Psammoleptastacus arenaridus Pennak 1942

• Main Authors: Sak, Serdar, Huys, Rony, Karaytuğ, Süphan
• Format: Other/Unknown Material
• Language: unknown
• Published: 2008
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Hexanauplia; Harpacticoida; Arenopontiidae; Psammoleptastacus; Psammoleptastacus arenaridus; North Cape; Seta
• Online Access: https://zenodo.org/record/5492175; https://doi.org/10.5281/zenodo.5492175

PSAMMOLEPTASTACUS ARENARIDUS PENNAK, 1942 A Psammoleptastacus arenardius Pennak, 1942a: Coull (1977) (lapsus calami) Arenopontia arenarida (Pennak, 1942a) Noodt (1955a) Arenopontia (Arenopontia) arenarida (Pennak, 1942a): Wells (1967) Arenopontia arenardia (Pennak, 1942a): Coull (1971, 1977) (lapsus calami) Arenopontia stygia Noodt (1955b) sensu Coull (1971) and Lindgren (1976) Original description: Pennak (1942a): pp. 275–278; plate I, figures 1–11. Type locality: USA, Massachusetts, Woods Hole. Pennak (1942a) collected material from both Nobska and north Cape Cod beaches, but did not specify the type locality; sand washings in vicinity of high tide mark. Material examined: NMNH: one ♂ syntype mounted in toto on slide, and partly remounted by one of us (RH); erroneously labelled ‘ Paraleptastacus arenaridus n.g. n. sp.’; Cat. no. 81982; leg. R. W. Pennak, September 1939. Partial redescription Male: Total body length from tip of rostrum to posterior margin of caudal rami: 325 M m. Body: slender and cylindrical, without clear distinction between prosome and urosome. Hyaline frills of thoracic somites weakly developed and crenulated (Fig. 6A, B); those of abdominal somites strongly developed and consisting of rectangular digitate lappets (Fig. 6A). Caudal rami (Fig. 6A, C): approximately 2.8 times longer than basal width, tapering posteriorly; with one pore dorsally, one pore near ventral proximal margin, and two pores laterally near outer spinules; outer distal corner produced into posteriorly directed recurved spinous process, accompanied by ventral spinular row at base; dorsomedial surface with posteriorly directed spinous process. Armature consisting of seven setae: seta I, small; setae II and III, long and naked; seta IV, short, sparsely pinnate, located between seta V and distal spinous process; seta V, long and with fracture plane; seta VI, small, naked, and fused at base to seta V; seta VII, weakly foliaceous and triarticulate at base. Rostrum (Fig. 6D): small, broadly subtriangular, tapering distally, ...