| _version_ | 1866901598678024192 |
|---|---|
| author | Souza-Canal, Jade De Valdés, Ángel |
| author_facet | Souza-Canal, Jade De Valdés, Ángel |
| contents | <p><b><i>Gymnodoris</i> sp. AB</b></p><p>(Fig. 8C–D)</p><p><b>Material examined.</b> <b>New Caledonia: North Province:</b> Koumac (20°32.9'S, 164°05.7'E), 3 m depth [Koumac 2.3 Expedition, stn. KD565], 15 Nov 2019, 1 specimen 6 mm preserved length (MNHN-IM-2019-26501, isolate JD61). <b>New Caledonia: North Province:</b> Koumac, Ilôt Double (20°28'S, 164°07.6'E), 0 m depth [Koumac 2.1 Expedition, stn. KM309, sand-mud flat with dead corals and seagrass, rocky shore with seagrass patches, lagoon with mangroves, seagrass and green algae], 17 Sep 2018, 1 specimen 6 mm preserved length (MNHN-IM-2019- 26506, isolate JD62).</p><p><b>Description</b>. Body narrow, elongate, with few, low, conical tubercles on dorsum, larger and more densely arranged on the posterior end and the notal rim (Figs. 8C–D). Velum differentiated, with several tubercles, continuing posteriorly into notal rim. Posterior end of foot tapering gradually into a blunt “tail.” Color translucent white to reddish brown on posterior end in one specimen, tubercles red with blurry edges, faint red line connecting tubercles in velum, continuing interrupted along notal rim. Some internal organs visible through body wall as brown, orange and white masses. Rhinophores conical, with 7 lamellae, clubs red antero-distally, white postero-proximally, stalks translucent white. Gill with 8 short, bipinnate, translucent white with orange pigment, opaque white bases, arranged in circle around anus opened posteriorly. Foot narrower than notum, translucent white; oral tentacles absent.</p><p><b>Phylogenetic position</b>. The phylogenetic position of <i>Gymnodoris</i> sp. AB is unresolved (Fig. 1A).</p><p><b>Remarks</b>. Very similar to the preceding species, but it possesses less dorsal tubercles and the gill circlet is not complete posteriorly. It is also similar to <i>Gymnodoris alba</i> sensu Nakano (2018) and Rudman & Darvell (1990) but lacks red lines on the branchial leaves.</p><p>Knutson & Gosliner (2022) reported this species from the Philippines, but did not provide illustrations of the live animal. The two specimens here examined were recovered as different species in the species delimitation analyses, but they are morphologically similar to each other, so they were tentatively included in the same candidate species.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_18217255 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Gymnodoris undetermined Souza-Canal, Jade De Valdés, Ángel Biodiversity Taxonomy Animalia Mollusca Gastropoda Nudibranchia Polyceridae Gymnodoris Gymnodoris undetermined <p><b><i>Gymnodoris</i> sp. AB</b></p><p>(Fig. 8C–D)</p><p><b>Material examined.</b> <b>New Caledonia: North Province:</b> Koumac (20°32.9'S, 164°05.7'E), 3 m depth [Koumac 2.3 Expedition, stn. KD565], 15 Nov 2019, 1 specimen 6 mm preserved length (MNHN-IM-2019-26501, isolate JD61). <b>New Caledonia: North Province:</b> Koumac, Ilôt Double (20°28'S, 164°07.6'E), 0 m depth [Koumac 2.1 Expedition, stn. KM309, sand-mud flat with dead corals and seagrass, rocky shore with seagrass patches, lagoon with mangroves, seagrass and green algae], 17 Sep 2018, 1 specimen 6 mm preserved length (MNHN-IM-2019- 26506, isolate JD62).</p><p><b>Description</b>. Body narrow, elongate, with few, low, conical tubercles on dorsum, larger and more densely arranged on the posterior end and the notal rim (Figs. 8C–D). Velum differentiated, with several tubercles, continuing posteriorly into notal rim. Posterior end of foot tapering gradually into a blunt “tail.” Color translucent white to reddish brown on posterior end in one specimen, tubercles red with blurry edges, faint red line connecting tubercles in velum, continuing interrupted along notal rim. Some internal organs visible through body wall as brown, orange and white masses. Rhinophores conical, with 7 lamellae, clubs red antero-distally, white postero-proximally, stalks translucent white. Gill with 8 short, bipinnate, translucent white with orange pigment, opaque white bases, arranged in circle around anus opened posteriorly. Foot narrower than notum, translucent white; oral tentacles absent.</p><p><b>Phylogenetic position</b>. The phylogenetic position of <i>Gymnodoris</i> sp. AB is unresolved (Fig. 1A).</p><p><b>Remarks</b>. Very similar to the preceding species, but it possesses less dorsal tubercles and the gill circlet is not complete posteriorly. It is also similar to <i>Gymnodoris alba</i> sensu Nakano (2018) and Rudman & Darvell (1990) but lacks red lines on the branchial leaves.</p><p>Knutson & Gosliner (2022) reported this species from the Philippines, but did not provide illustrations of the live animal. The two specimens here examined were recovered as different species in the species delimitation analyses, but they are morphologically similar to each other, so they were tentatively included in the same candidate species.</p> |
| title | Gymnodoris undetermined |
| topic | Biodiversity Taxonomy Animalia Mollusca Gastropoda Nudibranchia Polyceridae Gymnodoris Gymnodoris undetermined |
| url | https://doi.org/10.5281/zenodo.18217255 |