Tironella pervicax (J.L. Barnard, 1967 ) Just, 2022

Just, Jean, 2022, Tirons of the world: a review of ‘ tironid’ amphipods, description of new genera and species, and establishment of a new subfamily Tironinae Stebbing, 1906 stat. nov. (Crustacea, Synopiidae), Zootaxa 5139 (1), pp. 1-89 : 22

Tironella pervicax (J.L. Barnard, 1967) comb. nov.

( Figs 1 , 8 Pclv, 9 Pdac)

Pseudotiron pervicax J.L. Barnard, 1967 , 170–172, fig. 84.—J.L. Barnard (1972, p. 46).

Type fixation. Holotype, ♂, 4.7 mm.—Original designation. AHF No. 6115. [Not seen].

Remarks. Pseudotiron pervicax was illustrated and described by J.L. Barnard (1967), who had some doubt about its placement in Pseudotiron . He outlined many differences from the genotype Pseudotiron bouvieri Chevreux, 1895 and the more widely known P. longicaudatus Pirlot, 1934 , but chose not to create a separate genus for the species.

Pseudotiron pervicax , being very close to Tironella bathyalis gen. et sp nov. described above, is here transferred to the new genus Tironella .

Distribution. West coast USA south to Baja California, 1095–1205 m.

Figures

FIGURE 1. Representative habitus illustrations of tironin genera. Tiron spiniferus (from Sars, 1895 pl. 140, ♀ 8 mm); Pseudotiron miratus sp. nov. (this paper, ♀, 4.5 mm); Tironella pervicax comb. nov. (from J.L. Barnard, 1967 fig. 84, ♂ 4.7 mm); Glandulotiron pilocaputis sp. nov. (this paper, ♀, 6.3 mm); Metatiron tropakis (from J.L. Barnard, 1967 fig. 45, ♀, 4.9 mm); Minitiron bellairsi comb. nov. (from Just, 1981 fig. 1, ♀ 2.4 mm). a and b, dactylus and unguis of pereopods 3–7: a, stubby; b, pre-stubby.

FIGURE 8. Tironella bathyalis gen. et sp. nov. Holotype, ♀, except P, Pseudotiron pervicax. clv, head lateral view; mx1, maxilla 1; P clv, lateral view of head of P. pervicax (from J.L. Barnard, 1967, fig. 84 k); tel, telson; us, urosome.