Luisella gen. n. Figs 2, 45

Type species.

Flabellina babai Schmekel, 1972.

Etymology.

Named to honour an eminent expert of nudibranchs, Luise Schmekel, who named Flabellina babai and authored the well-recognised monograph Opisthobranchia des Mittelmeeres.

Diagnosis.

Body narrow. Notal ridge completely absent. Cerata in several distinct rows. Rhinophores perfoliated, shorter than oral tentacles. Anterior foot corners present. Anus mixed: pleuroproctic shifted towards dorsal acleioproctic position. Rachidian teeth with narrow compressed cusp and distinct denticles. Lateral teeth denticulated with attenuated process basally. Proximal tubular receptaculum seminis. Moderately long vas deferens widened distally, prostate distinct, granulated. No external penial collar. Penis bluntly conical.

Species included.

Luisella babai (Schmekel, 1972), comb. n. (original description in Schmekel 1972).