Phronima sedentaria (Forsskål)

Zeidler, Wolfgang, 2004, A review of the families and genera of the hyperiidean amphipod superfamily Phronimoidea Bowman & Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea), Zootaxa 567, pp. 1-66 : 11

Phronima sedentaria (Forsskål)

Cancer sedentarius Forsskål, 1775: 95–96 .

Gammarus sedentarius — Schousboe, 1802: 11, figs 1–6.

Phronima sedentaria — Latreille, 1803: 291.

Phronima custos Risso, 1816: 121 , pl. 2, fig. 3.

Phronima borneensis Bate, 1862: 318 , pl. 51, fig. 3.

Phronima novaezealandiae Powell, 1875: 294 , pl. 21, figs 1 & 2.

Phronima neozelanica Thomson & Chilton, 1886: 150 .

Phronima spinosa Bovallius, 1887: 25 .

Phronima tenella Stebbing, 1888: 1354–1356 , pl. 161A.

Phronima affinis Vosseler, 1901: 20 , pl. 1, figs 12–16.

Type material The holotype of Cancer sedentarius is in the ZMUC (Forsskål coll.): in spirit .

Type material of synonyms

Type material of P.custos seems to be lost, although the ANSP has a female specimen embedded in a dried salp ( CA 2689 ) from the Guérin­Méneville collection (No. 443) which may represent type material (see Zeidler 1997) .

Type material of P. borneensis could not be found at the BMNH or MNHN and is considered lost.

Type material of P. novaezealandiae could not be found in any museum in New Zealand, or at the BMNH and is considered lost.

Type material of P. spinosa could not be found at the SMNH, ZMUC or in Uppsala and is considered lost.

The holotype of P. tenella is in the BMNH (89.5.15.205): mounted whole on a microscope slide .

The holotype of P. affinis is in the Zoological Museum , Kiel University, Germany (Cr. 0318) .

Remarks

This is the only species of Phronima in which the second antennae of the males are reduced. Females of this species can be confused with P. atlantica , especially when dealing with juveniles, but the pleonites of P. sedentaria possess a posterodistal spinose process which is absent in P. atlantica . It is also similar to P. solitaria , but males of that species have well­developed second antennae, and in females the carpus of pereopod 5 has a strong medial tooth adjacent to the anterior tooth.