Hydrachnellae 



317 



Eupatrellidae Viets, 1935 



Figures 249, 250 



Diagnosis: This family is based on a nymphal form and no diagnosis 

 is given here. 



Figure 249 Eiipatrella reticulata 

 Walter. Palpus of nymph. (After Wal- 

 ter 1935) 



Figure 250 Eupatrella reticulata Wal- 

 ter. Nymph. (After Walter 1935) 



Genus: 



Eupatrella Walter, 1935 

 Type. Eupatrella reticulata Walter, 

 incertus Koenike, 1893) 



1935 (probably = Hydryphantes 



Arrenuridae Thor, 1900 



Figure 251 



Diagnosis: The body is armored and usually 

 has a dorsal suture. On the palpus is a shear 

 formed by the tibia and tarsus. The coxal plates 

 are united with the ventral shield. The genital 

 organ is in the opening in the ventral shield. 

 Genital suckers are numerous, small and pore- 

 like, and more or less growing out of plates. 

 Often the male has an extension on the posterior 

 of the body. Also the genu of leg iv is sexually 

 differentiated. 



Figure 251 Arrenurus valencius Marshall. Dorsum of 

 male. (After Lundblad 1935) 



