Sertularella mixta Galea & Schories, 2012a

Horia R. Galea, Dirk Schories, Verena Häussermann & Günter Försterra, 2017, Taxonomic revision of the genus Sertularella (Cnidaria: Hydrozoa) from southern South America and the subantarctic, with descriptions of five new species, Revue suisse de Zoologie 124 (2), pp. 255-321: 292

publication ID

10.5281/zenodo.893519

persistent identifier

http://treatment.plazi.org/id/682DE627-FFFB-FF87-FF1C-6E34FA7DFCEA

treatment provided by

Plazi

scientific name

Sertularella mixta Galea & Schories, 2012a
status

 

Sertularella mixta Galea & Schories, 2012a 

Fig. 14H, I; Table 18

Sertularella mixta Galea & Schories, 2012a: 42  , fig. 5A-G.

Sertularella sanmatiasensis  . – Galea et al., 2009: 12, fig. 3C-E [non Sertularella sanmatiasensis El Beshbeeshy, 2011  ].

Sertularella ellisii  f. lagenoides  . – Leloup, 1974: 28, fig. 22 [non Sertularella ellisii ( Milne-Edwards, 1836)  ; non S. lagenoides Stechow, 1919  ].

Sertularella peregrina  . – Leloup, 1974: 31, fig. 25 [non Sertu- larella peregrina Bale, 1926  ].

Material examined: MHNG-INVE-79667; Chile, Región de Coquimbo, Punta Choros, Bajo Tiburon, -29.2551° -71.5265°, 17 m, coll. D. Schories, lot DS206; 01.11.2009; colony composed of numerous fertile and sterile stems (holotype). – HRG-0642; Chile, Región de los Ríos, north of Corral, Chaihuin, -39.95730° -73.60245°, 6-12 m, coll. D. Schories; 08.10.2012; four male stems 2.3-3.4 cm high. – HRG- 0646; Chile, Región de los Ríos, north of Corral, Chaihuin, -39.95730° -73.60245°, 6-12 m, coll. D. Schories; 16.11.2011; female colony composed of numerous stems up to 2.5 cm high. – HRG-0332; Chile, Región de los Lagos, southern Chiloé, Punta Inio, -43.39300° -74.11769°, 15.6 m, coll. HSFS, HF6, lot A128; 22.02.2008; two female stems, 1.5 and 2.2 cm high.

Description: Colonies arising from creeping, branching, anastomosing hydrorhiza. Stems short, up to 2.8 cm high, monosiphonic, unbranched or sparinglybranched in one plane; basal part of varied length, though generally short, with a few twists above origin from stolon; remainder of stem composed of numerous short, almost collinear, hydrothecate internodes; the latter delimited by oblique nodes sloping in alternate directions. Side branches, when present, borne on short stem apophyses arising from below the bases of stem hydrothecae; occasionally, branches given off from within the hydrothecae; the latter tubular, slightly swollen basally, especially on adaxial side; adnate for about half their length to the corresponding internode; abaxial wall straight to slightly concave basally; aperture mounted on short neck region, expanding at rim; abcauline cusp slightly longer than the three others, though all relatively short, and separated by shallow, rounded embayments; three internal, submarginal perisarc projections (2 latero-adaxial, 1 abaxial). Gonothecae arising from below the hydrothecal bases; ovoid, with several transverse ridges in upper half, much attenuated to absent in lower half; aperture mounted on short, quadrangular neck region, carrying four blunt projections of perisarc.

Dimensions: See Table 18.

Remarks: The gonothecae of this species are illustrated by both Galea et al. (2009, fig. 3E, as S. sanmatiasensis  ) and Galea & Schories (2012a, fig. 5F).

Distribution: Chile – Región de Coquimbo [Península de Coquimbo ( Leloup, 1974, as S. ellisii  f. lagenoides  ); vicinity of Punta de Choros ( Galea & Schories, 2012a)]; Región de Bío-Bío [Bahía de Lota, Golfo de Arauco ( Leloup, 1974, as S. ellisii  f. lagenoides  )]; Región de los Ríos [vicinity of Corral (present study)]; Región de los Lagos [south of Isla Grande de Chiloé ( Galea et al., 2009, as S. sanmatiasensis  )]; Región de Aysén [Guaitecas Archipelago ( Leloup, 1974, as S. peregrina  )].

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Sertulariidae

Genus

Sertularella

Loc

Sertularella mixta Galea & Schories, 2012a

Horia R. Galea, Dirk Schories, Verena Häussermann & Günter Försterra 2017

2017
Loc

Sertularella mixta

Galea & Schories 2012: 42

2012
Loc

Sertularella sanmatiasensis

El Beshbeeshy 2011

2011
Loc

Sertularella sanmatiasensis

El Beshbeeshy 2011

2011
Loc

Sertularella peregrina

Bale 1926

1926
Loc

peregrina

Bale 1926

1926
Loc

lagenoides

Stechow 1919

1919
Loc

S. lagenoides

Stechow 1919

1919
Loc

Sertularella ellisii (

Milne-Edwards 1836

1836