Pseudosphyrapus

Kakui, Keiichi, Kajihara, Hiroshi & Mawatari, Shunsuke F., 2007, Two new sphyrapodid species (Crustacea: Tanaidacea: Apseudomorpha) from southwestern Japan, Zootaxa 1563, pp. 37-54 : 53

Key to the species of Pseudosphyrapus , excluding Pseudosphyrapus sp. A of Larsen (2003)

1 Rostrum without any process, rounded ................................................................ P. centobi Băcescu, 1981

- Rostrum with process .................................................................................................................................. 2

2 Pleonite epimera rounded ............................................................................................................................ 3

- Pleonite epimera pointed ............................................................................................................................ 4

3 Antennule article 1 with about 10 outer simple setae; outer flagellum three-articulate in female................ ............................................................................................................... P. gutui Kudinova-Pasternak, 1985

- Antennule article 1 with four outer simple setae; outer flagellum five-articulate in female (seven-articulate in male) .......................................................................................................... P. anomalus ( G.O. Sars, 1869)

4 Processes on epimera of pleonite 5 equal in size to those of pleonites 1–4 ............................................... 5

- Processes on epimera of pleonite 5 much larger than rest......................................... P. quintolongus n. sp.

5 Carpus of pereopod 1 with three ventral spiniform setae. Basal article of pleopod with one ventral plu- mose seta ........................................................................................................ P. s e r r a t u s ( G.O. Sars, 1882)

- Carpus of pereopod 1 with two ventral spiniform setae. Basal article of pleopod lacks ventral plumose setae .......................................................................................................................... P. vladimiri Guţu, 1989