331 



part of L4C, pda, L3, and hia in Archiblatta and of L4N, pda, L3, and hla in 



Ciyptocercus, fig. 65, 150). As a result, Grandcolas has certainly misidentified L2d* and 

 L3* in Ciyptocercus (as compared with Blattinae, Polyphaga, Ergaula, and probably 

 Hetewgamodes). 



As regards Cn^ptocercus and Therea, the sclerites L3* (or L3v* and L3d*) as well as the 

 L2d* are probably also not homologous (compare the inteipretation of the r/z^r^fl-sclerites 

 above), since in Therea L3v* is ventral to L2d*, whereas in Cryptocercus L3* is dorsal 

 to L2d*. No argument is given to explain this difference. 



Sclerite R2* sensu Grandcolas (C) 



As regards Periplaneta, Grandcolas follows McKittrick (1964) in the definition and 

 demarcation of R2*. This R2* includes sclerite R2 but additionally the regions Kit and 

 Rlc (= sclerite RIF). The two sclerites of this R2*, R2 and RIF, are dorsoventrally 

 articulated with each other in A6 (fig. 75, 76). The homology relations which Grandcolas 

 assumes concerning the R2*-sclerotisations are in some respects not completely clear. This 

 is in part due to incomplete information about which sclerotisations are assigned to R2* 

 and to the incompleteness of the figure showing the phallomeres of Periplaneta. 

 In fig.l showing Periplaneta, Grandcolas labels that sclerite R2* which I designate R2 

 in Blattinae / Polyzosteriinae (fig. 75-77). However, RIF is not contained in this figure. 

 Since in McKittrick RIF is assigned to R2* (McKittrick 1964, fig. 108: the central and 

 the right parts of the slerite termed R2), RIF is probably part of R2* in the terminology 

 of Grandcolas. 



For Polyphaginae and Cryptocercus Grandcolas evidently assumes a fusion of the two 

 sclerites of R2* (R2, RIF) and a concomitant loss of articulation A6. This is indicated 

 by one of the supposed synapomorphies of Cryptocercus and Polyphaginae: "Sclerite R2* 

 with two tubercles, which are not articulated dorso-ventrally" (p. 151). (The only 

 articulation within McKittrick's R2 is A6 between my sclerites R2 and RIF, fig. 75, 76, 

 which is a ground-plan feature of Blattaria). In fig. 3 and 5 showing Heterogamodes and 

 Therea, Grandcolas labels that sclerite R2* which I designate R2 in Polyphaga and 

 Ergaula (fig. 135-137); the entire sclerite RIM is designated R3d*, without any 

 contribution of R2*. In fig. 6 showing Cryptocercus, Grandcolas labels that sclerite R2* 

 which I designate RIF (fig. 163); sclerite R2 is designated N* (see below in (D)). Hence, 

 RIF = R2* of Cryptocercus and R2 = R2* of Polyphaginae are regarded as the results 

 of this fusion and as strictly homologous. I cannot agree with these homology assumptions: 



- That RIF of Cryptocercus has developed by a fusion of RIF and R2 of Periplaneta is 

 certainly wrong: In Cryptocercus RIF and R2 take the same relative positions as RIF 

 and R2 do in Periplaneta (and in Eurycotis, compare fig. 75 and 161 and in 6.7.4., 

 6.7.6.), and these sclerites are certainly strictly homologous. Articulation A6 is in 

 Cryptocercus as well-developed as in Emycotis. 



- That R2 of Polyphaginae has developed by a fusion of RIF and R2 of Periplaneta is, 

 in my view, also wrong: In Polyphaga and Ergaula the sclerotisation homologous with 

 RIF of Periplaneta (regions Rlc and Rlt) is contained in the anterior part of sclerite 

 RIM (compare fig.332e and i), and the R2-sclerites of these species are strictly 



