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 Aglaophenia tubiformis Marktanner-Turneretscher, 1890 Fig. 56 A–D See Svoboda & Cornelius (1991) for a complete synonymy. FIGURE 56. Aglaophenia tubiformis : A , general aspect of a colony; B , basal parts of cauli; C , lateral view of hydrotheca; D , corbula (redrawn and modified: A, C after Svoboda & Cornelius 1991, D after Medel & Vervoort 1995 by C.G. Di Camillo; B after Svoboda & Cornelius 1991 by A. Gennari). Scale bars: A, 10 mm; C, 0.5 mm; D, 1.0 mm. Material examined. HCUS-S 0 63 (Hydrozoa Collection, University of Salento—fauna of the Salento Peninsula). Description (based on our own observations; Svoboda 1979 ; Svoboda & Cornelius 1991 ): Hydroid. Hydrorhiza as a dense, anastomosing network when on flat surface but more elongated when on algal substrate; colonies erect; hydrocauli monosiphonic, up to 150 mm , unbranched or dichotomously branched, coenosarc filled with zooxanthellae, axis basally without thecae, with several transverse nodes, followed by one (rarely 2) prosegment separated by oblique nodes, remaining internodes each with 3 nematothecae and a pseudonematotheca hydrocladia alternate, divided into cormidia by transverse nodes, cormidia composed of one hydrotheca and 3 nematothecae; hydrotheca deep (length/breadth at rim: 1.4–2); rim with 9 more or less equal cusps; intrathecal adcauline septum moderately developed; mesial nematotheca arising between the middle and upper third of hydrotheca, free portion of variable length, lateral nematothecae reaching or overtopping the hydrothecal rim, nemathotheca with a gutter shaped aperture; corbulae comprising 4–8 pairs of ribs, with the first one free, male with slits between ribs, female with almost completely fused ribs, colonies dioecious. Colours: hydrocauli and hydrocladia yellowish to brown, corbulae brown. Cnidome. Microbasic mastigophores. Habitat type . Algal sublitoral rocky (depth range: 0–40 m ) ( Boero & Fresi 1986 ; Svoboda & Cornelius 1991 ). Substrate. Preferentially settling on algae, sponges, bryozoans, barnacles. Seasonality. From January to December ( Boero & Fresi 1986 ; De Vito 2006; Galea 2007 ; Puce et al. 2009; this study). Reproductive period. February–October ( Boero & Fresi 1986 ; Peña Cantero & García Carrascosa 2002 ; Galea 2007 ; Puce et al. 2009); all year (De Vito 2006; this study). Distribution. Northeastern Atlantic, Mediterranean ( Svoboda 1979 ; Svoboda & Cornelius 1991 ; Ramil & Vervoort 1992; Medel & López-González 1996 ; Peña Cantero & García Carrascosa 2002 ; Bouillon et al. 2004; Galea 2007 ; Gravili et al. 2008a ; Puce et al. 2009; Soto Ãngel & Peña Cantero 2013 ). Records in Salento. Common at: La Strea, Porto Cesareo ( Presicce 1991 ; Faucci & Boero 2000 ): Torre dell'Inserraglio, S.ta Caterina, Montagna Spaccata, Torre Vado, Ponte del Ciolo ( Presicce 1991 ); Costa Merlata, Otranto ( Fraschetti et al . 2002 ); ( Presicce 1991 ); Otranto ( Stabili et al. 2008 ; De Vito 2006; Gravili 2006; Gravili et al. 2008a ; this study). Other Apulian records: Gargano ( Fraschetti et al . 2002 ). Remarks. This species contains intracellular zooxanthellae of the species Symbiodinium microadriaticum in all endodermal tissues, including eggs and developing planulae; their role in nutrition was described by Svoboda (1981). References. Broch (1933) as A. pluma f. typica , A. dichotoma f. gracilis , and A. elongata , in part; Morri (1979c) , Svoboda (1979) , Morri (1980b) , Svoboda & Cornelius (1991) , Boero & Fresi (1986) , Ramil & Vervoort (1992), Medel & Vervoort (1995) , Morri & Bianchi (1999), Piraino et al. (1999) , Faucci & Boero (2000) , Fraschetti et al . (2002) , Peña Cantero & García Carrascosa (2002) , Bouillon et al. (2004), De Vito (2006), Gravili (2006), Galea (2007) , Gravili et al. (2008a) , Puce et al . (2009).