MITES OF FAMILY CHEYLETIDAE — BAKER 315 



This appears to be a cosmopolitan species. The specimens in the 

 United States National Museum collection were taken on wheat at 

 Chambersburg, Pa., November 14, 1930, by J. O. Chambers. 



ACAROPSIS CALLIDA Kuzin 



Acaropsis callida Kuzin, in Rodendorf, Wiss. Ber. Moskauer Staats Univ. Zool,, 

 vol. 42, pp. 79, 80, 1940. 



Type habitat. — In grain infested with mites. 



Type locality. — Rostov on Don, Union of Soviet Socialist Republics. 



Genus CHELETOSOMA Oudemans 



Cheletosoma Oudemans, Eut. Ber. Nederl. Ver., vol. 1, fasc. 21, p. 207, 1905 

 (1904). 



Type, Cheletosoma tyrannus Oudemans (monotypic). 



CHELETOSOMA TYRANNUS Oudemans 



Cheletosoma tyrannus Oudemans, Ent. Ber. Nederl. Ver., vol. 1, fasc. 21, p. 207. 

 1905 (1904) ; Mem. Soc. Zool. France, vol. 19, pp. 168-174, 1906. 



Type hahitat.— In shafts of wing feathers of Aramus guaraunu 

 {= A. scolopaceus) . 

 Type locality. — ^"Tropical America." 



CHELACAROPSIS, new genus 



Palpal tarsus possessing only one comblike seta and two sicklelike 

 setae; a pair of eyes present on propodosoma; dorsal body setae 

 broadly clavate-serrate ; no dorsal shields. 



Type, C helacaropsis moorei^ new species. 



This genus, erected to include a male and female cheyletid, is related 

 to the genus Acaropsis., but differs in having no indication of dorsal 

 shields and in having broadly clavate-serrate dorsal body setae. 



CHELACAROPSIS MOOREI, new species 



Plate 17, Figures 149-154 



Female. — Small mite with narrow body and rostrum. Palpi elon- 

 gate, femur ahnost twice as long as wide, the dorsal seta simple, ser- 

 rate ; other palpal setae simple ; palpal claw long, narrow, with 3 basal 

 teeth ; palpal tarsus with 2 sicklelike setae and only 1 comblike seta 

 which possesses 13 short teeth. Pattern on dorsum of rostrum com- 

 posed of longitudinal striations; peritreme simple, possessing seven 

 pairs of segments. No dorsal shields or indications of shields ; stria- 

 tions on anterior portion of propodosoma and hysterosoma longitu- 

 dinal striations on posterior portions transverse. A pair of lateral 



