Mycale (Arenochalina) laxissima ( Duchassaing & Michelotti, 1864 )

Ugalde, Diana, Fernandez, Julio C. C., Gómez, Patricia, Lôbo-Hajdu, Gisele & Simões, Nuno, 2021, An update on the diversity of marine sponges in the southern Gulf of Mexico coral reefs, Zootaxa 5031 (1), pp. 1-112 : 57-58

Mycale (Arenochalina) laxissima ( Duchassaing & Michelotti, 1864)

Tables 6, 7; Figs. 52A–D , 58G

Synonymy and references: Acamas laxissima Duchassaing & Michelotti (1864: 95) , and Muricy et al. (2011: 154); Acamasina laxissima de Laubenfels (1936: 117) ; Mycale hyatti Pulitzer-Finali (1986: 128) ; Mycale jamaicaensis Pulitzer-Finali (1986: 125) ; Mycale mucifliens Pulitzer-Finali (1986: 121) ; Mycale whitfieldi Pulitzer-Finali (1986: 127) ; Hircinia cartilaginea var. horrida , Esperella nuda , Mycale angulosa , Mycale nuda , Mycale (Acamasina) laxissima , Mycale (Arenochalina) laxissima , and Thorecta horridus : see references compiled in Muricy et al. (2011: 154); Mycale laxissima: Gómez (2002: 81) , Hajdu et al. (2011: 165), and Muricy et al. (2011: 154).

Type locality. St. Thomas ( US Virgin Islands) .

Material examined. CNPGG-2416, Isla Verde reef (19.19844°N, 96.06863°W), 8 m depth, coll. Diana Ugalde, 28 August 2018 ; CNPGG-1234, Madagascar reef (21.43847°N, 90.2810°W), 12 m depth, coll. Diana Ugalde, 29 May 2012 ; CNPGG-1825, Alacranes reef (22.2701°N, 89.5412°W) 8 m depth, coll. Patricia Gómez, 10 August 2009 ; CNPGG-1829 Alacranes reef (22.386914°N, 89.6790°W), 7 m depth, coll. Diana Ugalde, 13 December 2012 ; CNPGG-2267, Triangulos Oeste reef (20.96073°N, - 92.30751°W), 20 m depth, coll. Oscar Bocardo, 10 September 2017 .

Distribution. Mexico ( Gómez & Green 1984 as M. (A.) angulosa ; current records), Bahamas, US (Florida)( Zea 1987), and Brazil ( Muricy et al. 2011).

Remarks. Up to now, Mycale (M.) laxissima has been reported in the SGoM (Veracruz and the Campeche Bank reefs; Gómez 2002, 2007, 2011) and Florida (de Laubenfels 1936, 1953; as Mycale angulosa ).

Order Polymastiida Morrow & Cárdenas, 2015

Figures

FIGURE 52. Mycale (Arenochalina) laxissima (Duchassaing & Michelotti, 1864) (CNPGG-2267), spicules: A. mycalostyles; B. mycalostyle and sigma; C–D. anisochelae. Scale bars: A = 500 µm; B–D = 100 µm.

FIGURE 58. In situ photographs of species analyzed in the present study: A. Acarnus innominatus Gray, 1867 (CNPGG-2393); B. Monanchora arbuscula (Duchassaing & Michelotti, 1864) (CNPGG-2204); C. Strongylacidon bermuda (de Laubenfels, 1950) (CNPGG-2170); D. Desmapsamma anchorata (Carter, 1882) (CNPGG-2443); E. Iotrochota arenosa Rützler, Maldonado, Piantoni & Riesgo, 2007 (CNPGG-2422); F. Mycale (Mycale) laevis (Carter, 1882) (CNPGG-2273); F. Mycale (Arenochalina) laxissima (Duchassaing & Michelotti, 1864) (CNPGG-2267); H. Polymastia tenax Pulitzer-Finali, 1986 (CNPGG-22587); I. Scopalina ruetzleri (Wiedenmayer, 1977) (CNPGG-2183); J. Svenzea cristinae Alvarez, van Soest & Rützler, 2002 (CNPGG- 2474); K. Svenzea flava (Lehnert & van Soest, 1999) (CNPGG-2288); L. Svenzea tubulosa (Alcolado & Gotera, 1986) (CN- PGG-2272), surface detail zoomed in (arrow indicates white channels in the choanosomal region). Scale bars, A–L = 1 cm.