Geodia tylastra Boury-Esnault, 1973

Almeida, Danilo S., Sandes, Joana, Guimarães, Carmen R. P. & Muricy, Guilherme, 2021, Taxonomy of Geodia and Rhabdastrella from the Brazilian coast: a new species new synonyms and redescription of Geodia tylastra (Demospongiae: Astrophorina Geodiidae and Ancorinidae), Zootaxa 4995 (2), pp. 281-302 : 285

Geodia tylastra Boury-Esnault, 1973

( Figs. 3–8 ; Tabs. 1–3)

Figures

FIGURE 3. Distribution of Geodia glariosa, Geodia tylastra and Geodia polytriaena sp. nov. Stars represent new species and new records (nr) and circles are previous records (pr) from the literature. See Tab. 2 for localities and references.

FIGURE 4. Morphological variation of Geodia tylastra in vivo in different localities in Brazil (all published as G. corticostylifera). A, Arraial do Cabo, Rio de Janeiro State (from Muricy & Hajdu 2006, photo by Eduardo Hajdu); B, Salvador, Bahia State (from Hajdu et al. 2011; photo by Eduardo Hajdu). C–D, Potiguar Basin, Rio Grande do Norte State (from Muricy et al. 2008; photos by Fernando Moraes). Approximate size of the specimens: A, 12 cm wide; B, 2.5 cm high; C, 8 cm wide; D, 6 cm high.

FIGURE 5. Type specimens of (A–B) Geodia tylastra (Holotype MNHN.LBIM.D.NBE 999); (C–D) Rhabdastrella fibrosa (Holotype YPM 5730); (E–F) Geodia corticostylifera (E, Paratype UFRJPOR 3714; F, Paratype UFRJPOR 2906). A, C, E, top views; B, D, F, side views.

FIGURE 6. Ectosome and choanosome in transversal section of Geodia tylastra Boury-Esnault, 1973, showing outer cortex (ocx), inner cortex (icx) and choanosome (cho). (A) MNHN.LBIM.D.NBE 999 (holotype); (B) YPM 5730 (holotype of Rhabdastrella fibrosa); (C) UFRJPOR 3098 (holotype of Geodia corticostylifera).

FIGURE 7. Megascleres of the holotypes of (A) Geodia tylastra (MNHN.LBIM.D.NBE 999), (B) Rhabdastrella fibrosa (YPM 5730), and (C) Geodia corticostylifera (UFRJPOR 3098). A1, B1, C1: Choanosomal oxeas; A2, B2, C2: Cortical styles; A3, B3, C3: Cortical style ends; A4, B4. C4: Orthotriaenes.

FIGURE 8. Microscleres of the holotypes of (A) Geodia tylastra (MNHN.LBIM.D.NBE 999), (B) Rhabdastrella fibrosa (YPM 5730) and (C) Geodia corticostylifera (UFRJPOR 3098). A1, B1, C1: Sterrasters. A2, B2, C2: Oxyasters I. A3, B3, C3: Oxyasters II.