Tedania (Tedania) fulvum, Aguilar-Camacho & Carballo & Cruz-Barraza, 2018

Aguilar-Camacho, Jose Maria, Carballo, Jose Luis & Cruz-Barraza, Jose Antonio, 2018, Tedania (Porifera: Demospongiae: Poecilosclerida) from the Mexican Pacific with the description of two new species, Journal of Natural History 52 (19 - 20), pp. 1311-1332 : 1317-1319

Tedania (Tedania) fulvum sp. nov.

( Figures 3 (b), 5, Table 2)

Material examined

Holotype: 2064-LEB-ICML-UNAM, 24 June 2011, Isla Hermano Sur (Mazatlán, Sinaloa) 8 m (23° 11 ʹ 5 ʺ N, 106°24 ʹ 7 ʺ W).

Description

Thinly encrusting sponge 1–3 cm long, 2–8 mm thick. Surface smooth. Oscula and ostia not visible. Consistency flexible and elastic. Colour in life yellow; pale in preservation ( Figure 3 (b)).

Skeleton

Ectosomal tylotes with smooth heads, 130–150 × 2.5–5 μm ( Figure 5 (b)); choanosomal styles curved or straight, 135–185 × 2.5–5 μm ( Figure 5 (a)) and onychaetes in variable dimensions: 30–120 × 0.5–1 μm ( Figure 5 (c), 5(d)). The ectosomal skeleton is a layer of tylotes (15 μm thick). The choanosomal skeleton has a plumose reticulum made of multispicular fibres (15–35 μm thick). The onychaetes are dispersed with no special organization.

Remarks

Tedania (Tedania) fulvum sp. nov. is an encrusting sponge from the Bay of Mazatlan with tylotes bearing smooth heads, straight choanosomal styles and onychaetes. There are four species with these features in the Pacific Ocean. Tedania (Tedania) battershilli Bergquist and Fromont 1988 is a red/orange encrusting sponge described from the Maori Islands

Tylotes Styles Onychaetes Material examined (L × W) (L × W) (L)

LEB-2064 130-(142.5)-150 × 2.5-(2.7)-5 135-(171.5)-185 × 2.5-(3.4)-5 30-(60.5)-120

( New Zealand), with tylotes (185–310 × 3–5 μm), styles (215–315 × 4.5–7 μm) and onychaetes in two categories (I, 105–163 μm; II, 33–73 μm). The megascleres are shorter in T. (Tedania) fulvum sp. nov. than in T. (Tedania) battershilli . Tedania (Tedania) purpurescens Bergquist and Fromont 1988 is a purple encrusting sponge described from Poor Knight Island ( New Zealand) with tylotes/politylotes (270–300 × 3–5 μm), styles straight (230–300 × 4–6.5 μm) and onychaetes in two categories (I, 110–133 μm; II, 45–55 μm). The megascleres are longer in T. (Tedania) purpurescens than in T. (Tedania) fulvum sp. nov. Tedania (Tedania) rhoi Sim and Lee 1998 is a pinkish massive or cushion-shaped sponge from Korea. This species has tylotes (230–290 × 4–5 μm), straight styles (270–340 × 8–10 μm) and onychaetes in three categories (I, 160–170 × 1 μm; II, 120–130 × 3 μm; III, 40–50 × 1 μm). The megascleres are shorter in T. (Tedania) fulvum sp. nov. than in T. (Tedania) rhoi . Tedania (Tedania) toxicalis de Laubenfels 1930 is a brownish-red sponge from California with tylotes (200 × 8–14 μm), choanosomal subtylostyles (100–200 × 2–7 μm) and onychaetes (150 μm). The tylotes are longer and thicker in T. (Tedania) toxicalis than in T. (Tedania) fulvum sp. nov.

Etymology

Named fulvum which means yellow in Latin.

Figures

Figure 3. External morphologies of the two new species. (a) Tedania (Tedania) tropicalis sp. nov.; (b) Tedania (Tedania) fulvum sp. nov.

Figure 5. Tedania (Tedania) fulvum sp. nov. (a) Choanosomal styles. (b) Ectosomal tylotes with smooth heads. (c) Onychaetes in different sizes. (d) Closer view of the microspined surface of the onychaetes.