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FIGURE 6 in Taxonomy of Rhabderemia Topsent, 1890 collected from the southeastern Brazilian continental shelf and slope by Programme REVIZEE (Rhabderemiidae, Poecilosclerida, Demospongiae), with the description of two new species

FIGURE 6. Possible reconstruction of ancestral habitat preferences mapped on Van Soest & Hooper´s (1993) phylogeny of Rhabderemia. The two new species described here were attached to their likely positions (dotted lines) based on morphologic affinity, as discussed in the text. Stout black lines = deepwater species and likely deepwater ancestors. Stout gray lines = shallowwater species and likely shallowwater ancestors. Slender black lines = species for which depth was not recorded or uncertain ancestral assignments. Arrows indicate likely events of deepwater invasion.

FIGURE 5 in Taxonomy of Rhabderemia Topsent, 1890 collected from the southeastern Brazilian continental shelf and slope by Programme REVIZEE (Rhabderemiidae, Poecilosclerida, Demospongiae), with the description of two new species

FIGURE 5. Rhabderemia itajai sp. nov. (A) Preserved specimen; (B) Skeleton arrangement; (C) Rhabdostyle; (D) Microstyles; (E) Spined base of microstyles; (F) Microstyles and a small spirosigmata; (G) Small spirosigma; (H) Small spirosigma. Scale bars: A, 1,0cm; B, 100µm; C, 100µm; D, F, 10µm; E, G, H, 1µm.

FIGURE 4 in Taxonomy of Rhabderemia Topsent, 1890 collected from the southeastern Brazilian continental shelf and slope by Programme REVIZEE (Rhabderemiidae, Poecilosclerida, Demospongiae), with the description of two new species

FIGURE 4. Rhabderemia besnardi sp. nov. (A) Preserved specimen; (B) Skeleton arrangement; (C) Rhabdostyle; (D) Smooth base of rhabdostyle; (E) Microstyle; (F) Spined base of microstyle and a small spirosigma; (G) Small spirosigmata. Scale bars: A, 0,5cm; B, 200µm; C, 50µm; D–F, 10µm; G, 1µm.

FIGURE 3 in Taxonomy of Rhabderemia Topsent, 1890 collected from the southeastern Brazilian continental shelf and slope by Programme REVIZEE (Rhabderemiidae, Poecilosclerida, Demospongiae), with the description of two new species

FIGURE 3. Distribution frequency of the sizeclasses of the rhabdostyles of the Brazilian Rhabderemia uruguaiensis (MNRJ 4658).

FIGURE 2 in Taxonomy of Rhabderemia Topsent, 1890 collected from the southeastern Brazilian continental shelf and slope by Programme REVIZEE (Rhabderemiidae, Poecilosclerida, Demospongiae), with the description of two new species

FIGURE 2. Rhabderemia uruguaiensis Van Soest & Hooper, 1993. (A) Preserved specimen; (B) Skeleton arrangement; (C) Rhabdostyle; (D) Smooth base of rhabdostyle; (E) Microstyles; (F) Spined base of microstyles; (G) Small spirosigma. Scale bars: A, 1cm; B, 200µm; C, 50µm; D– E,10µm, F–G, 1µm.

FIGURE 1. Map showing the collecting stations 6681, 6686 and 6786 in Taxonomy of Rhabderemia Topsent, 1890 collected from the southeastern Brazilian continental shelf and slope by Programme REVIZEE (Rhabderemiidae, Poecilosclerida, Demospongiae), with the description of two new species

FIGURE 1. Map showing the collecting stations 6681, 6686 and 6786 from Programme REVIZEE, on the southern/southeastern Brazilian coastline.

Figure 6 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida

Figure 6. Mycale (Aegogropila) rubra sp. nov. (holotype, MNRJ 16270). (A) Mycalostyle; (B) detail of mycalostyle base; (C) anisochelae I in oblique side view (top) and oblique face view (bottom); (D) anisochelae II (left, face view; middle, face view of young spicule; right, face view); (E) anisochelae III (side view); (F) sigma; (G) toxa I (both halves slightly overlaid); (H) toxa II. Scale bars: A, C–H, 20 µm; B, 50 µm.

Figure 5 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida

Figure 5. Mycale (Aegogropila) rubra sp. nov. (holotype, MNRJ 16270). (A) Tangential section of ectosomal skeleton; (B, C) detail of ectosome showing abundant microscleres (a1, anisochelae–I; a2, anisochelae–II; a3, anisochelae–III; r, rosette; s1, sigmas–I; s2, sigmas–II; t, toxas). Scale bars: A, 100 µm; B, C, 50 µm.

Figure 4 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida

Figure 4. Rhabderemia meirimensis sp. nov. (holotype, MNRJ 14275). (A) Ectosomal skeleton; (B) choanosomal skeleton; (C, D) rhabdostyles I; (E) rhabdostyle II; (F) rhabdostyle III; (G) distally microspined sigma; (H) details of microspined terminations of sigmas; (I, J) spirosigmas. Scale bars: A, B, 200 µm; C–F, 100 µm; G, 20 µm; H–J, 5 µm.

Figure 2 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida

Figure 2. In situ photographs of the new species described in this study. (A) Plakina coerulea sp. nov. (holotype, MNRJ 14295 at Piscina dos Amores); (B) Rhabderemia meirimensis sp. nov. (holotype, MNRJ 14275 at Ponta do Meirim); (C) Mycale (Aegogropila) rubra sp. nov. (paratype, MNRJ 14050 at Praia do Francês). Scale bars: 1 cm.

Figure 1 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida

Figure 1. Map showing South America and Brazil, with Alagoas state in black (upper left), an expanded Alagoas state with Maceió city in black (upper middle), and the collecting localities off Maceió ((A) Piscina dos Amores; (B) Riacho Doce; (C) Ponta do Meirim; (D) Ponta do Prego).