APPENDIX TO CHAPTER II 



41 



APPENDIX TO CHAPTER II 



KEY TO THE PRINCIPAL FAMILIES OF LEPIDOPTERA 



a\. Antennae club-shaped at apex ; wings when at rest 

 held vertical (Fig. 19) . .. 



2 - Antennae usually having the form of a bristle, spin- 

 dle, or thread, often with a comb ; wings at rest 

 held out flat (Fig. 23), or else folded over body 

 like a gable roof (Fig. 25). 

 bi. Hind wing usually with one or two dorsal veins 



[Macrolepidoptera, large-winged moths]. 

 d. Antennae spin die- shaped or keeled, rarely 

 club-shaped ; wings small ; dusk fliers. 

 d\. Antennae prismatic . . . . . 



cZ 2 . Antennae not prismatic, but 



e\. attenuated at end, occasionally 

 pectinate . . . - . 



/i. Clear winged (Sesiina). 

 /2. Wings speckled, antennae 

 much longer than head 

 (Cossina) . 

 / 3 . Antennae hardly longer than 



head (Hepialina). 



62- club-shaped, occasionally pec- 

 tinate . . . , ; 



C 2 . Antennae bristle- or thread-like ; wings 



mostly broad, night fliers. 

 d\. Wings when at rest placed like a 

 gable roof over body, or envelop- 

 ing it ; proboscis well developed. 

 e\. Subcosta of hind wing united with 

 radius for a considerable dis- 

 tance ; body hairy . . . 



e 2 . Subcosta of hind wing nearly or 

 quite distinct from radius ; ab- 

 domen ending conically . 



Papilionidce 



(Butterflies) 



Sphingidce 

 (Hawk-moths) 



Xylotropidce, 



(Wood-borers) 



Zygcenidce 



(Zygenids) 



Arctiidce 



(Tiger-moths) 



Noctuidce 



(Owlet-moths) 



