Two new species of
Aberranta Hartman, 1965 are described from southeast France and Hong Kong, China. The two previously known species,
A. enigmatica Hartman, 1965 and
A. palpata Wolf, 1987 are redescribed from type and other material.
Aberranta banyulensis n. sp. resembles
A. palpata, and its internal and external morphology are examined further using histological, transmission and scanning electron microscopic techniques.
Aberranta sulcata n. sp. is morphologically closest to
A. enigmatica. The relationships between
Aberranta and other polychaetes are discussed in light of a recent morphological and molecular analysis involving Nerillidae and Aciculata. The relationships among the
Aberranta species are examined in a morphology-based cladistic analysis, using an amphinomid and three nerillids as outgroups.