Corhiza pauciarmata Ansín Agís et al., 2009, Ansin Agis, 2009

Galea, Horia R. & Maggioni, Davide, 2020, Plumularioid hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program, European Journal of Taxonomy 708, pp. 1-58: 34

publication ID

https://doi.org/10.5852/ejt.2020.708

publication LSID

lsid:zoobank.org:pub:DDF28821-1A4A-4457-BB53-1696F3BFB7B2

DOI

http://doi.org/10.5281/zenodo.4335884

persistent identifier

http://treatment.plazi.org/id/03D92045-FFA9-FFD6-E61C-21DDC4E8F81C

treatment provided by

Valdenar

scientific name

Corhiza pauciarmata Ansín Agís et al., 2009
status

 

Corhiza pauciarmata Ansín Agís et al., 2009  

Figs 11D View Fig , 14 View Fig E–J; Table 7

Corhiza pauciarmata Ansín Agís et al., 2009: 56   View Cited Treatment , fig. 11.

Material examined

PACIFIC OCEAN • 2 sterile colonies, 6 and 9 cm high, respectively, with only remains of hydrorhiza; off New Caledonia, stn DW4741; 22°52′ S, 167°41′ E; 210– 210 m; 23 Aug. 2016; KANACONO leg.; barcode identifier MT655153 View Materials ; MNHN-IK-2015-604 GoogleMaps   .

Description

Colonies upright, up to 9 cm high, with strongly fascicled stems, ca 4 mm thick basally, most probably arising from rhizoid stolons. Cladia numerous, up to 1.2 cm long, given off irregularly from component tubes of stem; transverse constriction short distance above origin; proximal part ahydrothecate, with few occasional transverse nodes or signs of breakage and subsequent regeneration, with row of frontal nematothecae, distally ending in oblique node; remainder of stem heteromerously segmented, with alternating thecate and ahydrothecate internodes, both short. Thecate internodes, up to 12 per cladium, barely accommodating a hydrotheca and its 3 associated nematothecae: a mesial one and pair of laterals; mesial nematotheca immovable, with rim of upper chamber lowered adaxially; lateral nematothecae borne on short apophyses, with globular upper chamber whose abaxial wall is deeply scooped, adopting marked sinusoid shape adaxially. Athecate internodes with two frontal nematothecae in row; upper chamber with rim distinctly emarginated on adaxial side, often sinusoid. Gonothecae absent. Cnidome composed of three types of heteronemes: 1) seed-shaped, (4.8–5.1) × (3.1–3.3) µm; 2) banana-shaped, (6.4–6.6) ×(2.5–2.6) µm; 3) elongated-ovoid, (20.9–23.1) ×(4.6–5.1) µm.

Remarks

Although the ahydrothecate internodes of cladia are comparatively shorter, no other differences could be noted with the specimens described and illustrated by Ansín Agís et al. (2009).

Distribution

Scattered records from off New Caledonia ( Ansín Agís et al. 2009; present study).

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Halopterididae

Genus

Corhiza

Loc

Corhiza pauciarmata Ansín Agís et al., 2009

Galea, Horia R. & Maggioni, Davide 2020
2020
Loc

Corhiza pauciarmata Ansín Agís et al., 2009: 56

Ansin Agis J. & Vervoort W. & Ramil F. 2009: 56
2009