CONTENTS. 



Introduction 165 



Position of the Scolytoidea 167 



General anatomy. . . '. ■ 168 



Taxonomy 169 



Morphological characters 169 



Superfamily characters 169 



Family characters 170 



Subfamily characters 170 



Generic characters 171 



The antennae 171 



The eyes 174 



The mouthparts 174 



Characters in general ■. 175 



The body 175 



Form 175 



Color 176 



Vestiture 176 



Sculpture 176 



Armatures ..:.... 176 



Head 177 



Prothorax 177 



Mesothorax 177 



Metathorax 178 



Legs 179 



Elytra 179 



Posterior wings 179 



Abdominal tergites 180 



Abdominal spiracles 181 



Abdominal sternites 182 



Stridulating accessories 182 



Internal anatomy 183 



Digestive system ■ 183 



Proventriculus 183 



Reproductive organs 184 



The reproductive organs of the male 184 



Posterior elements 185 



Anterior and median elements 190 



Variations and combinations of the elements 190 



Terminology of the reproductive organs 192 



Classifications based on the reproductive organs 194 



Secondary sexual characters 195 



The pupae 196 



The larvae 197 



The eggs 197 



The embryo 197 



III 



