80 



The large hook hla is evaginated from the left ventral wall of the left complex. The distal 

 part of hla is sclerotised by L3 (fig.87-90, 97, 98), a large basal part of hla is membranous 

 (30 in fig.97, 98). By introverting this membrane 30, hla can be retracted rather far into 

 the phallomere (the retracted state is shown in the figures). L3 is connected with L4K by 

 a ribbon of weak sclerotisation (L3a in fig. 89, 98), which crosses the membrane 30. 



Right phallomere 



Sclerite R3 occupies the (right-)anterior ventral wall (fig.99-103). Sclerite R2 articulates 

 with the left posterior end of R3 (A7 in fig. 100- 102). R2 is a plate of irregular shape, 

 with a ridge-like elaboration in its left-dorsal part (fig.99, 100, 103). The right-ventral part 

 of R2 has the extension R2m (fig. 101, 102) mentioned above. Posterior to the central part 

 of R3 the ventral wall of the right phallomere curves dorsad and somewhat anteriad to 

 form a central invagination (cbe in fig. 99-101; compare fig. 102 and 104). 

 Posterior to the right part of R3 sclerite RIF adjoins, and the two sclerites articulate (A3 

 in fig.99, 100, 102). RIF extends from its central part behind A3 in two directions: The 

 ventral arm bends left-dorsad (along edge 16, fig. 102, 104) and largely occupies the right- 

 dorsal wall of the cbe-invagination (fig.99, 104). The posterior margin of this arm forms 

 a ridge (pva in fig.99, 103). The median end of this arm articulates with the left-dorsal 

 end of R2 (A6 in fig.99, 100, 101). The dorsal arm of RIF extends posterodorsad (fig.99, 

 100, 102); its dorsal margin folds back to the right and ventrad to form a sclerotised groove 

 rge (fig.99, 102). Behind A3 and on the ventral arm the sclerotised cuticle is considerably 

 thickened (cross-sections in fig. 104). 



The posterior part of the right phallomere is a large dorsal lobe fda (fig.99, 103), whose 

 dorsal and ventral walls are partly occupied by sclerite RIJ. The dorsal anterior end of 

 RIJ articulates with the dorsal arm of RIF (A8 in fig.99), its ventral anterior end is in 

 close contact with the base of the ventral arm of RIF (A9 in fig. 102, 103). The tendon 

 tre (fig.99) originates from the anteriormost dorsal wall of the fda-lobe. In its right wall 

 the fda-lobe has a large membranous area (17 in fig.99, 103). 



Subgenital plate and posterior abdominal segments 



Fig. 83, 84 (posterior segments); fig.86 (subgenital plate S9). The ventral part of tergite 10 

 TlOv is moderately extensive. Strip-like Pv-sclerites are present; they are laterally 

 connected with the paraprocts Pp. The Ca-sclerites are curved ribbons immediately median 

 to the cereal bases (no distinct bulges present). The Cc-sclerites are dorsoventrally curved 

 plates on paired shallow outfoldings beneath the anterior margin of TlOv and above the 

 subanal lobes sbl. Cb-sclerites are missing. The articulations A98 and A99 are well- 

 developed. 



Figs.99-104: Tryonicus parvus (Blattaria, Blattidae, Tryonicinae) - 99: Right phallomere in dorsal 

 view. - 100: Right phallomere in left-dorsal (somewhat anterior) view. - 101: Right phallomere in 

 left-ventral view. - 102: Right phallomere in right-ventral view. - 103: Right phallomere in dorsal 

 view; some dorsal elements removed. - 104: Right phallomere in right-ventral view; most elements 

 shown in fig. 102 removed. - Scale: 1mm. 



