell 
tinged with brown and fureation and all cross veins distinctly margined with 
brown; venation normal. Femora gray basally, orange brown apically; tibiae 
orange brown, the anterior tibia slightly darker apically; hind tibial fringe 
yellowish on basal half, black apically; tarsi darker, orange brown. 
Abdomen above orange brown, with a black median stripe as wide as scutel- 
lum on first tergite, narrow on tergites 2-4 and widening beyond fourth; on 
tergites 2—5 distinct, yellowish-brown, sublateral, oblique spots, paler than the 
orange-brown ground color; venter nearly uniformly yellowish brown. 
Male.—Hye facets nearly uniform in size. Frontal triangle gray. Coloration 
otherwise as in female, the venter with some black medianly and apically. 
Type.—Female, collection unknown. 
Type locality. — Carolina. 
Distribution—Alberta to Quebec and south to Colorado, Louisi- 
ana, and South Carolina. March 18 (New Orleans, La.) to August 
25 (Baddeck, Cape Breton Island, Nova Scotia). In the United 
States National Museum, 117 females, 45 males, 
TABANUS CALIFORNICUS Marten 
(Fig. 61, B) 
Tabanus californicus Marten, Canad. Ent. 14: 210, 1882; Hine, Ohio Nat. 5: 236, 
1904; McDunnough, Canad. Ent. 58: 141, 1921. 
Tabanus affinis Howard (not Kirby), The Insect Book, pl. 16, fig. 14, 1901. 
Medium-sized ; brownish, with sides of abdomen above and hind tibial fringe 
orange; prescutal lobe yellowish; frons narrow; third antennal segment with 
prominent dorsal angle. 
38521°—38——9 
