Description of two new species of Rissoella Gray, 1847 (Mollusca, Gastropoda, Heterobranchia) from Venezuela, with a key to the Caribbean species known for the genus

Abstract

Two new species of the genus Rissoella Gray, 1847 are described from Venezuela, one from the National Park Morrocoy, Rissoella morrocoyensis sp. n. and the other from the Wildlife Refuge Isla de Aves, Rissoella venezolanicola sp. n. Rissoella morrocoyensis sp. n. has a deep umbilicus (partly closed), preumbilical cord, black head, hypobranchial gland marked by a pale yellow boomerang-shaped ribbon and it lives on the leaves of the seagrass Thalassia testudinum Banks & König, 1805. Rissoella venezolanicola sp. n. has an angled preumbilical cord which extends to the columella delimiting a trapezoid, a hypobranchial gland marked by a yellow quaver-shaped ribbon and protoconch with fuchsia highlights. It lives on the brown alga Dictyota spp. The records of Rissoella in the Caribbean are revised and illustrations, a comparative table and a key to the Caribbean species known for the genus are provided.

Remarks on “Two new species of Tornidae (Caenogastropoda, Rissooidea) from Espírito Santo, Brazil,” by Luiz Ricardo Simone (ZooKeys 238: 77–85, 2012) and a plea for improvement in ZooKeys editorial policy

“…The only two other papers in ZooKeys that are on non-opisthobranch shelled marine gastropods (Caballer et al 2011; Dornellas 2012) also show editing lapses. In the paper by Caballer et al (2011) the abstract is difficult to read because several sentences begin with abbreviations.…”

“…In the paper by Caballer et al (2011) the abstract is difficult to read because several sentences begin with abbreviations. Two sentences (p. 1), in part, are: “… Rissoella venezolanicola sp.n.…”