Sertularia perpusilla Stechow 1919
Creators: name: Gravili, Cinzia
name: Vito, Doris De
name: Camillo, Cristina Gioia Di
name: Martell, Luis
name: Piraino, Stefano
name: Boero, Ferdinando
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Sertulariidae
Sertularia
Sertularia perpusilla

description: Sertularia perpusilla Stechow, 1919
Fig. 97 A, B
See Peña Cantero & García Carrascosa (2002) for a complete synonymy.
Material examined. HCUS-S 104 (Hydrozoa Collection, University of Salento—fauna of the Salento Peninsula).
Description (based on our own observations; Boero 1981a; Gili 1986):
Hydroid. Hydrorhiza stolonal, colonies erect; hydrocaulus up to ca 7 mm, usually unbranched, internodes thecate excepting basal parts, separated by distinct or indistinct oblique nodes; hydrothecae opposite, touching frontally, tubular and curved outwards, forming 80º–90º angle with the axis, adcauline wall 1/2 adnate to the axis, margin with 3 cusps, 2 laterals and one abcauline, operculum with 2 valves. Gonothecae elongated-ovoid, with transverse ribs and 4 small apical cusps.
Cnidome. Microbasic mastigophores.
Habitat type. Littoral from 1 to about 70 m depth (Boero 1981a; Boero & Fresi 1986; Roca 1986).
Substrate. This species is an exclusive epibiont of Posidonia oceanica.
Seasonality. Present all year (Boero & Fresi 1986), April (Moura 2011; this study), May (Giovannetti et al. 2010), August (Bianchi et al. 1993a; Galea 2007), and September (Bianchi et al. 1993a; Galea 2007; Giovannetti et al. 2010) in several localities of the Mediterranean Sea.
Reproductive period. March (Stechow 1919), June (Stechow 1919; Rossi 1950), July (Broch 1933; Gili 1986), August (Stechow 1919; Broch 1933; Peña Cantero & García Carrascosa 2002), and September (Boero & Fresi 1986) in several localities of the Mediterranean Sea.
Distribution. Endemic to Mediterranean (Marinopoulos 1979; Medel & López-González 1996; Peña Cantero & García Carrascosa 2002; Bouillon et al. 2004; Soto Ãngel & Peña Cantero 2013).
Records in Salento. Rare at Otranto (Gravili 2006; Gravili et al. 2008a).
Remarks. For more details about the ecology of this species see Peña Cantero & García Carrascosa (2002).
References. Babic (1910) as S. mediterranea; Stechow (1919); Broch (1933), Billard (1936), Picard & Roch (1949), Picard (1952), Rossi (1971), Marinopoulos (1979), Boero (1981a, b), Fresi et al. (1982), Boero et al. (1985), Boero & Fresi (1986), Gili (1986), García-Rubies (1987, 1992), Roca (1987), Piraino & Morri (1990), Hughes et al. (1991), Morri et al. (1991), Roca et al. (1991), Medel & López-González (1996), Piraino et al. (1999), Peña Cantero & García Carrascosa (2002), Bedini et al. (2003), Bouillon et al. (2004), Gravili (2006), Galea (2007), Gravili et al. (2008a), Giovannetti et al. (2010), Moura (2011).
description: Published as part of Gravili, Cinzia, Vito, Doris De, Camillo, Cristina Gioia Di, Martell, Luis, Piraino, Stefano & Boero, Ferdinando, 2015, The non-Siphonophoran Hydrozoa (Cnidaria) of Salento, Italy with notes on their life-cycles: an illustrated guide, pp. 1-187 in Zootaxa 3908 (1) on page 136, DOI: 10.11646/zootaxa.3908.1.1, http://zenodo.org/record/242729