178 



Bionomics of Cryphalus abietis 



(.sc.) and scutellar {scr.) folds there is a deep crescent-shaped hollow 

 or groove; on the anterior dorsal side of this groove lies a spiracle (.s.). 



The 8th abdominal segment, in side view, shows a similar composition 

 to the first seven segments except that the prescutal and the scutellar 

 folds are just traceable. The 9th abdominal segment is similar to the 

 8th except that the prescutal fold is absent and there are no spiracles. 

 The 10th segment, in side view, shows three lobes surrounding the anus: 

 the infra-anal lobe {ia.) situated ventral to the anus; the supra-anal 

 {su.) dorsal and the para-anal {jpa.) between the above two. 



Looking at the larva from the ventral side (Fig. 7) two other folds 

 may be seen on the thoracic segmsnts, namely the sternal {st.) and the 

 poststernellar {j^s.). 



Fig. 7. Ventral aspect of larva of C. abictis (greatly magnified). 



