Bagatus nereus Pires, 1982

Fernandes, Cristiana S. Serejo Agatha C. S., 2025, Illustrated type catalogue of marine Isopoda (Crustacea: Peracarida) from the Museu Nacional / UFRJ, Brazil, Nauplius (e 20250535) 33, pp. 1-39 : 9

Bagatus nereus Pires, 1982

( Fig. 4A )

Bagatus nereus Pires, 1982: 254 , figs. 85–105.

Carpias nereus — Bowman and Morris, 1979: 650. — Pires-Vanin, 1998: 607.

Type material. Holotype: male, 2.5 mm, MZUSP 4561 . Paratypes: 2 males, 1 female, 1 juvenile, MNRJ 6277 ; 6 male, 5 female, 11 juveniles, MZUSP ; 2 males, 1 female, USNM ; 3 males, 1 female, IOUSP ( Pires, 1982).

Type locality. Flamengo Inlet (23°30’46.8”S

45°06’36.6”W), Ubatuba, SP , Brazil .

Geographic distribution. Brazil ( RJ, SP) ( Pires,

1982; Pires-Vanin, 1998).

Habitat. Found in shallow water among algae, mussel beds and under stones ( Pires, 1982; Pires-Vanin, 1998).

Current systematic position. Carpias nereus ( Pires,

1982).

Remarks. Currently, the genus Bagatus is considered a junior synonym of Carpias Richardson, 1902 ( Bowman and Morris, 1979; Boyko et al., 2023). The paratypes deposited at Museu Nacional from Praia do Forte, Cabo Frio, RJ, are registered as the voucher number MNRJ 6277. Pires (1982) included this material as a paratype but did not give a voucher number.

Figures

Figure 4.Carpias nereus (Pires,1982): A, paratype, male,2.5 mm, MNRJ 6277.Janaira gracilis Moreira and Pires, 1977:B, paratype, male, 2.8 mm, MNRJ 6276.