The non-Siphonophoran Hydrozoa (Cnidaria) of Salento, Italy with notes on their life-cycles: an illustrated guide Author Gravili, Cinzia Author Vito, Doris De Author Camillo, Cristina Gioia Di Author Martell, Luis Author Piraino, Stefano Author Boero, Ferdinando text Zootaxa 2015 3908 1 1 187 journal article 42365 10.11646/zootaxa.3908.1.1 6f1d1977-6b97-4789-828c-76ed250cf1ae 1175-5326 242729 D6AD2B49-170B-4D9C-84AA-DBE0FEEAD8BE Pachycordyle pusilla ( Motz-Kossowska, 1905 ) Fig. 7 A, B See Schuchert (2004) for a complete synonymy. Material examined. HCUS-S 0 0 7 (Hydrozoa Collection, University of Salento—fauna of the Salento Peninsula). Description (based on our own observations; Motz-Kossowska 1905 ; Schuchert 2004 ): Hydroid. Hydrorhiza as creeping, smooth, mostly linear stolons; colonies mostly stolonal, up to 2 mm ; hydrocaulus as hydranth pedicel, unbranched or rarely branched once, with thick, double-layered and basally annulated perisarc, widening distally into a shallow funnel; hydranth slightly club-shaped when fully relaxed, 0.7–1.2 mm long; hypostome high, dome-shaped; with 12–16 filiform tentacles scattered through distal half or in 3 whorls. Gonophores as fixed sporosacs, ovoid to elongated, covered by loose, thin periderm, fixed sporosacs, borne distally on hydranth pedicels, 1–4 per pedicel; without radial or circular canals; no velum; simple spadix present, proximal gastrodermal chamber large. Females with 4, occasionally 5, eggs in a single tier. Colours: eggs uncoloured, clear. Cnidome. desmonemes and microbasic euryteles. Habitat type . Phanerogames in sea water of normal salinity (depth range: 0–30 m ) ( Boero & Fresi 1986 ; Schuchert 2004 ; Puce et al. 2009). Substrate. Phanerogames ( Posidonia oceanica and Zostera leaves, Cymodocea nodosa ), algae, concretions. Seasonality. March, April, August, October, December ( Boero & Fresi 1986 ); January (Puce et al. 2009) in the Ligurian Sea. Reproductive period. Along the Mediterranean French coast ( Motz-Kossowska 1905 ) reproductive colonies occur in August and May ( Schuchert 2004 ), October in the Ligurian Sea ( Boero & Fresi 1986 ), Distribution. Endemic to the Mediterranean ( Morri 1980a as C. pusilla ; Medel & López-González 1996 ; Bouillon et al. 2004; Schuchert 2004 ; Gravili et al. 2008a ). Records in Salento. Rare at Otranto (this study). Remarks. Schuchert (2004) used the new combination Pachycordyle pusilla ( Motz-Kossowska, 1905 ) . Reproduction, in this species, leads to reduction of hydranths ( Leloup 1930 ). References. Motz-Kossowska (1905) as Cordylophora pusilla ; Leloup (1930) , Picard & Roch (1949) both as Tubiclava pusilla ; Picard (1958a) , Boero (1981a) , Medel & López-González (1996) all as Cordylophora pusilla ; Schuchert (2004) as Pachycordyle pusilla ( Motz-Kossowska, 1905 ) comb. nov. ; Gravili (2006), Gravili et al. (2008a) , Puce et al . (2009).