Pherecardites parva Horst 1912
- Dataset
- Pherecardites Horst, 1912 and Branchamphinome Hartman, 1967 are synonyms (Annelida, Amphinomidae, Amphinominae)
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Annelida
- class
- Polychaeta
- order
- Amphinomida
- family
- Amphinomidae
- genus
- Pherecardites
- species
- Pherecardites parva
description
(Fig. 1)
description
OBSERVATIONS Lectotype (ZMA V. Pol 1072.1) colorless, without posterior region, bent ventrally, breaking in two (Fig. 1 A). Body about 10 mm long, 2.5 mm wide, 30 chaetigers. Prostomium (Fig. 1 B) 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. 1 C). Posterior end lost; pygidial features unknown.
discussion
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.
distribution
DISTRIBUTION. — Indonesia, in sediments at 397 - 1264 m water depth.
materials_examined
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.
Name
- Homonyms
- Pherecardites parva Horst 1912