Sertularella recta Horia R. Galea & Dirk Schories & Verena Häussermann & Günter Försterra 2017, sp. nov.

• Main Authors: Horia R. Galea, Dirk Schories, Verena Häussermann, Günter Försterra
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Sertulariidae; Sertularella; Sertularella recta; Argentine; Magallanes; Recta; Faro; Antártica
• Online Access: https://zenodo.org/record/6029761; https://doi.org/10.5281/zenodo.6029761

Sertularella recta Galea & Schories, sp. nov. Fig. 15 I-M; Table 21 Sertularella ? implexa. – Galea & Schories, 2012a: 40, pl. 3 fig. 4F-J [non Sertularella implexa (Allman, 1888)]. Sertularella polyzonias. – Allman, 1888: 55, pl. 26, figs 3, 3A. – El Beshbeeshy, 2011: 141, fig. 45 [non Sertularella polyzonias (Linnaeus, 1758)]. Holotype material: MHNG-INVE-79627; Chile, Región de Magallanes y de la Antártica Chilena, Punta Arenas, Faro San Isidro, -53.78174° -70.97391°, 40 m, coll. D. Schories, lot #11; 05.01.2011; colony composed of several fertile stems, up to 5.5 cm high. Additional material: ZMH C11895; Argentine Shelf, no additional data; several branched and unbranched colony fragments, up to 1.5 cm high, one of which bears 3 female gonothecae. – ZMH C11888; FRV Walther Herwig, Stn. 327, -51.18333°, -56.95000°, 225 m; 29 Jun. 1966; two small, sterile colony fragments likely not belonging to the present species, although considered as conspecific by El Beshbeeshy (2011). Diagnosis: Irregularly-pinnate colonies, with monosiphonic stems branched several times; internodes moderately long, slightly geniculate; hydrothecae flaskshaped, adnate for 1/3rd their length, swollen adaxially, abaxial cusps slightly produced, rim not thickened, internal cusps absent; gonothecae broadly ovoid, transversely wrinkled, aperture surrounded by 3-4 spines. Etymology: From the Latin rectus, -a, -um (rego), meaning straight, with reference to the macroscopic appearance of both stems and branches. Description: Hydrorhiza missing, but stems above origin from stolon comprising a monosiphonic, ahydrothecate basal part of varied length, with several proximal wrinkles; remainder of stems divided into moderately-long, slightly geniculate internodes by means of oblique constrictions of the perisarc slanting in alternate directions; nodes brownish in older parts of the colony, becoming transparent in younger ones. Branching pattern irregular, with side branches arising every 1-8 stem hydrothecae, immediately below their bases, ...