Heteroxya, TOPSENT, 1898

Morrow, Christine, Cárdenas, Paco, Boury-Esnault, Nicole, Picton, Bernard, Mccormack, Grace, Soest, Rob Van, Collins, Allen, Redmond, Niamh, Maggs, Christine, Sigwart, Julia & Allcock, Louise A., 2019, Integrating morphological and molecular taxonomy with the revised concept of Stelligeridae (Porifera: Demospongiae), Zoological Journal of the Linnean Society 187, pp. 31-81 : 65-66

GENUS HETEROXYA TOPSENT, 1898

Diagnosis emended: Encrusting growth form; surface highly hispid; choanosome with a condensed basal layer of spongin lying on the substrate, containing (acanth)oxeas distributed without appreciable order on basal spongin and strewn throughout the mesohyl; subectosomal skeleton consists of oxeas arranged perpendicular to the ectosome, protruding through the surface, but not embedded in basal spongin; ectosomal skeleton with a perpendicular palisade of smaller (acanth)oxeas, through which the larger subectosomal oxeas protrude; long styles present in one species. Two categories of oxea, smooth or spined; larger oxea sometimes with a double flex; microscleres absent.

Type species: Heteroxya corticata Topsent, 1898 (pp. 231–234, fig. 2a).

Included species: Heteroxya corticata ; Heteroxya beauforti Morrow sp. nov.