Bryobiella desertorum Tuttle & Baker 1968 (Figs. 1–38)

Diagnosis. Within Bryobiella . Female: dorsal setae barbed; dorsal central setae (v 2, sc 1, c 1, d 1, e 1) 1/3 to 1/2 as long as distance between their bases. Prodorsal striae longitudinal centrally; hysterosomal striae transverse between c 1 to f 1, longitudinal behind f 1; empodium with one pair of tenent hairs; tarsus I with 8 to 10 tactile setae, two solenidia and three eupathidia; tarsus II with 8 to 9 tactile setae, one solenidion and three eupathidia.Anal setae forked. Male: dorsal setae similar to female. Prodorsal striae longitudinal centrally; hysterosomal striae entirely transverse centrally. Femur I, femur II, genua I, genua II and tibia II with extra solenidia. Anal setae smooth. Aedeagus very long, slender, tapering to tip.

Distribution. United States (Arizona).

Type specimens examined: One paratype male, ex. Euphorbia polycarpa, from Gila Bend, Arizona, USA, on April 9, 1963, coll. D.M. Tuttle.

Non-type specimens examined: One female, ex. E. albomarginata, from Dateland, Yuma, Arizona, on June 27, U.S.A., coll. D.M. Tuttle (OSAL, OSAL0052119). One protonymph, ex. E. albomarginata, from Gila Bend, Arizona, USA, on October 15, 1963, coll. D.M. Tuttle. One female, three deutonymphs, four protonymphs and 10 larvae, ex. E. albomarginata, from Gila Bend, Arizona, USA, on June 27, 1966, coll. D.M. Tuttle. One protonymph (molting), ex. E. albomarginata, from Gila Bend, Arizona, USA, on July 27, 1966, coll. D.M. Tuttle. Two larvae, ex. Bouteloua aristidoides, from Gila Bend, Arizona, USA, on September 13, 1969, coll. D.M. Tuttle. One female, ex. Atriplex elegans, Yuma, Arizona, USA, on August 18, 1979, coll. D.M. Tuttle. Two females, ex. A. elegans, Yuma, Arizona, USA, on August 19, 1979, coll. D.M. Tuttle. One female, ex. A. elegans, Yuma, Arizona, USA, on August 20, 1979, coll. D.M. Tuttle. One male, ex. A. elegans, Yuma, Arizona, USA, on September 3, 1979, coll. D.M. Tuttle.One male, ex. Tiquilia palmeri, from Yuma, Arizona, U.S. A, on May 14, 1964, coll. D.M. Tuttle. One deutonymph, ex. T. palmeri, from Yuma, Arizona, U.S. A, on September 18, 1964, coll. D.M. Tuttle.