Lassaba acribomena 
Lassaba vinacea 
Lassauxs sphinx 
Latebraria amphipyroides 
Latreille's Altinote 
Lattice Brown 
Latticed Heath 
Laudable Arches 
Laurel Sphinx 
Lawn armyworm 
Lead-colored lichen moth 
Leading Red-Ring 
Leafy Sphinx 
Least Carpet 
Least skipper 
Least-marked Euchlaena 
Lebeau's Rothschildia 
Lebeda cognata 
Lebeda nobilis 
Lecontes haploa 
Leistera hampsonia 
Lemaireia loepoides 
Lemon Migrant 
Lemon Pansy