FIGURE 5 in New species of Crella (Pytheas) Topsent, 1890 and Crellomima Rezvoi, 1925 (Crellidae, Poecilosclerida, Demospongiae) from Chilean shallow and Argentinean deep waters, with a synthesis on the known phylogenetic relationships of crellid sponges

FIGURE 5. Crella (Pytheas) desventuradae Fernandez, Gastaldi, Zapata-Hernández & Hajdu, sp. nov.: skeleton (A–F) and spicules (G–M, in SEM and light microscopy) of the holotype―MNHNCL POR-15019. A, transverse section. B, ectosomal region. C, detail of a spongin fiber at the subectosomal region with ectosomal acanthostyles (iii) and tract of tornotes (t) inside it. D, Ectosomal and subectosomal regions with ectosomal acanthostyles. E, choanosomal region with mesh of spongin fibers echinated by choanosomal acanthostyles I and II. F, detail of a spongin fiber echinated by choanosomal acanthostyles I (i) and II (ii) and with ectosomal acanthostyles (iii) inside it. G, spiculation showing choanosomal acanthostyles I (i) and II (ii), ecotosomal acanthostyles (iii), tornotes (t) and arcuate isochelae (a). H, extremities of a tornotes; I, choanosomal acanthostyles I; J, choanosomal acanthostyles II. K, ectosomal acanthostyles. L, acanthoxeas (in light microscopy). M, arcuate isochelae. Scale bars: A = 500 µm; B–D= 50 µm; E =200 µm; F = 50 µm; G = 50 µm; H = 1 µm; I–K = 10 µm; L = 20 µm; M = 2 µm.