Macphersonea, Shea & Colgan & Stanisic, 2012

Shea, M., Colgan, D. J. & Stanisic, J., 2012, 3585, Zootaxa 3585, pp. 1-109 : 84

Macphersonea n. gen.

Gyrocochlea Hedley : Stanisic el al. 2010: 196 (in part).

Type species. Macphersonea canalis ( Stanisic, 2010) n. comb. —here designated.

Etymology. For the Macpherson Ranges on the NSW-Qld border.

Diagnosis. Shell very small, pale orange to light brown, biconcave with depressed spire. Protoconch sculpture strongly reticulate with 19 closely spaced, continuous, narrow spiral cords and numerous, equally high, closely spaced arcuate radial ridges, forming a regular network. Teleoconch sculpture of numerous, prominent, quite uniformly spaced, slightly sinuate, strongly prosocline radial ribs; microsculpture cancellate with prominent microradial ribs and low microspiral cords. Aperture roundly lunate. Umbilicus wide cup-shaped. Penis tubular with an expanded apical portion, internally a bud-like verge or vergic structure less than half length of penis; verge pore terminal; penial pilasters present consisting of 1–2 V or Y-shaped and 2–3 longitudinal ridged folds. Pallial roof with black maculation.

Distribution and habitat. Border Ranges and adjacent coastal areas, north-eastern NSW/south-eastern Queensland; found in rainforest; living under logs.

Remarks. Macphersonea n. gen. is distinguished by the striking cancellate protoconch and channelled sutures. The protoconch sculpture differs from the lattice-like pattern seen in Dictyoropa in that the spiral and radial elements of Macphersonea are of equal height thereby forming a distinct network over the whole of the protoconch. Currently only one species is known.