Belonectes

Malyutina, Marina V. & Brandt, Angelika, 2009, Description of three new species of the deep-sea munnopsid genus Belonectes (Crustacea, Isopoda, Asellota) from the Weddell Sea, Southern Ocean, Zootaxa 2277, pp. 33-52 : 35

Key to the species of Belonectes

1. Width of fused middle part between pereonites 5 and 6 less than 0.5 of pereonite 5 width ....................................... 2

- Width of fused middle part between pereonites 5 and 6 more than 0.5 of pereonite 5 width .................................... 4

2. Article 1 of antennula enlarged, almost reaching to distal margin of rostrum, distomedial lobes of male pleopod 1 shorter than distolateral lobes, medial margin of maxilliped palp article 3 rounded ...................... B. daytoni sp. nov.

- Article 1 of antennula reaching no further than 0.7 rostrum length, distomedial lobes of male pleopod 1 longer than distolateral lobes, medial margin of maxilliped palp article 3 somewhat angled ......................................................... 3

3. Body cuticle with fingerprint pattern, medial lobe of maxilliped palp article 4 broad, width 2.4 article 5 width, distomedial lobes of male pleopod 1 narrow, rounded, distolateral part of male pleopod 2 protopod enlarged, bent dorsally forming ventral keel ............................................................................................................ B. stoddarti sp. nov.

- Body cuticle smooth, medial lobe of maxilliped palp article 4 elongate, width 1.3 article 5 width, distomedial lobes of male pleopod 1 broad, triangular, male pleopod 2 protopod not bent dorsally forming a ventral keel ..................... ......................................................................................................................................................... B. grasslei sp. nov.

4. Pleotelson rounded terminally, distomedial lobes of male pleopod 1 truncate .............................................. B. parvus

- Pleotelson truncated terminally, distal lobes of male pleopod 1 rounded ................................................... B. latifrons