310 Acarology 



The female genital opening is on the rear, far from the coxal plates; 



on each side is a genital plate with a longitudinal row of four genital 



suckers. The male genital opening 

 lies between the two coxal plate 

 groups. These mites have also 

 been reported on the gills of Amia 

 (Pisces; Bowfin). 



Figure 241 Astacocroton moUe Has- 

 well. Venter of female. (After Haswell 

 1922) 



Genus: 



Astacocroton Haswell, 1922 



Type. Astacocroton molle Haswell, 1922 



Axonopsidae Viets, 1929 



Figures 242, 243 



Diagnosis: The body is armored, porose, and has a dorsal suture. 

 The coxal plates are united in one group; coxal plates i are united 

 medianly with one another. The palpal tibia may or may not have inner 



Figure 242 Axonopsella spinigera 

 Lundblad. Dorsum of female. (After 

 Lundblad 1930) 



Figure 243 Axonopsella spinigera 

 Lundblad. Venter of female. (After 

 Lundblad 1930) 



