Eurypon patriciae, Aguilar-Camacho & Carballo, 2013

Aguilar-Camacho, Jose Maria & Carballo, Jose Luis, 2013, Raspailiidae (Porifera: Demospongiae: Axinellida) from the Mexican Pacific Ocean with the description of seven new species, Journal of Natural History (J. Nat. Hist.) 47 (25 - 28), pp. 1663-1706: 1683-1687

publication ID

http://doi.org/ 10.1080/00222933.2013.769642

publication LSID

lsid:zoobank.org:pub:74DE7552-F218-48AF-89E2-2EB24465404F

persistent identifier

http://treatment.plazi.org/id/03E287BA-9E4E-5305-FDDA-FA2535F18ADE

treatment provided by

Carolina

scientific name

Eurypon patriciae
status

sp. nov.

Eurypon patriciae   sp. nov.

( Figures 14A View Figure 14 , 15 View Figure 15 , 16 View Figure 16 )

Material examined

Holotype: MCNM 1.01 / 658, 18 / 10 / 2001, Isla Lobos 1 (Mazatlán, Sinaloa) 5 m (23 ◦ 13 ′ 49 ′′ N, 106 ◦ 27 ′ 43 ′′ W)   . Paratypes: 107-LEB-ICML-UNAM, 18 / 10 / 2001, Isla Lobos 1 (Mazatlán, Sinaloa) 5 m   (23 ◦ 13 ′ 49 ′′ N, 106 ◦ 27 ′ 43 ′′

W).128-LEB-ICML-UNAM, 18 / 10 / 2001, Isla Lobos 1 (Mazatlán, Sinaloa) 5 m   (23 ◦ 13 ′ 49 ′′ N, 106 ◦ 27 ′ 43 ′′ W).

Description

Encrusting sponge, size 2–4 cm length × 1–3 cm width and 6–8 mm thick growing over rocks. Oscules and ostia are not visible. Surface hispid due to evenly distributed projecting spicules. Consistency fleshy and difficult to tear. Colour in life yellow or green, pale brown in preservation ( Figure 14A View Figure 14 ).

Skeleton

Straight choanosomal tylostyles: 1320–2400 × 10–25 µm ( Figures 15A, B View Figure 15 , 16A View Figure 16 ). Acanthostyles with short recurved spines in two sizes: 1) 130–180 × 5–7.5 µm ( Figures 15C View Figure 15 , 16C View Figure 16 ); 2) 55–87.5 × 2.5–5 µm ( Figures 15D View Figure 15 , 16C View Figure 16 ). Straight strongyloxeas / styles: 400–550 × 5–10 µm ( Figures 15E View Figure 15 , 16B View Figure 16 ) ( Table 8). The ectosomal skeleton is absent. The points of the spicules are protruding externally. The choanosomal skeleton has a hymedesmoid structure. Main tylostyles and acanthostyles are embedded in a spongin layer (20–40 µm thick). The strongyloxeas and styles are dispersed in groups of one to three arranged along the tylostyles in the choanosome ( Figure 16D View Figure 16 ).

Remarks

Eurypon patriciae   sp. nov. is a subtidal sponge distributed in the Gulf of California. In the Eastern Pacific, there are two species assigned to this genus. Eurypon nigrum Bergquist 1967   is a blue encrusting sponge described from Oahu (Hawaii). It has tylostyles in two sizes (1200–2400 µm × 6–12 µm and 170–800 × 6–12 µm) and acanthotylostyles (70–165 × 6–9 µm). The spicule measurements are similar in these two species. However, E. nigrum   has tylostyles as ectosomal spicules while E. patriciae   sp. nov. has strongyloxeas and styles. Eurypon miniaceum Thiele 1905   is a red encrusting sponge described from Calbuco ( Chile) at 30 m depth. It has tylostyles in three categories (2000–3000 × 30 µm; 800 × 30 µm; and> 120 µm), acanthostyles (120 µm) and subectosomal styles (550 × 5 µm). Eurypon patriciae   sp. nov. has one category of styles while E. miniaceum   has three.

Etymology

Named for Patricia Bergquist for her contribution to sponge science.