Pyrearinus castaneus Costa, 1978: 199 Holotype: 1 ♂. Linhares, ES—Brasil, X.1972, P. C. Elias; [on red] Holótipo; [on red] Pyrearinus castaneus sp. n., holótipo, C. Costa det. 1978. Conservation status: Good condition; abdomen and genitalia glued on cards under specimen (genitalia on transparent card). Paratypes: 9 [unknown sex]. Linhares, ES—Brasil, X.1972, P. C. Elias [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978. Conservation status: Good condition; one specimen with abdomen and genitalia glued on cards under specimen (genitalia on a transparent card), and one with genitalia into microvial with glycerin. Paratype: 1 [unknown sex]. Ribeirão Preto, SP—Brasil, VII.1955, M.P. Barreto col.; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978. Conservation status: Good condition. Paratype: 1 [unknown sex]. Anno 1907, São Paulo, E. R. [illegible] da Serra; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978. Conservation status: Good condition. Paratype: 1 [unknown sex]. Bahia; Pyrophorus [illegible] Germ., [illegible], Fleutiaux vld.; Riksmuseum Stockolm; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978. Conservation status: Good condition. Paratype: 1 [unknown sex]. E. Santo, Guarajari, X.[1]942; Pyrophorus phosphoreus Germ., A. Cobos det. 1958; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978. Conservation status: Good condition. Paratype: 1 [unknown sex]. Rio grand do Sul; CNHM 1955, Karl Brancsik Colln. ex Eduard Knirsch; CNHM; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978. Conservation status: Good condition. Paratype: 1 [unknown sex]. Bochiol; Collection E. Candéze; Pyrophorus lampadion Ill., dét. F. Cándeze; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978; Coll. MZSP, São Paulo BR, Ex coll. ISNB. Conservation status: Good condition. Paratype: 1 ♂. Vila Victoria, Prov. de Bahia, Ch. Pujol 1890; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978; MNHNP. Conservation status: Good condition; genitalia and abdomen glued on card under specimen. Paratype: 1 ♂. Cachimbó, Prov. de Bahia, Ch. Pujol 1890; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978; MNHNP. Conservation status: Good condition; genitalia and abdomen glued on card under specimen. Paratypes: 1 ♂, 1 ♀. Minas Geraes, Fruhstorfer; Museum Paris, 1952, Coll. R. Oberthur; MNHNP; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978; MNHNP. Conservation status: Good condition; genitalia glued on transparent card under specimen. Paratype: 1 ♂. Brasilia, Mus. Lange; Seckenberg Museum, Frankfurt/Main; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978; MNHNP. Conservation status: Good condition; genitalia and abdomen glued on card under specimen. Paratype: 1 ♂. IB; [on red] Pyrearinus castaneus sp. n., parátipo, C. Costa det. 1978; MNHNP. Conservation status: Good condition; genitalia and abdomen glued on transparent card under specimen.

Published as part of Ferreira, Vinicius De Souza, 2015, An annotated catalogue of the type material of Elateroidea Leach, 1815 (Coleoptera) deposited in the Coleoptera collection of the Museum of Zoology of the University of São Paulo, Brazil, pp. 263-310 in Zootaxa 3937 (2) on pages 290-291, DOI: 10.11646/zootaxa.3937.2.3, http://zenodo.org/record/241218