330 



LI of Polyphaginae and Ciyptocercus is only based on the similar position next to the 

 genital opening and since the genital opening has been misidentified in Polyphaginae and 

 Cryptocerciis, the homology of these sclerites is no longer supported. McKittrick (1964) 

 assumes homology for the LI of Polyphaginae, Cryptocercus, and Blattinae (as I do), and 

 this assumption is confirmed by the similar morphology of the sclerites, by a similar 

 position relative to other sclerites, by similar muscle insertions, and by a position next to 

 the phallomere-gland opening (discussion in 6.1.)- 



Sclerites L2d*, L3d*, and L3v* sensu Grandcolas (B) 



As regards L2d*, L3d*, and L3v* of Therea and Heterogamodes, neither the muscles nor 

 the exact morphology and relative position of the sclerites are shown in fig. 3 and 5 of 

 Grandcolas, and an exact homologisation with the sclerites of Polyphaga, Ergaula, 

 Cryptocercus, and Periplaneta is, therefore, not possible. 



L3v* of Periplaneta is sclerite L4D (L4n-region, fig.325f)- L3v* of Heterogamodes might 

 correspond to either L4M or L4K of Polyphaga and Ergaula (fig. 325k). However, neither 

 L4M nor L4K nor any other sclerite of Polyphaga and Ergaula is strictly homologous 

 with L4D (discussion in 6.3.4.). Hence, the sclerites L3v* of Heterogamodes and 

 Periplaneta are certainly not homologous. L3v* of Therea is possibly homologous with 

 L3 (on the hla-hook) of Ergaula, Polyphaga, and Periplaneta. 



L2d* of Periplaneta is sclerite L4C (L41- and L4d-regions, fig.325f). L2d* of Therea 

 and Heterogamodes probably correspond to L4N (on the pda-process) of Polyphaga and 

 Ergaula (fig. 325k). L4N, however, is not strictly homologous with L4C but only with the 

 posterior part of L4C (discussion in 6.3.4.). 



L3d* of Periplaneta and Heterogamodes - I agree with this homology assumption - 

 correspond to sclerite L3 of Blattinae, Polyphaga, and Ergaula (on the hla-hook in fig.53, 

 117). L3d* of Therea occupies a shallow bulge (not a long hook as hla is), and hla is 

 hence supposed to be reduced; however, the long and somewhat hook-like process, whose 

 sclerotisation is designated L3v*, is in my view more likely to be hla. I suppose that 

 L3d* of Therea is sclerite L4K, which is on a shallow bulge like in Ergaula (fig.326d). 

 In Cryptocercus (fig. 6 of Grandcolas, fig. 150, 151) the sclerites are designated as follows: 

 L3* (Grandcolas probably assumes a fusion of L3v* and L3d*) is L4N. Hence, L4N and 

 pda of Cryptocercus are regarded as the homologues of L3 and hla of Polyphaga and 

 Ergaula (fig. 117) and Blattinae (fig.53). The hla-hook of the other species is thus supposed 

 to be quite reduced in Cryptocercus (as Grandcolas also supposes for Therea, which 

 assumption, however, is probably not true). 



L2d* is L3. Hence, L3 and hla of Cfjptocercus are regarded as the homologues of L4N 

 and pda of Polyphaga and Ergaula (fig. 117) and of L4C and pda of Blattinae (fig.53). 

 In my view, hla and L3 of Cryptocercus are homologous with hla and L3 of the other 

 species (discussion in 6.4.3.), and pda and L4N of Cryptocercus are homologous with 

 pda and L4N (or the posterior part of L4C, respectively) of the other species (discussion 

 in 6.3.4.). These relations are clearly demonstrated by the muscles inserting on these 

 elements (compare e.g. 114 in Euiycotis and Cryptocercus, fig. 72, 157) and by the relative 

 positions of the respective elements (compare the dorsoventral arrangement of the posterior 



