Contents 



Page 



Introduction 1 



Acknowledgments 3 



Literature Review 4 



Systematics 6 



Methods and Materials 9 



Collection of Specimens 9 



Preservation of Specimens 10 



Rearing of Immature Stages 11 



Preparation and Study of Specimens 12 



Terminology 13 



Illustrations 14 



General Biology 14 



General Description of Immature Stages 16 



Life History 17 



Keys to the Known Third (Final Stage Larvae) 19 



Key to the Genera 19 



Key to the Known Third Stage Larvae of 7 ro.v 19 



Key to the Known Third Stage Laivae of Omorgus 21 



Generic Description of Trox Larvae 21 



Species Descriptions of Trox Larvae 25 



Generic Description of Omorgus Larvae 39 



Species Descriptions of Omorgus Larvae 42 



Summary 53 



Literature Cited 55 



Appendix. Symbols Used on Figures 59 



Illustrations 61 



V 



