Geminofilum garciaalvarezi
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Ordo: Phyllodocida
Familia: Sphaerodoridae
Genus: Geminofilum
Name
Geminofilum garciaalvarezi (Moreira, Cacabelos & Troncoso, 2004) comb. n. – Wikispecies link – Pensoft Profile
- Sphaerodoropsis garciaalvarezi Moreira, Cacabelos & Troncoso, 2004: 995–999, figs 1–3, 4A, D.
Type locality
Ensenada de Baiona, NW Iberian Peninsula, 42°08.83'N, 8°50.25'W, 7 m.
Material examined
(2 specs) NW Spain: MNCN 16.01/18460 (2 specs, on SEM stub), Ría de Ferrol, 08°14.37'N, 43°27.88'W, 15 m, 19 Jul 2010.
Diagnosis
Body short and cylindrical, up to 2.5 mm long. Head appendages short, smooth, lacking spurs or basal papillae. Median antenna shorter than lateral antennae and palps. Antenniform papillae absent. Dorsal macrotubercles sessile, almost spherical, arranged in two transverse rows per segment, with six and seven macrotubercles each in midbody segments. Additional five papillae, hemispherical and small, per segment. Ventrum with six papillae per segment, hemispherical and small, arranged in a V-shape. Parapodia with one papilla on anterior surface. Acicular lobe from chaetiger 2, digitiform. Ventral cirri digitiform reaching acicular lobe tip. Compound chaetae (3–6) with short blades (up to five times as long as wide); all similar. Females with large tubercle near ventral edge of parapodia of chaetiger 6 and inflated ventral cirri of chaetigers 4–7. Males with a pair of oval tubercles, ventral cirri of chaetiger 6 also basally inflated.
Remarks
The recent description of this species is complete and re-examination of material, even under the SEM did not provide further information about morphological features. Range of variation among chaetae of different specimens and segments show moderate variation and all studied blades range between 3–5 times as long as wide, are unidentate, and finely serrated (Fig. 13G–I). Geminofilumgarciaalvarezi comb. n. is similar to G.bisphaeroserialis (Hartmann-Schröder, 1974), comb. n. (South Africa), G.arctowskyensis (Hartmann-Schröder & Rosenfeldt, 1988), comb. n. (Antarctica), and G.halldori (Moreira & Parapar, 2012), comb. n. (Iceland) but they can be distinguished according to the number and arrangement of ventral papillae (Moreira et al. 2004[1], Moreira and Parapar 2012[2]).
Distribution
NW Iberian Peninsula (Moreira et al. 2004[1], Cacabelos et al. 2008[3]).
Habitat
From gravel to muddy sand and sandy mud and seagrass (Zosteramarina L.), 7–28 m depth (Moreira et al. 2004[1], Cacabelos et al. 2008[3]).
Taxon Treatment
- Capa, M; Nygren, A; Parapar, J; Bakken, T; Meißner, K; Moreira, J; 2019: Systematic re-structure and new species of Sphaerodoridae (Annelida) after morphological revision and molecular phylogenetic analyses of the North East Atlantic fauna ZooKeys, 845: 1-97. doi
Images
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Other References
- ↑ 1.0 1.1 1.2 Moreira J, Cacabelos E, Troncoso J (2004) A new species of Sphaerodoropsis (Polychaeta: Sphaerodoridae) from north-east Atlantic, with comments on other species of the genus.Journal of the Marine Biological Association of the United Kingdom84: 95–1000. https://doi.org/10.1017/s002531540401029xh
- ↑ Moreira J, Parapar J (2012) Two new species of Sphaerodoropsis Hartman & Fauchald, 1971 (Polychaeta: Sphaerodoridae) from Iceland (BIOICE programme).Marine Biology Research8: 584–593. https://doi.org/10.1080/17451000.2011.638929
- ↑ 3.0 3.1 Cacabelos E, Moreira J, Troncoso J (2008) Distribution of Polychaeta in soft-bottoms of a Galician ria (NW Spain).Scientia Marina72: 655–667. https://doi.org/10.3989/scimar.2008.72n4655
