This is Hemileuca peigleri Lemaire, 1981

Multiple males captured here. Most flying - some while at rest. 2 additional photos added. 5 additional photos added.
Male Female Photo is representational from area not this sighting.

PS: this is a full species -- not Hemileuca maia peigleri -- it was elevated to just Hemileuca peigleri after Lemaire described the species in 1981.

See: Peigler, Richard S., and Stephen E. Stone. Taxonomic and Biological Notes on the Hemileuca maia Complex (Saturniidae) with Description of a New Species from Texas and New Mexico.Transactions of the Lepidopterological Society of Japan 40.2 (1989): 149-165.