168 



Acarology 



Swan, D. C. 1934. The hay itch mite, Pediciiloides ventricosiis (Newp.) 

 (Acarina, Pediculoididae) in South Australia. J. Agr. South Austral. 

 37:1289-1299. 



Webster, F. M. 1910. A predaceous and supposedly beneficial mite, Pe- 

 diciiloides, becomes obnoxious to man. Ann. Ent. Soc. Amer. 3(1): 

 15-39, Pis. III-V. 



Tarsonemidae Kramer, 1877 



Figures 113-115 



Diagnosis: The tarsonemids have a segmented body and an anterior 

 dorsal shield which lacks a rooflike projection. Leg iv of female differs 

 from legs ii and iii in that it ends in an apical and subapical whiplike 



Figure 113 Tarsonemus setifer Ewing. 

 Dorsum of male. 



Figure 114 Tarsonemus setifer Ewing. 

 Dorsum of female. 



setae. Tarsonemella and Tarsonemus typhae Oudemans 1929 lack the 

 clavate organ between coxae i and ii while others have such an organ. 

 The chelicerae are stylet-like and the palpi simple. Heteromorphic 

 males are present in this family. The group of genera now included 

 under the tarsonemids is heterogeneous and probably needs further 

 revision. 



