232 



Acarology 



Radford, C. D. 1934. Notes on the genus Myohia. North Western Natural- 

 ist 356-364. 1935: 248-258, 1936 a:34-39. 1936 b: 144-151. 



. 1948. A revision of the fur mites Myobiidae (Acarina). Bull. Paris 



Mus. d'Hist. Nat. Ser. 2, 20(5) :458-464; (6) :525-531. 



Womersley, H. 1941. Notes on the Cheyletidae (Acarina, Trombidoidea) 

 of Australia and New Zealand with descriptions of new species. Rec. 

 South Austral. Mus. 7(l):51-64. 



Cheyletidae Leach, 1814 



Figure 173 



Diagnosis: The cheyletids are yel- 

 lowish or reddish, small to medium- 

 sized mites measuring from about 

 0.20 to 0.80 mm. in length. Their body 

 is oval, plump, and in the feather- 

 inhabiting mites, elongate. The propo- 

 dosoma and the hysterosoma are 

 usually plainly delineated and usually 

 they have one or more dorsal shields. 

 Lenslike eyes may be present or lack- 

 ing. The dorsal body setae are simple, 

 serrate, rodlike, or clavate. A strong 

 peritreme which more or less frames 

 the gnathosoma is present. The cheli- 

 cerae are short and stylet-like for 

 piercing while the palpi are large and 

 pincer-like for grasping. The palpal 

 thumb is short and may or may not 

 have a comb and sickle-like setae. A 

 large terminal claw, usually toothed, is located on the palpal tibia. 

 The tarsi of the legs have two claws and an empodium (tarsus i of 

 Cheletogenes has no claws or pulvillus; tarsus i of Cheletomorpha 

 lacks claws but has a pulvillus) . There are no genital suckers. The geni- 

 tal opening of the male is in some cases dorsal but usually posterior and 

 ventral. 



Figure 173 Cheletogenes ornatiis 

 (Canestrini and Fanzago). Dor- 

 sum of female. 



Genera: 



1. Cheyletus\.2iirQ\\\Q, \196 



Type. A cams eruditus Schrank, 1781 



