217 



Mantoida 



- The individual L4-sclerites produced by the division of L41 and L4d. These are labelled with the 

 capital letters used in the text and in fig. 1-3 19 (e.g. B = L4B). 



- The apodeme swe. swe is always shown in its most primitive condition and position (like in 

 fig. 329a), but only the parts of swe retained in the respective species are patterned and labelled. 



- The insertion areas of the muscles 12 and 14, which are also always shown in their most primitive 

 condition and position (hke in fig. 329a). 



- The processes pda (with its L41-sclerotisation) and paa (with its L2d-sclerotisation). 



The various types can be derived from each other in the way indicated by the arrows. Mantoida 

 (fig.329a) conforms completely with the ground-plan. Parcoblatta and Blaberus can be derived from 

 Nahublattella but differ in some respects (e.g. secondary fusion at AlO). 



