Racodiscula seymoura, Schuster & Cárdenas & Pisera & Pomponi & Kelly & Wörheide & Erpenbeck, 2018

RACODISCULA SEYMOURA View in CoL SP. NOV.

( FIGS 10, 11; TABLE 3)

Diagnosis: Racodiscula with one oval to circular cavity/osculum (0.7 cm) opening in a shallow centred depression; choanosomal spicules are zygosed root-like tetraclone desmas with long and thin branches; choanosomal spicules are thick strongyles.

Type material: Holotype: HBOM 003 View Materials :02014, Coll. JSL-I dive 3529, [30 October 1995, Galápagos, 66 NM NE of Seymour Island , 0°22 ′ 51 ″ S, 90°16 ′ 06 ″ W, 396 m] GoogleMaps . Paratype: HBOM 003 View Materials :02007 (319 m), Galápagos, N-Side 1.25 NM W of PTA Vincente Roca NW Coast, Isabela Island, 0°14 ′ 31 ″ S, 91°24 ′ 56 ″ W, Coll GoogleMaps . JSL-I dive 3915.

Comparative material: Racodiscula radixa sp. nov. HBOM 003 View Materials :02006. Racodiscula borisi sp. nov . HBOM 003 View Materials :02011 (242 m), Galápagos Island , Tortuga Island, 1°4 ′ 59 ″ S, 90°51 ′ 56 ″ W, Coll GoogleMaps . JSL-I dive 3923; HBOM 003 View Materials :02001 (215 m), Galápagos Island , San Cristobal Island, 0°43 ′ 08 ″ S, 89°27 ′ 14 ″ W, Coll GoogleMaps . JSL-I dive 3905.

Type locality: Seymour Island , Galápagos Islands (396 m) ( Fig. 1) .

Information for Corallistes isabela taken from table 9 of Desqueyroux-Faúndez & Van Soest (1997). clad = cladome; rhabd = rhabdome.