112 Acarology 



Discussion: Coxequesomids are myrmecophiles. They are of no known 

 economic or medical importance. 



Reference: 



Sellnick, Max. 1926. Alguns novos Acaros (Uropodidae) myrmecophilos 

 e termitophilus. Arch. Mus. Rio de Janeiro 26:29-56, 27 figs. 



Planodiscidae Sellnick, 1926 



Figure 83 



Diagnosis: The tritosternum is 

 covered by coxae i. The grooves 

 for the legs are well developed. 

 The anal and genital openings are 

 in a single ventral plate. There is 

 a ventral marginal plate on either 

 side at the posterior end of the 

 body. The dorsal plate is not sur- 

 rounded by a dorsal marginal 

 plate. 



Figure 8^ Planodisciis sqimmatiim 

 Sellnick, 1926. Ventral view of female. 

 (After Sellnick 1926) 



Genus: 



Planodiscus Sellnick, 1926 



Type. Planodiscus squamatum Sellnick, 1926 



Discussion: Planodiscids are of no known economic or medical im- 

 portance. The only representative of the family was found associated 

 with ants. 



Reference: 



Sellnick, Max. 1926. Alguns novos Acaros (Uropodidae) myrmecophilos 

 e termitophilus. Arch. Mus. Rio de Janeiro 26:29-56, 27 figs. 



