136 



The whole central part of the left complex is invaginated anteriad to form a large pouch 

 (Ive in fig. 242-246; the edges along the bottom of this Ive-pouch are labelled 7 in fig. 242). 

 This invagination contains the Ive-apodeme (middle part; with the L2D'-sclerotisation), 

 the via-process (left side), and the terminal part of the ejaculatory duct D (right side). The 

 Ive-apodeme is completely sclerotised by L2D' - except for a membranous stripe (44 in 

 fig. 239a, 243, 245) in its ventral wall. At the base of the Ive-apodeme the Ive-pouch 

 broadens. Here, L2D' has a short extension to the left (36 in fig. 239a, 243-246) and a 

 long ventral extension to the posterior (28 in fig. 245, 246, which lies in the ventral wall 

 of the Ive-pouch). The main part of L2D', however, extends far posteriad within the dorsal 

 wall of the Ive-pouch (fig. 242); it bears a small apodeme (37 in fig. 242, 245), and its 

 posteriormost part sclerotises the psa-process. Along its right margin this main part of 

 L2D' folds ventrad and back to the left (towards edge 38 in fig. 245; compare fig. 244) to 

 form a shallow sclerite groove. Along edge 38 the cuticle turns to the right again and 

 continues into the dorsal wall of the ejaculatory duct (D in fig. 244, 245). The ejaculatory 

 duct opens from the right side into the Ive-pouch (fig. 242-246). The phallomere-gland (P 

 in fig. 242) opens posterior to the dorsal wall of the ejaculatory duct. 

 The via-process evaginates posteriad from the left wall of the Ive-pouch (fig. 244; in fig. 241 

 via is isolated and shown in ventral view). Distally via branches into three spines paa, 

 pda, and vsa. via has a basal and a distal sclerite separated by a membranous ring (39 in 

 fig.241, 244, 245; sclerites not termed separately). The basal sclerite is roughly cylindrical 

 (fig.244), with a deep recess at its ventral anterior margin (fig.241, 245). Ventrally it bears 

 the vsa-spine. At its right anterior margin it articulates with extension 36 of sclerite L2D' 



> p.l37 



Figs. 236-238: Nahublattella sp. (Blattaria, Blattellidae, Plectopterinae) - All figures except 236b show 

 mirror-images of the original preparations. - 236a: Male postabdomen in dorsal view; with phallomere 

 complex, subgenital plate, and lateral parts of abdominal tergite 9. - 236b: Same as in fig. 236a but 

 smaller scale and natural orientation. - 237: Subgenital plate in dorsal view; with insertion areas of 

 muscles (including p6). - 238: Dorsal sclerotisation S9d of subgenital plate; the part of the cuticle 

 shown has been cut off from the subgenital plate along the line between the points labelled x (compare 

 x in fig.237). - Scale: 1mm. 



>p.l38 



Figs.239-241 : Nahublattella sp. (Blattaria, Blattellidae, Plectopterinae) - All figures except 239b show 

 mirror-images of the original preparations. - 239a: Phallomere complex in ventral view. - 239b: 

 Same as in fig.239a but smaller scale and natural orientation. - 240: Phallomere complex in ventral 

 view; with some muscles; ventral wall of genital pouch completely retained (compare tig.239aj, 

 including dorsal sclerotisation S9d of subgenital plate and its muscles. - 241: via-process (including 

 paa, pda, and vsa, and sclerotisations L2E' and L4N') in ventral view. - Scale: 1mm. 



> p. 1 39 



Figs. 242-244: Nahublattella sp. (Blattaria, Blattellidae, Plectopterinae) - All figures show mirror- 

 images of the original preparations. - 242: Left complex in dorsal view. - 243,244: Left complex in 

 dorsal view; with successive removal of its parts (mainly of dorsal ones); fig.244: hook hla and 

 adjacent areas as well as retained parts of process dca with sclerite LI' separated from remainder of 

 left complex. - Scale: 1mm. 



