284 Acarology 



11. Plesiothyas y\Q\%, \9?>5 



Type. Trichothyas multipora Walter, 1935 



12. Thyasella ViQis, 1926 



Type. Thy as mandihiilaris Lundblad, 1924 



13. 7/7yop^/^ Piersig, 1898 



Type. Thy as cancellata Protz, 1896 



14. Trichothyas Viets, 1926 



Type. Thy as pennata Viets, 1913 



15. F/e?5/a Lundblad, 1926 



Type. Thy as sciitata Protz, 1923 



Euthyasinae Viets, 1951 

 Genera: 



1. Euthyas Piersig, 1898 {— Bradybates Neuman, 1874 nom. praeocc.) 

 Type. Bradybates truncatus Neuman, 1874 



2. Panisopsis Viets, 1926 



Type. Thyas vigilans Piersig, 1896 



3. Thy asides Lundblad, 1926 

 Type. Thyas dentata Thor, 1897 



4. Zschokkea Koenike, 1892 



Type. Zschokkea oblonga Koenike, 1892 



Teratothyasinae Viets, 1929 



Genus: 



Teratothyas y lets, 1929 



Type. Teratothyas reticulata Wieis, 1929 



Tartarothyasinae Viets, 1954 

 Genus: 



Tartarothyas Wiets, \934 



Type. Tartarothyas micrommata Viets, 1934 



Clathrosperchonidae Lundblad, 1936 



Figures 205, 206 



Diagnosis: The body of these mites has a strong skin, which is cov- 

 ered with tiny spines and a radiating network pattern on the dorsal 

 and ventral surface. Projecting only weakly above the skin surface the 

 skin glands are strongly sclerotized and crater-like. The rostrum is 

 either long and narrow, elongate and tubelike on the anterior end 

 (Clathrosperchon) , or not tubelike and relatively short (Clathrosper- 



