276 



ventral wall of the Ive-pouch is mostly membranous and is at the same time the left anterior 

 part of the dorsal wall of the vla-lobe. The ejaculatory duct D opens into the right anterior 

 part of the dorsal vla-wall. Both the presence of a small sclerite L5 in the dorsal vla-wall 

 and, if present, its exact position are questionable. 



The ventral wall of via is part of the ventral wall of the left complex and is sclerotised 

 by the right posterior part of L4 (L4v-region). The ventral wall of via is for most or all 

 of its length confluent with the remaining ventral wall of the left complex (i.e. only most 

 posteriorly via has a free left edge 61, or edge 61 is missing). The Ive-pouch and the vla- 

 lobe are rather broad but do not reach the left edge of the left complex. 

 The L4-sclerotisations as a whole form an arch (open posteriorly) in the ventral wall and 

 at the left edge of the left complex. The L4-regions L41, L4d, L4n, and L4v (and possibly 

 L4c) are present. The ventral wall between these regions is membranous. The morphology 

 of the L41- and L4d-regions is like in Mantoida and Archiblatta: L41 is undivided and 

 extends over the left anterior margin and the whole left edge of the left complex. In the 

 dorsal wall L41 is restricted to the left margin. The posteriormost part of L41 sclerotises 

 a short bulge-like process pda, which takes a position immediately to the left of the paa- 

 process and whose sclerotisation is connected with the L2d-sclerotisation of paa. The swe- 

 apodeme extends over most of the length of L41. In its anterior part swe is beam-shaped 

 by cuticular thickening, in its posterior part it is groove-like. L4d is distinctly prominent 

 from the outline of L41 and directed to the right (and possibly sHghtly anteriad). The L4n- 

 region is present; whether it is connected with or separated from the L41-region cannot 

 be decided. The nla-process on L4n is possibly also present (according to its functional 

 correlation with 114 and hla; discussion in 7.5. (M), (N)). Whether the L4c-region is 

 present is not decidable. (If it should be present, it is certainly firmly connected with the 

 L4v-region right-posterior to it. At least, there is no separate sclerite L4F). Whether the 

 L4v-region (or the L4c-region, if present) is connected with or separated from the anterior 

 end of the L41-region is unclear. The hla-hook and its L3-sclerite are probably present. 

 If this is true, the ground-plan condition of hla and L3 can be assumed to correspond with 

 the ground-plan situation in Blattaria (compare in 7.3.). 



Right phallomere 



Sclerite R3 lies more or less transversely in the anteriormost ventral wall. At least its right 

 margin and the right part of its anterior margin form a groove- (or somewhat beam-) like 

 apodeme age, which reaches the A3-articulation. The age-groove bears a keel 3. The right 

 posterior end of R3 has an articulation A3 with the Rlc-region. Posterior to R3 the ventral 

 wall of the right phallomere curves dorsad and somewhat anteriad to form a large 

 invagination cbe. 



The posterior part of the right phallomere is composed of a dorsal lobe fda and of a ventral 

 tooth pia. fda and pia are confluent along the right edge of the right phallomere and 

 diverge to the left. Rl is probably an undivided sclerite (or, with less probability, it is 

 divided into three sclerites RIF, RIG, and RIH, corresponding to the regions Rlc-i-Rlt, 

 Rlv, and Rid, by the articulations A8 and A9). Rl occupies the area behind the A3- 

 articulation (Rlc-region), part of the right-dorsal wall of the cbe-invagination (Rlt- 



