110 



Acarology 



In order to make the above key more readily understandable 

 sketches of the arrangement of the dorsal plates in representative 

 genera are shown in Figure 80. 



Discourellidae 



(New name for Protouropodidae Tragardh, 1941) 



Figure 81 



Diagnosis: To the Discourellidae belong those genera that lack a 

 camerostome that is protected by the first pair of coxae but that have 

 an epigynial plate characteristic of the suborder Uropodina. The tri- 

 tosternum in this family is unusual in that it is broad at the base. 



Figure 81 Discourella modesta Leonardi, 1900. Left, ventral view of female 

 and Apionoseiiis lagenaeformis (Berlese), 1904; right, ventral view of female. 

 (After Tragardh 1941) 



Genera: 



3. 



Discourella Berlese, 1910 



Type. Discopoma venusta Berlese, 1884 



{—Discourella discopomoides Berlese, 1910) 

 Apionoseius Berlese, 1904 

 Type. Trachytes lagenaeformis Berlese, 1904 

 Polyaspidella Berlese, 1910 

 Type. Polyaspidella herenicea Berlese, 1910 



Discussion: Tragardh 1941 proposed the familial name Protouro- 

 podidae for the family. The name Discourellidae is here suggested for 



