Pherecardites antarctica Bleeker & Harris & Ten & Hove & Salazar-Vallejo 2023, n. comb.
Pherecardites antarctica (Hartman, 1976) n. comb. (Fig. 2) Branchamphinome antarctica Hartman, 1967: 42, pl. 12, fig. A (anterior end). — Kudenov 1993: 95, figs 1, 2 (redescr.). TYPE MATERIAL. — Antarctica. Not seen (examined and redescribed by Kudenov 1993). ADDITIONAL MATERIAL. — Antarctica • 1 sp...
| Main Authors: | , , , |
|---|---|
| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://zenodo.org/record/8183871 https://doi.org/10.5281/zenodo.8183871 |
| Summary: | Pherecardites antarctica (Hartman, 1976) n. comb. (Fig. 2) Branchamphinome antarctica Hartman, 1967: 42, pl. 12, fig. A (anterior end). — Kudenov 1993: 95, figs 1, 2 (redescr.). TYPE MATERIAL. — Antarctica. Not seen (examined and redescribed by Kudenov 1993). ADDITIONAL MATERIAL. — Antarctica • 1 specimen; RV Eltanin; Sta. 1346; 54°49’ to 54°50’S, 129°48’ to 129°46’W; 549 m depth; 7.XI.1964; LACM. DISTRIBUTION. — Antarctic, in sediments at 333-1153 m water depth. OBSERVATIONS Non-type specimen (LACM, only one available) colorless, complete, oval (Fig. 2A), slightly bent ventrally, pharynx partially exposed (Fig. 2C). Body 8 mm long, 3.5 mm wide, 26 chaetigers. Prostomium (Fig. 2B) distorted due to eversion of pharynx, bent posteriorly; lateral antennae eroded, inserted ahead of anterior eyes; median antenna thin, tapered, longer than caruncle. Palps conical, directed laterally. Eyes dark brown, anterior and posterior eyes fused laterally; anterior eyes reniform, twice as large as posterior round eyes. Caruncle distorted, with a median ridge and 3-4 lateral digitate lobes directed posteriorly. Branchiae with digitate filaments from chaetiger 1, with about 10 filaments along anterior chaetigers, becoming less abundant medially and posteriorly, continued to last chaetigers (Fig. 2D). Pharynx with a short smooth basal ring, and a longer distal ring; a middorsal ridge visible in the aperture. Posterior end tapered; pygidium with anus terminal, anal plate round, without cirri. REMARKS Hartman (1967, pl. 12, fig. A) only included a schematic illustration of the anterior end. Her figure shows the lateral antennae are ahead of the anterior eyes, the median antenna is inserted behind the posterior eyes, and palps are directed laterally and inserted ahead of lateral antennae. The caruncle includes a median, longer ridge with six lateral lobes, with the proximal ones apparently arising from the posterior prostomial margin.The eyes were depicted as circular, slightly separate from each other, and the anterior eyes slightly ... |
|---|