328 



Grandcolas (1994) investigated the phallomeres of Periplaneta americana (Blattinae), 

 Cryptocercus punctulatus, and several Polyphaginae and proposes a homology hypothesis 

 for the phallomere sclerites. He finds many synapomorphies suggesting Cryptocercus to 

 be a subordinate taxon of Polyphaginae. However, his homology hypothesis is very 

 different from my homology assumptions for Archiblatta (Blattinae), Eurycotis 

 (Polyzosteriinae), Polyphaga, Ergaula (Polyphaginae), and Cryptocercus, and these 

 discrepancies and the resulting assignment of Cryptocercus have to be discussed. 



9.1. Discussion of the homology relations assumed by Grandcolas 

 The data base of Grandcolas 



Grandcolas gives data on phallomere morphology in figures showing the cuticular 

 phallomere elements of Periplaneta americana (fig.l), Heterogamodes ursina (fig. 3), 

 Therea petiveriana (fig. 5), and Cryptocercus punctulatus (fig. 6), and in sketches showing 

 the principal sclerite pattern in Blattinae (fig.2) and Polyphaginae (fig.4). He terms the 

 sclerites in the same manner as McKittrick (1964), but due to different homology 

 assumptions the names of the sclerites are in many cases different, too. Some differences 

 result from Grandcolas' assumptions on side-homologies, which are expressed by giving 

 side-homologous sclerites the same names (except for L or R in the first position to name 

 the side). The sclerite terminology of Grandcolas is rather different from mine, and table 

 2 gives the synonymy and the homology assumptions. To distinguish them from mine the 

 terms of Grandcolas will be provided throughout with 



Table 2: Synonymy of the sclerite terms of Grandcolas (1994) and those used in this paper. 

 Terms of Grandcolas are provided with *. Somewhat questionable synonymies are provided with ?. 

 LI of Periplaneta (2nd column): In his fig.2 Grandcolas 1994 assigns LI to L2*, but it is not clear 

 whether he assigns it to L2d* or to L2v*. 



Periplaneta 





Archiblatta 



Cryptocercus 



Therea 



Heterogamodes 



LI* 



L5 



LI 



LI 



LI 



L2d* 



L4C and LI? 



L3 



L4N? 



L4N? 



L2v* 



L2 and LI? 



L2 



L2 



L2 



L3d* 



L3 



part of L4N 



L4K? 



L3 



L3v* 



L4D 



part of L4N 



L3? 



L4K or L4M? 



vp* 



L4G 



L4G 



L7? 





N* 





R2 



L8 



L8 



R2* 



R2 and RIF 



RIF 



R2 



R2 



R3d* 



RIG and RIH 



RIJ 



RIM 



RIM 



R3v* 



R3 



R3 



R3 



R3 



In Grandcolas' fig. 3 and 5 showing Heterogamodes and Therea at least some of the 

 apomorphies listed in 7.4. can be recognised, and these permit the integration of these 

 species into my phylogenetic hypothesis. Therea, fig. 5, shows five of these apomorphies: 



