288 

 Genus: 



Acarology 



Rutripalpus Sokolow, 1934 



Type. Rutripalpus limicola Sokolow, 1934 



Mamersopsidae Lundblad, 1930 



Figures 211,212 



Diagnosis: Dorsal and ventral shields appear on the body of these 

 mites and are separated from one another by a dorsal suture. The 

 dorsal shield may consist of one plate or of many united plates; gland 

 pore plates are located in the dorsal suture. The palpus is clublike, 



Figure 211 Mamersopsis thoracica Figure 212 Mamersopsis thoracica 

 Nordenskiold. Dorsum. (After Nor- Nordenskiold. Venter. (After Nor- 

 denskiold 1905) denskiold 1905) 



especially the palpfemur which is strongly thickened dorsally and pro- 

 vided with spine or spine and protuberance on the inner margin. 

 The palpal genu is shorter than the femur or tibia; the palpal tibia is 

 strongly shortened and shorter than the femur and possesses a hair- 

 bearing process on the inner margin; the palpal tarsus is spinelike 

 distally. Forming one group, the coxal plates are united with the ven- 

 tral plate and all plates are separated by weak sutures. The legs may 

 or may not have swimming hairs; tarsus iv is often reduced and carries 

 no claw or a simple one. The genital organ is more or less united or 

 close to coxae iv and has two movable plates and three pairs of gen- 

 ital suckers. 



Genera: 



1. Mamersopsis Nordenskiold, 1905 



Type. Mamersopsis thoracica Nordenskiold, 1905 



