Antennella quadriaurita Ritchie, 1909,

Galea, Horia R., 2010, Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha, south Atlantic, Zootaxa 2336, pp. 1-18: 11

publication ID

http://doi.org/ 10.5281/zenodo.205235

persistent identifier

http://treatment.plazi.org/id/03E7237E-FFF9-4D5B-FF77-1FFFF0D6FB0F

treatment provided by

Plazi

scientific name

Antennella quadriaurita Ritchie, 1909
status

 

Antennella quadriaurita Ritchie, 1909 

( fig. 4View FIGURE 4 S)

Antennella quadriaurita Ritchie, 1909: 92  , fig. 9. – Schuchert, 1997: 29, fig. 9. – Vervoort & Watson, 2003: 344, fig. 83F –I.

Material examined. Stn. I10, 28.xi.2007: numerous sterile stems, up to 9 mm high, on sponge ( NHM 2009.24).

Remarks. The ahydrothecate segments in the present material are short and carry generally a single nematotheca, more rarely two. Following Millard (1977b), their length may vary considerably in correlation with the number of nematothecae they bear. Ritchie (1909) described 2–4 nematothecae in his type material, 3 being the most frequent number, while 1–4 are generally found upon inspection of numerous samples (Schuchert 1997).

The first pair of lateral nematothecae reaches slightly beyond the hydrothecal margin; the upper chamber is shallow, ca. 3–4 times shorter than the basal one; its adaxial wall is lowered, without cusp.

An important variation in the number and shape of the lateral nematothecae, as well as in the structure of the gonothecae was reported by Schuchert (1997), who did not exclude the involvement of a complex of species.

Distribution. The type material of this species was trawled (depth 183 m) by the S.Y. Scotia  at Gough Island (Ritchie 1909). Additional records are from the tropical West Africa, Vema Seamount, South Africa, India, New Zealand, Japan, and Korea (Vervoort & Watson 2003).

NHM

University of Nottingham

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Halopterididae

Genus

Antennella

Loc

Antennella quadriaurita Ritchie, 1909

Galea, Horia R. 2010
2010
Loc

Antennella quadriaurita

Ritchie 1909: 92
1909