Raoiellana allium Baker & Tuttle 1972

Raoiellana allium

This species, the only one in the genus, is distinctive in having padlike claws and empodia, no rostral shield, and in having long, whiplike setae.

FEMALE.—Rostrum short and rounded, reaching to distal end of femur I; palpus with two segments, the distal segment with three terminal setae and the basal segment with a single dorsal seta; rostrum without ventral setae. Leg setae slender and slightly serrate. With only three pairs of legs, leg IV not present; tarsal claws and empodia padlike and with double rows of tenent hairs; tarsi I and II each with a single distal outer solenidion. Rostral shield not present; eyes not present; propodosomal setae long, slender, serrate, and subequal in length. Dorsocentral setae of hysterosoma not more than half as long as sublateral and lateral setae. Striation pattern transverse on both propodosoma and hysterosoma. With two pairs of anal and two pairs of genital plate setae and a single pair of setae anterior to genital plate; a pair of setae between coxae III (no setae on coxae III); a pair of setae on coxa I and a single setae on coxa II; a pair of setae between coxae I. Length of body, including rostrum, 530μ.

MALE.—Rostral, dorsal setae pattern, and setae pattern of legs similar to those of female. With four pairs of legs. Femora I and II each with a strong ventral spine, that on II stronger. Striation pattern similar to that of female except hysterosoma divided by a transverse pattern; ventral striae as figured. A pair of setae on coxa I and a single seta on II, III, and IV each; a pair of setae between coxae I and between coxae III. Length of body, including rostrum, 428μ.

HOLOTYPE.—Female, USNM 3437, ex Allium pulchellum Don, on bulbs, Turkey at New York Quarantine, 18 August 1964, by C. S. Tuthill and J. Fons.

PARATYPES.—Males and females with the above data.

Dolichotetranychus Sayed, 1938:606.—Baker and Pritchard 1956:357.—Pritchard and Baker 1958:25.—Baker and Tuttle 1964:73.

TYPE-SPECIES.—Stigmaeus floridanus Banks, by monotypy and subsequent designation.

Dolichotetranychus ancistrus Baker and Pritchard

Dolichotetranychus ancistrus Baker and Pritchard, 1956:365.

A collection of this species was made on Bouteloua gracilis (Humboldt, Bonpland, and Kunth) Lagasca, at Pinedale, Arizona, 20 July 1966.

Dolichotetranychus apaches Baker and Pritchard

Dolichotetranychus apaches Pritchard and Baker, 1956:379.

This species has been collected in Arizona as follows: Sorghum halepense (Linnaeus) Persoon, Marana, 27 October 1967; Distichlis stricta (Torrey) Rydberg, Yuma, 3 November 1960; Cynodon dactylon (Linnaeus) Persoon, Casa Grande, 16 September 1967; Aristida adscensionis Linnaeus, Portal, 23 August 1968, Dateland, 19 May 1964, and Theba, 20 May 1965. It was also collected on Hilaria jamesii (Torrey) Bentham, Pueblo, Colorado, 6 September 1963.