Meleager's blue 
Melese amastris 
Melese babosa 
Melese flavimaculata 
Melese intensa 
Melese nebulosa 
Melese peruviana 
Melese punctata 
Meliboeus swordtail 
Melinodes detersaria 
Melipotis famelica 
Melitaea caucasogenita 
Melitaea nevadensis 
Melitaea parthenoides 
Melitaea saxatilis 
Melittia sangaica 
Melonworm Moth 
Memphis praxias 
Memphis pseudiphis 
Menapis Tigerwing 
Menelaides polytes ledebouria 
Menelaus Morpho 
Menophra maderae 
Meragisa innoxia