Anthenoides marleyi Mortensen 1925

Mah, Christopher L., 2018, New genera, species and occurrence records of Goniasteridae (Asteroidea; Echinodermata) from the Indian Ocean, Zootaxa 4539 (1), pp. 1-116 : 9

Anthenoides marleyi Mortensen 1925

Figure 2 A–F

Mortensen 1925: 149, pl. 8, figs. 1,2, text figs. 2–4; Mortensen 1933: 245; Macan 1938: 402; Clark & Courtman-Stock 1976: 60; A.M. Clark 1993: 242. (as A. marleyi ) Jangoux & Aziz 1988: 633 (as A. cristatus )

Diagnosis. This species is distinguished by the presence of one to many button-like granules on the superomarginal ( Fig. 2B,C ) and actinal plates, a duck billed (i.e. paddle-shaped) pedicellariae on the adambulacral plate ( Fig. 2E ) adjacent to furrow spines. Additionally, a bivalve pedicellariae is present on the adambulacral plate surface adjacent five to eight furrow spines ( Fig. 2E ). It possesses two to four short spines on the inferomarginal plate surface ( Fig. 2C ).

Comments. Observations of this species from Madagascar, the Mascarene Islands, the Mayotte Islands, and Reunion Island show variation in inferomarginal spine morphology. Madagascar specimens display welldeveloped, cylindrical spines with blunt, quadrate flattened tips. Specimens from the Mascarene Islands and off the Mayotte Islands show inferomarginal spines with conical, pointed tips. Reunion Island specimens show more weakly developed tubercle-like pointed inferomarginal spines.

One specimen, IE-2007-1173 showed significant sublethal damage in the interradial region.

Macan (1938: 402) outlined the color of this species with a “white” abactinal surface “with a fine reticulation of carnelian red between the plates.” Deck shots of this species by BIOMAGLO show individuals as a bright yellow with speckled red highlights.

Occurrence. South Africa, off the coast of Natal. Zanzibar channel, Reunion Island, Mascarene Islands, Madagascar, north of Mayotte Island 183–490 m (depth range extended)

Material Examined. IE-2007-1001 Madagascar 15°34’S 45°44’, 283 m. 1 wet spec. R=9.2, r=3.5 ; IE-2007- 1050 Madagascar 12°30’S 48°18’E, 376 m, Coll. Bouchet et al . MIRIKY. 1 wet spec. R=9.2, r=3.4; IE-2007-1061 Madagascar 15°35’S 45°45’, 193 m. 1 wet spec. R=7.9, r=3.3 ; IE-2007-1173 Madagascar 15°36’S 48°16’, 364 m, Coll. Bouchet et al . MIRIKY. 4 wet specs. R=7.9, r=3.0; R=8.5, r=3.2; R=8.0, r=2.9; R=9.1, r=3.2; R=5.0, r=1.6; IE-2013-6626 . Madagascar 18°55’S, 43°56’E, 250 m, Coll. A. Crosnier 24 Nov. 1973. 1 dry spec. R=9.2, r=3.3 ; IE- 2013-6627 . Madagascar 15°20.5’S 46°9.0’ E, 310– 350 m. Coll. A. Crosnier 7 Nov. 1972. 1 dry spec. R=2.9, r=1.1 ; IE-2013-6628 . Madagascar 12°42.9’S 48°12.1’E, 415– 455 m. Coll. A. Crosnier 12 Sept. 1972. 4 dry spec. R=6.3, r=2.6; R=7.1, r=2.6; R=5.5, r=2.0; R=4.6, r=1.7 ; IE-2013-6629 . Madagascar 12°43.5’S, 48°14.3’E, 370 m, Coll. A. Crosnier, 14 April 1971. 1 dry spec. R=2.9, r=1.0; R=3.0, r=1.1 ; IE-2013-6631 . Madagascar 12°33.8’S, 48°17.5’E, 355–365 m Coll. A. Crosnier, 18 Jan 1972. 1 dry spec. R=11.4, r=4.3 ; IE-2013-6630 . Madagascar 12°43’S, 48°15’E, 348–360 m, Coll. A. Crosnier, 14 April 1971. 9 dry specs. R=11.8, r=4.0; R=7.1, r=2.4; R=6.3, r=2.4; R=6.6, r=2.2, R=6.3, r=2.3; R=6.1, r=2.4; R=6.9, r=2.7; R=5.3, r=2.0; R=5.0, r=2.0, arm tips broken ; IE-2013- 6632 . Madagascar 15°19.1’S 46°11.8’E, 400 m Coll. A. Crosnier, 11 Nov 1972, No. 133. 1 dry spec. R=9.3, r=3.6 ; IE-2013-6633 . Madagascar 12°46.4’S 48°11.5’E, 405–410 m Coll. A. Crosnier 15 Sept 1972, No. 134. 1 dry spec. R=6.2, r=2.6 , IE-2013-6634 . Madagascar 21°25.5’S 43°14.5’E, 425–550 m Coll. A. Crosnier, 26 Nov 1972. No. 135. 1 dry spec. R=5.4, r=2.2 ; IE-2013-6635 . Madagascar 12°41.3’S 48°16’E, 308–314 m Coll. A. Crosnier, 15 April 1971. No. 127. 2 dry specs. R=9.3, r=3.2; R=8.8, r=3.3 ; IE-20013-6636 . Madagascar 12°42.7’S 48°12.8’E, 444– 435 m Coll. A. Crosnier, 5 March 1971, No. 140. 2 dry specs. R=5.9, r=2.7, arm tips broken; R=5.5, r=1.9 , IE- 2013-6637 . Madagascar 22°17.3’S 43°5.9’E, 350 m. Coll. A. Crosnier, 27 Nov 1973 Chalutage 93. 2 dry specs. R=8.3, r=3.3; R=8.8, r=3.3 . IE-2013-6638 . Madagascar 12°43.5’S 48°14.3’E, 370m Coll. A. Crosnier, 14 April 1971, No. 142. 3 dry specs. R=5.5, r=2.0; R=4.6, r=1.6; R=4.4, r=1.6 . IE-2013-6639 . Madagascar 15°25.7’S 46°1.0’E, 200–210 m Coll. A. Crosnier, 7 Nov 1972, No. 129. 1 dry spec.R=8.3, r=3.2 , IE-2013-6640 , Madagascar 12°43.5’S 48°14.3’E, 370 m Coll. A. Crosnier, 14 April 1971, No. 141. 2 dry specs. R=6.2, r=2.5; R=5.8, r=2.2 , IE- 2013-6641 . Madagascar 22°18’S 43°4.7’E, 400m Coll. A. Crosnier, 27 Nov 1973, No. 131. 3 dry specs. R=9.9, r=3.6; R=5.5, r=2.3; R=6.0, r=2.2. Mascarene Islands : IE-2013-6642 Mascarene Islands 22˚12,3' S; 43˚ 08 2 E 300–320 m coll . CLEVA Mascarene Islands III s III-st. 1. 20/12 /1985, 6 dry specs. R=7.2, r=2.9; R=8.0, r=3.1; R=6.4, r=2.6; R=6.2, r=2.4: R=4.5; r=1.9; R=4.2, r=1.6; Reunion Island . IE-2013-6644 . au large de Le Port Reunion Island 20°58’S, 55°14’E, 300–410 m, Coll. R / V Marion Dufresne MD 32 , St. CP 181. 9-9-82 (1 dry spec. R=9.2, r=3.7) ; IE-2013-6645 . Reunion Island 21° 03’S, 55°0’E, 460–490 m, Coll. R / V Marion Dufresne MD 32 , CP 60, 2 dry specs. R=6.2, r=2.4: R=7.5, r=2.7. Mayotte Island . IE-2013-17164 , Off west coast of Mayotte Island, 12° 47 'S, 44 ° 58' E to 12° 46 'S, 44° 58' E, 460– 473 m. Coll. CP 4845, Jan 30, 2017. 3 wet specs. R=9.7 r=3.7, R=11.0 r=3.8, R=10.6 r=3.6 . IE-2013-17165 , Off west coast of Mayotte Island, 12° 47 'S, 44° 58' E to 12° 46 'S, 44° 59' E, 455– 460 m. Coll . DW 4844 , Jan 30, 2017. 1 wet spec. R=9.4 r=3.3 . IE-2013-17188 , NW of Mayotte Island, 12° 35 'S, 44° 55' E to 12° 34 'S, 44° 55' E, 402– 392 m. Coll . CP 4849, Jan 30, 2017. 1 wet spec. R=12.3 r=4.4 .

Figures

FIGURE 2. Anthenoides marleyi Specimen IE-2013-6639. R=8.3, r=3.2 cm. A. Abactinal surface. Scale=3.0 cm. B. Closeup of abactinal surface and superomarginal plates. Scale=1.0 cm. C. Spines on superomarginal plates.Scale=1.0 cm. D. Actinal surface. Scale=3.0 cm. E. Furrow and adambulacral spination. Scale=1.0 cm.