Pherecardites parva Horst 1912
- 1. Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden (The Netherlands)
- 2. Natural History Museum of Los Angeles County, 900 Exposition Blvd., Los Angeles, California, 90007 (United States)
- 3. Depto. Sistemática y Ecología Acuática, El Colegio de la Frontera Sur, Chetumal, Q. Roo (México)
Description
Pherecardites parva Horst, 1912
(Fig. 1)
Pherecardites parva Horst, 1912: 33, pl. 9, figs 17-19. — Bleeker & van der Spoel 1992: 152 (lectotype designation).
TYPE MATERIAL. — Indonesia. Lectotype • 1 specimen; RV Siboga; Sta. 122; 01°58.5’N, 125°0.5’E; 1264- 1165 m depth; 17.VII.1899; ZMA V.Pol 1072.1.g.
PARALECTOTYPES. — Indonesia • 1 specimen; RV Siboga; Sta. 139; 00°11’S, 127°25’E; 397 m depth; 4.VIII.1899; ZMA V.Pol. 1072.2 • 1 specimen; RV Siboga; Sta. 173; 03°27’S, 131°0.5’E; 567 m depth; 28.VIII.1889; ZMA V.Pol. 1072.3.
DISTRIBUTION. — Indonesia, in sediments at 397-1264 m water depth.
OBSERVATIONS
Lectotype (ZMA V.Pol 1072.1) colorless, without posterior region, bent ventrally, breaking in two (Fig. 1A). Body about 10 mm long, 2.5 mm wide, 30 chaetigers. Prostomium (Fig. 1B) slightly eroded, left lateral antenna lost, right one present, inserted close to median antennal base. Median antenna thick, bent laterally, without tip. 2/3 as long as caruncle. Palps lost. Eyes not seen. Caruncle straight, with a median ridge and 4 digitate lateral lobes, directed posteriorly. Branchiae from chaetiger 1 lost; chaetiger 2 with 2 digitate filaments, in anterior chaetigers branchiae with about 5 filaments. Pharynx not exposed (Fig. 1C). Posterior end lost; pygidial features unknown.
REMARKS
Horst (1912: 33) did not see eyes in his specimens (longest one slightly more than 7 mm in length) but noted some black spots. Kudenov (1993: 96-97) noted in P. antarctica (Hartman, 1967) n. comb., specimens of different size (8-12 mm long) had eyes well developed and their pigments were retained despite being in ethanol for over 30 years, whereas in P. parva eyes were not seen. Horst (1912: 33) characterized the caruncle in the diagnosis for Pherecardites, and in the description of P. parva, as having a median ridge and lateral lamellae, directed posteriorly, extended along three segments. Branchiae were noted as starting in chaetiger 1 but the number of filaments was not given. Likewise, the presence of branchiae along posterior chaetigers was not indicated, nor the shape of the posterior end.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- ZMA
- Event date
- 1889-08-28 , 1899-07-17 , 1899-08-04
- Family
- Amphinomidae
- Genus
- Pherecardites
- Kingdom
- Animalia
- Order
- Amphinomida
- Phylum
- Annelida
- Scientific name authorship
- Horst
- Species
- parva
- Taxon rank
- species
- Type status
- lectotype , paralectotype
- Verbatim event date
- 1889-08-28 , 1899-07-17 , 1899-08-04
- Taxonomic concept label
- Pherecardites parva Horst, 1912 sec. Bleeker, Harris, Hove & Salazar-Vallejo, 2023
References
- HORST R. 1912. - Polychaeta errantia of the Siboga Expedition. Part 1, Amphinomidae. Siboga-Expeditie Uitkomsten op Zoologisch, Botanisch, Oceanographisch en Geologisch gebied verzameld in Nederlandsch Oost-Indie 1899 - 1900 24 a: 1 - 43, 10 Pls. https: // biodiversitylibrary. org / page / 2187401
- BLEEKER J. & VAN DER SPOEL S. 1992. - Catalogue of the Polychaeta collected by the Siboga Expedition and type specimens of Polychaeta in the Zoological Museum of Amsterdam. Bulletin Zoologisch Museum, Universiteit van Amsterdam 13 (13): 121 - 166. https: // repository. naturalis. nl / pub / 505308
- KUDENOV J. D. 1993. - Amphinomidae and Euphrosinidae (Annelida: Polychaeta) principally from Antarctica, the Southern Ocean, and Subantarctic regions. Biology of the Antarctic Seas 22, Antarctic Research Series 58: 93 - 150.
- HARTMAN O. 1967. - Polychaetous annelids collected by the USNS Eltanin and Staten Island cruises, chiefly from Antarctic Seas. Allan Hancock Monographs in Marine Biology 2: 1 - 387.