Oribatei 437 



(with the visor forward) closes the opening hke a Hd on a kettle. The 

 ends of the feet (tarsus and claws) fit into the anterior end of this lid, 

 i.e., under the visor." 



Key to the Phthiracaridae 



1. Genital and anal plates short and broad; ventral hysterosomal 

 plate broadly surrounding anal opening to rear Phthiracarinae 



Genital and anal plates long and narrow; ventral hysterosomal 

 plate narrowly surrounding anal opening to rear Euphthiracarinae 



Phthiracarinae Perty, 1841 



Genera and subgenera: 



1. Phthiracanis Perty, 1841 



a. Phthiracarus s. str. 



Type. Acarus piger Scolpoli, 1763 (= Phthiracarus contractilis 

 Perty, 1841) 



b. Tropacariis Ewing, 1917 (= Calhoplophora Berlese, 1923) 

 Type. Hoplophora carinata Koch, 1841 



c. Trachy hoplophora Berlese, 1923 

 Type. Hoplophora magna Nicolet, 1855 



d. Hoplophorella Berlese, 1923 



Type. Hoplophora ciicullatum Ewing, 1909 



2. Steganacarus Ewing, 1917 



Type. Hoplophora anomala Berlese, 1883 



3. Hoplophthiracariis JsLCOt, \933 



Type. Hoploderma histricinum Berlese, 1908 



4. Atropacarus ^Wmg, \9\1 



Type. Hoplophora stricula Koch, 1836 



5. Ginglymacarus Ewing, 1917 



Type. Hoplophora dasypiis Duges, 1834 



6. Hoploderma Michael, 1898 (= Hoplophora Koch, 1836, nom. prae- 



occ.) 

 Type. Hoplophora laevigata Koch, 1844 



Euphthiracarinae Jacot, 1930 



Genera and subgenera: 



1. Oribotritia Jacot, 1924 (= Tritia Berlese, 1883, nom. praeocc.) 

 Type. Hoplophora decumana Koch, 1836 



2. Indotritia Jacot, 1928 



Type. Tritia krakatauensis Sellnick, 1924 



