New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific Author Bastida-Zavala, J. Rolando Author Buelna, Alondra Sofía Rodríguez Author León-González, Jesús Angel De Author Camacho-Cruz, Karla Andrea Author Carmona, Isabel text Zootaxa 2016 4184 3 401 457 journal article 10.11646/zootaxa.4184.3.1 4d1b5b33-2741-4f58-b920-d3c8f6abbbff 1175-5326 255062 3DD2861B-C3E9-474A-B442-A2BFEBB1AE9D Spirobranchus incrassatus Krøyer [in] Mörch, 1863 ( Figures 8 , 13 G) Spirobranchus incrassatus Krøyer [in] Mörch, 1863 : 405 , pl. 11, Figs 21–23. Type locality: Pacific of Colombia, on Margaritifera sp. (now Pinctada sp.). Spirobranchus incrassatus .— Ehlers 1887 : 294–295, pl. 57, Fig. 16; pl. 58, Fig. 1–5 (Acapulco, Guerrero); Bush 1905 : 236, pl. 34, fig. 24, pl. 37, Figs 25, 34 (Gulf of California, on Margaritifera sp., now Pinctada sp.); Rioja 1941b : 738 (Acapulco, Guerrero, on rocks); Steinbeck & Ricketts 1941 : 367–369 (Cabo San Lucas, Baja California Sur; encrusting on rocks); Rioja 1942 : 132–133, Figs 22–31 (Acapulco, Guerrero; description of juvenile specimens); Rioja 1947a : 216 (Topolobampo, Sinaloa, on rocks and shells); Salazar-Vallejo 1989b : 200 (Mexican coasts, checklist); Gómez et al . 1997 : 1071 (Puerto Ángel Beach, Tangolunda Beach and Cacaluta Beach, Oaxaca, on rocks and coral); Fiege & ten Hove 1999 : 362–363, Fig. 4 ( Spirobranchus incrassatus as part of S. giganteus complex sensu stricto ); Salazar-Vallejo & Londoño- Mesa 2004: 56 (Tropical Eastern Pacific, checklist); Bastida-Zavala 2008: 49, Figs 12 C-E (Baja California Sur, Sinaloa, Colima, Guerrero and Oaxaca; 4–17 m ); Bastida-Zavala 2009: 542, Fig. 4 F (identification key for Tropical America); ten Hove & Kupriyanova 2009 : 98 (worldwide serpulid checklist); Bastida-Zavala et al . 2013 : 349 (Oaxaca, checklist); Morales de Anda et al . 2014 : 126 (Navidad Bay, Jalisco); Villalobos-Guerrero et al . 2014: 107 (Sinaloa, checklist). Spirobranchus giganteus (not Pallas , 1766 ).— Monro 1933b : 1080 ( Taboga Island and Perlas Islands , Panamá ; Gorgona Island , Colombia ; Santiago [ James ], Floreana [ Charles ] and Isabela [ Albemarle ] Islands , Galápagos , on pier floats, coral, shorepools in lava, fine gravel in pools; 0–7 m ) ; Rioja 1963 : 220 (Mazatlán, Sinaloa ; Zihuatanejo, Guerrero ; and Ballena Island , Baja California Sur ) ; ten Hove 1970: 16–18, Figs 46–47, 58–59, 61–62 (synonymized several records of S. incrassatus from the Tropical Eastern Pacific); Kudenov 1980 : 123 ( Cabo Pulmo Reef, Baja California Sur ) ; Salazar-Vallejo 1989b : 200 ( Mexican coasts, checklist); Bastida-Zavala 1995 : 25–26 ( Cabo Pulmo Reef , Baja California Sur , on coral; 4–17 m ); López-García et al . 1997 : 66 ( Coiba Island , Panamá , on live corals as Porites lobata Dana ); Gotshall 1998 : 91, Fig. 26 (field guide of the Gulf of California ) ; Salazar-Vallejo & Londoño-Mesa 2004 : 56 (Tropical Eastern Pacific, checklist); Kerstitch & Bertsch 2007 : 38, Fig. 62 (field guide of the Gulf of California ) ; Villalobos-Guerrero et al . 2014: 107 ( Sinaloa , checklist). Spirobranchus giganteus corniculatus (not Grube, 1862 ).— Hernández-Alcántara et al . 2003 : 9 (Socorro Island; Ballena Island and Espíritu Santo Island, Baja California Sur, checklist); Salazar-Vallejo & Londoño-Mesa 2004 : 56 (Tropical Eastern Pacific, checklist). Spirobranchus spinosus (not Moore, 1923 ).— Salcedo-Martínez et al . 1988 : 84 (Zihuatanejo, Guerrero ; 2–9 m ); Rodríguez Cajiga 1993 : 502 (Barra de Navidad, Jalisco ). Material examined. 18 specimens. Baja California Sur : UANL 7898, 8 spec. ( Puerto Escondido , sta. 2: 25°48’53.1”N , 111°18’40.5”W , April 2, 2011 , coll. JAL & ARB ) ; UANL 7899 ( Puerto Escondido , sta. 3: 25°48’51.7”N , 111°18’41.2”W , April 2, 2011 , coll. JAL & ARB ) ; UANL 7900 ( Marina de La Paz , sta. 1: 24°09’17.7”N , 110°19’32.3”W , April 3, 2011 , coll. JAL & ARB , as Spirobranchus sp.). Oaxaca: UMAR-POLY 807, 8 spec. (Puerto Ángel, pier, May 20, 2007 , coll. FCC & SRH); UMAR-POLY 808, 3 spec. (La India Beach, Huatulco, on Spondylus calcifer [now S. limbatus ], December 3, 2005 , coll. JHB); UMAR-POLY 809 (Conejos Bay, Huatulco, June 11, 2005 , coll. JHB & GNL). Habitat. Intertidal to subtidal ( 17 m , Bastida-Zavala 1995 ). Most specimens revised here were from anthropogenic substrates in marinas and ports (from La Paz and Puerto Escondido, Baja California Sur , and from Puerto Ángel, Oaxaca ). However, previously it was found on live ( Porites lobata ) and dead coral ( Pocillopora verrucosa ), on spiny oyster Spondylus limbatus and Pinctada , on rock pools, and on pier piles (Bastida-Zavala 2008). Fouling species. Distribution. Tropical Eastern Pacific. Baja California Sur ( México ) to Panamá and Colombia (Krøyer [in] Mörch 1863 ; Ehlers 1887 ; ten Hove 1970 ; Bastida-Zavala 1995 ). Remarks. Spirobranchus incrassatus was found both in natural and anthropogenic substrates. It is a fouling species with the potential to be introduced to other tropical regions by ships. The species was confused several times with S. giganteus , a Caribbean species (see remarks in Bastida-Zavala 2008). Hernández-Alcántara et al . (2003 : 9) list Treadwell’s (1914) record of Spirobranchus quadricornis ( Grube, 1878 ) from Santa Catalina Island, Baja California Sur; however, this is a mistake, the record of Treadwell (1914) corresponds to Avalon, in Santa Catalina Island, Southern California, and the material most likely belongs to S. spinosus .