Himerarctia griseipennis (Rothschild, 1909)

Type locality. [Brazil], Amazonas, Fonte Boa.

Type specimen. Lectotype ♁ designated by Watson (1975: 40) (NHMUK).

Taxonomic references. Rothschild (1909; 1910), Hampson (1920), Watson (1975), Watson & Goodger (1986) and Vincent & Laguerre (2014).

Material examined. Brazil, Maranhão: Açailândia, 4°57'14.17"S / 47°30'11.08"W. Light traps, 19–27.xi.1990, V.O. Becker legit, 5 specimens (VOB) .

Month records in Maranhão. November.

Geographical records in Brazil. Amazonas, Pará and Rondônia (Amazon).