Cooley & Kohls: Argasidae of N. America, etc. 113 



Ornithodoros kelleyi Cooley and Kohls, 1941 

 Plate 12. Figs. 51 and 52 



1941c. Ornithodoros %e/Zept Cooley and Kohls, original description, pp. 912-914, with 

 figures. 



Sexes similar; nymphs and adults similar. 



ADULT 5 



Body. — Oval, pointed anteriorly and rounded posteriorly; sides more 

 curved and with the excavations at legs I, II, and III less pronounced than in 

 talaje. Size of female, 7.35 x 4.0. 



Mammillae. — Large, close but not crowded, rounded on top and with the 

 radial ridges reaching nearly to the top. Equal in sizes in lateral and 

 median areas and larger at the posterior margin where they are elongated with 

 the longer axes transverse; small on the venter, and indefinite on the supra- 

 coxal folds. Hairs absent on both dorsal and ventral surfaces, even on the 

 hood. 



Discs. — Large, conspicuous, in depressed areas which occupy much of the 

 median area of the dorsum. On the venter, discs in lineal arrangement in the 

 preanal and transverse postanal grooves and in three depressions caudad of 

 the transverse postanal groove. 



Legs. — Small and moderate in length; surface micromammillated; hairs 

 small. Tarsus I with a mild subapical dorsal protuberance; absent on all 

 others; dorsal humps absent Tarsus I notably large (wide when viewed later- 

 ally). Length of female tarsus I, 0.66; metatarsus, 0.51. Length of tarsus IV, 

 0.9; metatarsus, 0.66. 



Coxae. — Coxae I and II well separated; all others contiguous. Surfaces 

 micromammillated and with excrescences. 



Hood. — Very small and short, placed close to the anterior point of the 

 body and separated from it only by a depressed line. Not tongue-shaped as in 

 talaje. 



Camerostome. — Negligible and obscured by the large cheeks. 



Cheeks. — Large, reniform, with the anterior portion free. 



Capitulum. — Basis capituli about as wide as long; surface with irregular, 

 transverse, deep wrinkles and numerous micromammillae; with a pair of in- 

 conspicuous fine hairs posterior to the posthypostomal hairs and with a few 

 fine, short hairs on each lateral margin behind. Palpal article 1 micromammil- 

 lated. Hairs on the palpi moderate in number and in length. 



5 Described from specimens from houses in New York, Minnesota, and Illinois. 

 The species was originally described from larvae and nymphs from bats in Utah and 

 Colorado. 



