Echinostylinos, Topsent, 1927

Castello-Branco, Cristiana & Hajdu, Eduardo, 2024, Sponges (Demospongiae, Poecilosclerida) from New Deep-sea Frontiers in the Southwestern Atlantic: New Species, New Combinations and Taxonomic Remarks on Echinostylinos, Zoological Studies 63 (46), pp. 1-19 : 9

On other Echinostylinos

During the process of review of the genus to describe the new species, considerations were taken regarding some known species of Echinostylinos :

Carvalho et al. (2016) discussed the possibility of a E. shimushirensis and E. tubiformis be synonymous. Here, we tabulated their morphological characteristics and habitat information based on their descriptions available ( Fig. 6 ; Table 1).

Previous studies had discussed about spicule shape and classification of Echinostylinos species ( Carvalho et al. 2016; Vacelet and Kelly 2022), we re-analyzed the type material of Echinostylinos gorgonopsis , here redescribed below:

Figures

Fig. 6. Echinostylinos shimushirensis Koltun, 1970 vs. Echinostylinos tubiformis (Lévi, 1993) spicular set. A–D, E. shimushirensis (holotype, ZIRAS 10693; reanalyzed here): A, Styles I; B, styles II; C, isochelae; D, sigma I; E, sigma II. F–J, Echinostylinos tubiformis (holotype, MNHN DCL 3611, reanalyzed here): F, Styles II; G, isochelae from the back side; H, sigma I; I, sigma II. Scale bars: A = 200 µm, B, F = 50 µm; C, G = 10 µm; D, H = 5 µm; E, I = 2 µm.