Psychrodromini Martens, 2001, 2023

Martens, Koen, Ferreira, Vitor Gois, de Almeida, Nadiny Martins & Higuti, Janet, 2023, On Caledromus robinsmithi, a new genus and species of Psychrodromini Martens, 2001 (Crustacea, Ostracoda, Herpetocypridinae) from New Caledonia (Pacific Ocean), ZooKeys 1165, pp. 155-182 : 155

Tribe Psychrodromini Martens, 2001

Diagnosis

(adapted from Martens 2001). Mostly compact carapace, with inwardly displaced selvage present or absent, fused zones without marginal septa. Rome organ on Al small or medium-sized, consisting of one or two parts. Second segment of Mx1 palp cylindrical (rectangular in the dissection), with length 1.5-2.5 × the distal width. Seta dl on T2 2-4 × longer than seta d2. CR symmetrical or slightly asymmetrical, with proximal seta absent or shaped as a spine. Hp with 0-6 additional postlabyrinthal coils of the spermiduct; sometimes with a hook-like structure on the medial shield.

Genera allocated.

Caledromus gen. nov. (here allocated); Humphcypris Martens, 1997; Psychrodromus Danielopol & McKenzie, 1977; Somalicypris Martens, 1977.

Remarks.

The character "additional postlabyrinthal coils of the inner spermiduct in the Hp" refers to coils that cover most of the internal parts of the Hp, including the labyrinth, before the normal ventral coils which lead to the bursa copulatrix; see Martens (1997) for examples in Humphcypris and Somalicypris . For a discussion on the altered position of Paranacypris Higuti et al., 2009: see below. The above diagnosis therefore deviates from that in Higuti et al. (2009).