Mesostigmata 



107 



Polyaspidae Berlese, 1917 



Figure 78 



Genera: 



3. 



Polyaspis Berlese, 1881 



Type. Polyaspis patavinus Berlese, 1881 



Calotrachytes Berlese, 1916 



Type. Trachynotus fimbriatus Michsie], 1908 



Dipolyaspis Berlese, 1916 



Type. Polyaspis {Dipolyaspis) sansonei Berlese, 1916 



Polyaspinidae Tragardh, 1941 



Figure 79 



Genus: 



Polyaspinus Berlese, 1916 



Type. Polyaspinus cylindricus Berlese, 1916 



Discussion: Little is known 

 about the life of this interesting 

 group of mites. Tragardh finds 

 them under the bark of decayed 

 stumps so that they are probably 

 found in concentrations of rot- 

 ting organic matter high in cel- 

 lulose. This group is of no known 

 medical or economic importance. 



Figure 79 Polyaspinus cylindricus 

 Berlese, 1916. Ventral view of female. 

 (After Tragardh 1941) 



Reference: 



Tragardh, I. 1941. Further contributions towards the comparative mor- 

 phology of the Mesostigmata III. On the Polyaspididae. Berl. Zool. 

 Bidrag. F. Uppsala 20:345-357. 



