Bairdoppilata

Brandão, Simone N., 2008, New species of Bairdioidea (Crustacea, Ostracoda) from the Southern Ocean and discussions on Bairdoppilata simplex (Brady, 1880),? Bairdoppilata labiata (Müller, 1908) and Bythopussella aculeata (Müller, 1908) *, Zootaxa 1866, pp. 373-452 : 396

Bairdoppilata sp. 3

(Figs. 3.12, 4, 15.A–G)

1989 Bairdoppilata simplex, Hartmann : 211.

Material. 3 LV (plus 2 broken V), off South Georgia, F.F.S Walter Herwig cruise 68/1, station 7­1, 53°43.5’S, 41°47.8’W, 137m, date 28.1.1985, temperature 1.486°C, salinity 34.002 ‰, rocky substrate, ZMH K­ 33798. This material was studied (but not illustrated) by Hartmann (1989).

Distribution. Off South Georgia, Southern Ocean (Atlantic Sector), 137m.

Measurements ( Fig. 4 ). LV, L 1.31–1.36mm, H 0.81–0.86mm

Description. LV globose­ovate in lateral view, anterior conspicuously more broadly rounded than posterior, not caudate, dorsal margin highly arcuate. Valve surface punctuated. Normal pore canals large, numerous, located among punctae, with very thin rim, and sensilla of variable length. No fringes or denticles present on the 3 subfossil LV. Calcified inner lamella fairly narrow; vestibules constricted. Hinge anterior and posterior elements with 4 well developed denticles and sockets. Nine adductor muscle scars present.

Remarks. Bairdoppilata sp. 3 differs greatly from B. simplex and? B. labiata on its more globose carapace and punctuated surface ( Fig. 15.A–G).

Figures

FIGURE 4. Length: height scatter plot of the valves of specimens previously recorded as Bairdoppilata simplex (Brady, 1880) (including all misidentifications). Legend: Measurements taken from: B. simplex – lectotype of B. simplex; B. labiata – lecto­ and paralectotypes; B. aff. 1 – B. sp. 1 aff. B labiata (as identified herein); B. aff. 2 – B. sp. 2 aff. B labiata (as identified herein); B. spp. – all other misidentifications of B. simplex (Dingle 1993; Neale 1967; Maddocks 1969; Hartmann 1989; Hartmann 1993; Whatley et al. 1995, 1996, 1997 a; Whatley et al. 1998 b).