Idaea pervertipennis. 
Abacena accincta 
Abantiades labyrinthicus 
Abbot's Bagworm Moth 
Abbreviated Button Slug 
Abisara geza 
Abisara neavei 
Abrupt Epiblema Moth 
Acacia blue 
Acadian hairstreak 
Acharia hyperoche 
Achea euryplaga 
Achemon sphinx 
Acherontia atropos 
Acherontia lachesis 
Acleris cornana 
Acleris fragariana 
Acleris hastiana 
Acleris macdunnoughi 
Acmon blue 
Acorn Moth 
Acosmeryx anceus 
Acosmeryx castanea 
Acosmeryx sericeus