Three artotrogids (Crustacea: Copepoda: Siphonostomatoida) from the Ross Sea, Antarctica

  • Mercedes Conradi University of Sevilla
Keywords: Antarctica, Artotrogidae, redescription, Neobradypontius, Sestropontius, Cryptopontius

Abstract

The Artotrogidae, one of the most primitive of siphonostomatoid families, consists currently of 117 species in 21 genera. Most of these species (65%) are poorly or incompletely described since they have been rarely recorded in recent decades and, when encountered, have been found in very low numbers. During the 19th Italian Antarctic Expedition, with the RV Italica, to the Ross Sea in austral summer 2004, some artotrogid copepods were collected. This paper redescribes two species of artotrogid copepods, which are known only from the Southern Ocean, Neobradypontius neglectus and Cryptopontiuslatus, and describes for the first time a male of the genus Neobradypontius. Furthermore, a new species is described and added to Sestropontius, increasing the number of known species of this genus to three. The main discrepancies between the original descriptions and the specimens of the two species collected from the Ross Sea redescribed here were on the armature of the antennary exopod and leg 5. The new species, Sestropontius italicae, shares with its most similar congener, S. mckinnoni, the armature of the third endopodal segment of leg 1 and leg 2 and that of the third exopodal segment of leg 4. However, the segmentation of the antennae and the armature on the antennary exopod are different.

Keywords: Antarctica; Artotrogidae; redescription; Neobradypontius; Sestropontius; Cryptopontius

To access larger versions of Figs. 2–12 please see the supplementary file in the column to the right (under Article Tools)

(Published: 8 December 2014)

Citation: Polar Research 2014, 33, 24135, http://dx.doi.org/10.3402/polar.v33.24135

Downloads

Download data is not yet available.

Author Biography

Mercedes Conradi, University of Sevilla

Zoology Department

FAculty of Biology

Published
2014-12-08
How to Cite
Conradi, M. (2014). Three artotrogids (Crustacea: Copepoda: Siphonostomatoida) from the Ross Sea, Antarctica. Polar Research, 33. https://doi.org/10.3402/polar.v33.24135
Section
Research/review articles