Trombidiformes 189 



i-ii and iii-iv are in two widely separated groups; coxae of the legs 

 are fused with the body and the legs are sparsely haired. All tarsi 

 have two claws and a small clawlike pulvillus; tarsus i has two 

 short, rodlike, sensory setae. The paratydeids measure 0.366 mm. 

 in length. 



Genus: 



1. Paratydeus Baker, 1949 



Type. Paratydeus alexanderi Baker, 1949 



2. Neotydeus Baker, 1950 



Type. Neotydeus ardisannae Baker, 1950 



3. Scolotydaeus Berlese, 1910 



Type. Scolotydaeus bacillus Berlese, 1910 



Discussion: These mites, which apparently are soil livers, appear to 

 be predators. Only three species are known. 



References: 



Baker, E. W. 1949. Paratydeidae, a new family of mites (Acarina). Proc. 



Ent. Soc. Wash. 51 (3) : 119-122. 

 . 1950. Further notes on the family Paratydeidae (Acarina) with 



a description of another new genus and species. J. Wash. Acad. 



Sci. 40(9):289-291. 



Speleognathidae Womersley, 1936 



Figure 129 



Diagnosis: The speleognathids are small, light yellowish-brown mites 

 measuring about 0.80 mm. in length. The skin is soft and has no 

 shields. A few short setae are present on the body while a pair of long 

 sensory setae is to be found on the propodosoma. Short and simple 

 palpi which lack the claw-thumb complex are present. The chelicerae 

 are reduced and the movable chela is a tiny, sharp point. Lenslike eyes 

 may or may not be situated on the propodosoma. There is no suture 

 between the propodosoma and the hysterosoma. The legs are short, 

 with netlike sclerotization and the coxae are divided into two groups. 

 All tarsi have claws and a haired pulvillus. No genital suckers are 

 present. 



Genus: 



Speleognathus Womersley, 1936 



Type. Speleognathus australis Womersley, 1936 



