Acutiserolis poorei sp. nov. from the Amundsen and Bellingshausen Seas, Southern Ocean (Crustacea, Isopoda, Serolidae)

Abstract

Brandt, A. 2009. Acutiserolis poorei sp. nov. from the Amundsen and Bellingshausen Seas, Southern Ocean (Crustacea, Isopoda, Serolidae). Memoirs of Museum Victoria 66: 17-24.Acutiserolis poorei sp. nov., is described from the Amundsen and Bellingshausen Seas, Southern Ocean. Comparison with the type material of the most similar species, Acutiserolis spinosa (Kussakin, 1967) revealed that A. poorei may be distinguished from A. spinosa by broader eyes, less acute and slightly shorter coxal plates and the small tubercles that are irregularly scattered on the dorsal surface. Additionally, no suture divides the fi fth coxal plate and the head has a prominent mediocaudal spine reaching to the middle of the third pereonite; the appendix masculina is considerably shorter than that of A. spinosa, while the pleotelson of A. poorei is covered with some small tubercles and the mediocaudal tip is slightly more prominent than that of A. spinosa.

Molecular differentiation in sympatry despite morphological stasis: deep-seaAtlantoserolis Wägele, 1994 andGlabroserolis Menzies, 1962 from the south-west Atlantic (Crustacea: Isopoda: Serolidae)

“…Serolidae were first investigated from Subantarctic and Antarctic localities of the South Atlantic Ocean by Sheppard (), on the basis of the genus Serolis Leach, 1818. Since then, Serolidae have been considered to occur mainly in the southern hemisphere, being particularly rich in species in the Southern Ocean, Australia, and New Zealand (Harrison & Poore, ; Poore , , ; Poore & Brandt, ; Brandt, ; Bruce, ; Poore & Storey, ; Storey & Poore, ). Bruce () noted that only five species are known from the northern hemisphere.…”