Codakia paytenorum
Creators: name: Glover, Emily A.
name: Taylor, John D.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Lucinida
Lucinidae
Codakia
Codakia paytenorum

description: Codakia paytenorum (Iredale, 1937)
(Figs 14G, H; 15A)
Lentillaria paytenorum Iredale, 1937: 240, 241, pl. 16, figs 2-3.
Codakia (Codakia) paytenorum – Lamprell & Whitehead 1992: pl. 19, fig. 120.
TYPE MATERIAL. — Figured specimen not isolated from shells of L. paytenorum collected by Iredale on Lord Howe Island (AMS).
TYPE LOCALITY. — Lord Howe Island, Australia.
MATERIAL EXAMINED. — Koumac. 3 stn, 0-12 m, 2 v, 1 live.
Touho. 2 stn, 0 m, 7 v, 1 live.
Lifou. 9 stn, 0-55 m, 16 v.
Chesterfield Islands. CHALCAL/CORAIL 2, recorded from 24 stn at depths from 28- 69 m.
Other New Caledonia. LAGON, stn 161, Île Ouen, Baie du Prony, 22°34’S, 166°38’E, 2 m, 2 v. — Stn 241, 22°21’S, 167°00’E, 35 m, 1 v. — Stn 294, Grand Récif Sud, 22°44’S, 166°42’E, 21 m, 1 sh. — Stn 545, 22°52’S, 166°50’E, 37 m, 1 v. — Stn 772, secteur du Poindimie, 21°08’S, 165°41’E, 30 m, 2 v. — Stn 1139, secteur des Belep, 19°24’S, 163°47’E, 39 m, 1 v. — Stn 1140, 19°24’S, 163°44’E, 44 m, 1 v. — Stn 1156, 19°10’S, 163°13’E, 55 m, 1 v. — Stn 1157, 19°10’S, 163°10’E, 48 m, 2 v. — Stn 1196, 19°33’S, 163°21’E, 30 m, 1 v.
DISTRIBUTION. — Red Sea, Indian Ocean, West Pacific.
DESCRIPTION
Shell solid, medium to large (H to 53 mm, L to 55 mm), subcircular. Sculpture low radial ribs of variable width, narrower at anterior and posterior margins and often sparse in central part of shell. Ribs crossed by numerous fine, sometimes anastomosing, commarginal lamellae. Anterior and posterior dorsal areas raised into finely nodular sculpture. Lunule short, heart-shaped, deeply impressed, strongly asymmetrical. RV with two cardinal teeth and a large anterior lateral very close to cardinals and a vestigial posterior lateral. LV with one cardinal, an anterior lateral close to cardinal, and a low posterior lateral. Anterior adductor scar short, tapering, detached for 1/2 of length. Shell margin smooth, glossy. Colour white, umbonal areas tinged dark pink, interior shell margin deep pink to white, shell within pallial line bright yellow.
REMARKS
Iredale (1937) introduced the name Lentillaria paytenorum for shells with intensely rose-red coloured shell margins from Lord Howe Island and Queensland, distinguishing the new species from the yellow-coloured C. interrupta (Lamarck, 1818). We have examined a large number of specimens of both the yellow and pink margined “species” from the IWP and have been unable to find any consistent morphological differences to separate them. Preliminary molecular analysis (unpublished data) has revealed differences between the yellow forms similar to C. interrupta and the pink margined C. paytenorum including a sample from the type locality. For this reason we use the name C. paytenorum for the pink-margined New Caledonia samples.
description: Published as part of Glover, Emily A. & Taylor, John D., 2007, Diversity of chemosymbiotic bivalves on coral reefs: Lucinidae (Mollusca, Bivalvia) of New Caledonia and Lifou, pp. 109-181 in Zoosystema 29 (1) on page 132, DOI: 10.5281/zenodo.5392295