Acantholobulus caribbaeus (Stimpson, 1871)

Acantholobulus caribbaeus (Stimpson, 1871) View in CoL

( Fig. 3A View FIGURE 3 )

Micropanope caribbaeus Stimpson 1871: 108 .

Hexapanopeus caribbaeus View in CoL .— Rathbun 1930, 399, pl. 171, figs. 3–5.— Coelho & Ramos 1972: 191.— Mantelatto et al. 2020: 73 View Cited Treatment .

Material examined. 1 male ( CW 6.55 × CL 5.56 mm) , 2 females (CW 5.08 × CL 4.87 mm; CW 6.27 × 4.84 CL mm), station PA03 , 16.vii.2021 ( CCDB 7462 View Materials ) .

Geographic distribution. Western Atlantic— USA (Florida), Antilles, north of South America, and Brazil (Pará, Piauí, Paraíba, Pernambuco, Alagoas, Bahia, Espírito Santo; São Paulo, Paraná, Santa Catarina, Rio Grande do Sul) ( Coelho & Ramos 1972; Abele & Kim 1986; Rieger et al. 1996; Coelho Filho 2006; Almeida et al. 2007b; Coelho et al. 2008; Felder et al. 2009; Vieira & Calazans 2010; Nobrega & Martinelli-Lemos 2016; Mantelatto et al. 2020 as Hexapanopeus caribbaeus ; Marochi & Masunari 2011 as Acantholobulus caribbaeus ).

Remarks. This is the first record of Acantholobulus caribbaeus from Espírito Santo state. This species was first described as a representative of the genus Micropanope , but upon erection of the genus Hexapanopeus Rathbun, 1898 , it was transferred there as Hexapanopeus caribbaeus based on carapace shape ( Rathbun 1898). However, recent revisions of the group suggested that this species is clearly separated from Hexapanopeus sensu stricto, and it is actually more closely related to Acantholobulus Felder & Martin, 2003 . Therefore, H. caribbaeus was transferred to Acantholobulus ( Thoma et al. 2009, 2014), and only recently adopted in WoRMS (2023). The values of the BLAST query cover (92%) and percent identity (>98%) were suitable for this identification, since our sequences aligned with other of the same species ( EU863348 View Materials , EU863381 View Materials , EU863383 View Materials , see Thoma et al. 2009) and with congeneric species, Acantholobulus bermudensis (Benedict & Rathbun, 1891) and A. schmitti ( Rathbun, 1930) ( MF490167 View Materials , MF490168 View Materials , see Mantelatto et al. 2018). Sequence accession number (GenBank): CCDB 7462—16S (OR501068) (present study).