CONTENTS 



Page 



Foreword iii 



Definition and classification 1 



Key to groups of Aegeriidae based on antennae and male genitalia 5 



Kej' to North American genera of Aegeriidae 6 



The Synanthedon group 7 



Genus Sannina Walker 7 



Genus Sanninoidea Beutenmiiller 9 



Pensiononia, new genus 14 



Ramosia, new genus 22 



Genus Carmeiita Hy. Edwards 45 



Sylvora, new genus 77 



Genus Co-nopia Hiibner 81 



Genus Synanthedon Hiibner 87 



Genus PalDtta Beutenmiiller 97 



Hymenoclca, new genus 9S 



Genus Alcathoe Hy. Edwards 100 



Color key to North American species, races, and varieties of the 



genus Alcathoe 101 



Genus Podosesia Moschler 108 



Genus Tfiamnosphecia Spuler Ill 



Genus Vespamima Beutenmiiller 127 



Key to North American species of Vespamima 127 



The Signaphora group 131 



Signaphora, new genus 131 



The Calasesia group 1 33 



Genus Calasesia Beutenmiiller 133 



The Cissuvora group 134 



Cissuvora, new genus 134 



The Paranthrene group 136 



Genus Paranthrene Hiibner 136 



Key to North American species and forms of Paranthrene 137 



Vitacea, new genus 151 



Key to North American species of Vitacea 152 



Genus Ga'ea Beutenmiiller 158 



Key to North American species of Gaca 159 



Genus Albuna Hy. Edwards 162 



Key to North American species of Albuna 162 



Genus Eiihageiia Hy. Edwards 169 



Key to North American species of Euhagena 170 



The Aegeria group 1 73 



Genus Aegeria Fabricius 1 73 



Key to North American species of Aegeria 173 



The Meliitia group 181 



Genus Melittia Hiibner 181 



Key to North American species of Melittia 182 



