Family PSEUDIDOTHEIDAE Ohlin, 1901

Museums

Regional Maps

• Pseudidotheidae Ohlin, A. 1901. Isopoda from Tierra del Fuego and Patagonia. Wissenschaftliche Ergebnisse der Schwedischen Expedition in die Magellanregion oder nach den Magellansländern 1895-1897 2: 261-306 [274].

Introduction

Five species in one genus confined to southern latitudes comprise Pseudidotheidae. The body is straight and pereopods 2–4 are short, stubby and armed with strong robust setae (Poore and Bardsley, 2004; Noli et al., 2022).

Diagnosis

Body more or less cylindrical, without coxal dorsal plates or pleonal epimera, straight, without flexion. Pereopod 1 gnathopod-like; pereopods 2–4 raptorial, articles broad, with robust setae on flexor margins, differentiated from ambulatory pereopods 5–7; with prominent dactyli, unguis short. Uropodal exopod (smaller ramus) tapering (with terminal seta or setae only). Pleopod 1 peduncle more elongate than rami, longer than on pleopods 2 and 3; exopod of male thickened and with groove on posterior face, ending on tapering distolateral apical extension.

General References

Noli, N., Di Franco, D., Schiaparelli, S., & Brandt, A. 2022. Pseudidothea armata sp. n., a new isopod of the genus Pseudidothea (Crustacea, Malacostraca, Isopoda) from the Atlantic sector of the Southern Ocean. Biodiversity Data Journal 10: e76864

Poore, G.C.B. & Bardsley, T.M. 2004. Pseudidotheidae (Crustacea: Isopoda: Valvifera) reviewed with description of a new species, first from Australia. Memoirs of Museum Victoria 61: 75-83

History of changes