Taeniogyrus papillis O’Loughlin, 2007

O’Loughlin, P. Mark, 2007, New apodid species from southern Australia (Echinodermata: Holothuroidea: Apodida), Memoirs of Museum Victoria 64, pp. 53-70 : 61

Taeniogyrus papillis O’Loughlin sp. nov.

Figure 5

Material examined. Holotype: SE South Australia, Beachport , “Salmon Hole”, shallow sub-littoral, in sand under rock with Taeniogyrus roebucki, M. O’Loughlin , 29 Jan 1989, NMV F59195 (1, with 5 microscope slides).

Paratypes: SE South Australia, Cape Northumberland, algal “scrapings”, M. Mackenzie, R. McIntosh, M. O’Loughlin, 6 Jan 2001, F94119 (1 in 2 pieces, with 1 microscope slide). Victoria, Marengo ( SW of Apollo Bay ), M. O’Loughlin, 11 Jan 1980, F59197 (1, with 1 microscope slide); Cape Paterson, rocky shallows, M. O’Loughlin, M. Nyhuis, 29 Jan 1988, F59196 (1, with 2 microscope slides) .

Other material. SE South Australia, Cape Banks, W side, off Caulerpa , 1 m, CRUST 74, 11 May 1990, F94706 (1, fragment) .

Description. Up to 60 mm long, 2 mm diameter (preserved); body wall with close cover of discrete domed projections (papillae) present in extended and contracted specimens; anterior dorsal body and tentacles overhang ventral body and tentacles; tentacles digitate, 10, each with predominantly 5 pairs of digits, longest pair distally, shortest pair proximally; calcareous ring with 5 radial 5 interradial plates all fused to form narrow ring; plates low, with concave indentations anteriorly and posteriorly, some plates asymmetrical anteriorly with low blunt anterior projection on one side of indentation; single dorsal madreporite; 1 polian vesicle, ventral; narrow band of ciliated funnels along mid-dorsal interradius, on both sides of mesentery attachment; 2 unbranched gonad tubules, 1 on each side of dorsal mesentery, joined dorsally at shared gonoduct.

Body wall ossicles wheels, sigmoid hooks: wheels scattered in interradii of body wall, sparse ventrally, rounded hexagonal form, 6 spokes, inner margin of rim parallel to outer margin, inner margin with continuous teeth, wheel diameters 64–96 μ m; sigmoid hooks over and adjacent to longitudinal muscles, more numerous and slightly smaller than wheels, outer curved side of hook smooth, hook lengths 64–80 μ m. Papillae lacking concentrations of ossicles. Tentacles with rod ossicles: rods curved, swollen centrally, tapering distally, ends with short lobed to blunt branches, rods lacking side branches or denticulations, rods 56–96 μ m long.

Colour (live). Body translucent with close cover of dark red papillae. Preserved holotype with red flecking on vascular ring, polian vesicles and longitudinal muscles.

Etymology. From the Latin papilla (small swelling, bud, nipple),referringtotheclosecoverofsmalldomedprotuberances on the body surface.

Distribution. Victoria (Cape Paterson) to SE South Australia (Beachport); rocky shallow sub-littoral, 0– 1 m.

Remarks. Taeniogyrus papillis sp. nov. is distinguished in the key (above) from the 3 other species of Taeniogyrus Semper in southern Australia. The holotype has 3 anterior tubular growth infestations arising near the vascular ring, 2 with short branches distally.