124 Ac urology 



median plate. The metasternal plates are no longer attached to the 

 sternal plates i-iii but are separate and in some cases drastically reduced 

 in size. The metasternal plates vary considerably within the group 

 from the Celaenopsidae where they are large, uncovered, free, and 

 possess both the typical seta and pore, to the condition found in Lo- 

 bogynoides and other genera where they are small, covered, and lack 

 the seta but possess two pores, and to the condition found in Lobo- 

 gyniiim and other genera where they are fused with the sternal plate. 



Key to the Celaenopsina 



1. Metasternal plates partially or completely covered by lateral plates 2 

 Metasternal plates not covered Celaenopsidae 



2. Anterior lateral lobes of ventral plate, lateral plates, not separated 

 from ventral plate 3 



Lateral plates separated by suture from ventral plate; epigynial 

 plate reduced and visible only at posterior junction of lateral 

 plates Diplogyniidae 



3. Anal plate separate from ventral plate Euzerconidae 

 Anal plate fused with ventral plate Schizogyniidae 



Diplogyniidae Tragardh, 1941 



Figure 93 



Diagnosis: Diplogyniids can be recognized by the presence of a pair 

 of lateral plates that are triangular and hinged to the ventral plate 

 laterally. These lateral plates meet in the midline anteriorly and are 

 separated posteriorly by a small remnant of the epigynial plate. The 

 metasternal plates are reduced and partially covered by the anterior 

 margins of the lateral plates. Posterior to the lateral plates the ventral 

 plate extends to the posterior end of the body and includes the anal 

 plate. Lateral to the ventral plate there is a pair of metapodal plates 

 that reach the posterior end. The male genital aperture is in front of 

 the sternal plate and is flanked by a pair of presternal setae. Tragardh 

 1950 has described fourteen new genera and split the family into five 

 subfamilies. Four of the subfamilies are monotypic while the Diplo- 

 gyniinae contains all of the other genera. A key to the subfamilies 

 taken from Tragardh 1950 follows. 



