These wing scales are tiny overlapping pieces of chitin on a butterfly or moth wing.
Lepidotera includes butterflies, skippers, and moths which are not scientific terms. Typically whay we call a moth has feathery or thread-like antenna and fly at night. They create a cocoon of silk around their chrysalis. Butterflies and skippers fly at day and have antenna that end in knobs. They do not create cocoons. However, this is just a rule of thumb.
Adults typically have two pairs of wings with the foewing larger than the hind wing and have a coiled proboscis for siphoning nectar. Caterpillars have chewing moth parts.
"Inchworm, inchworm Measuring the marigolds Seems to me you'd stop and see How beautiful they are" by Frank Loesser; from the movie "Hans Christian Anderson"
White-lined sphinx - Hyles lineata
Tobacco hornworm - Manduca sexta
Armyworm - Mythimna unipuncta
Small Mottled Willow Moth (Beet armyworm) - Spodoptera exigua