Ophryotrocha schubravyi Tzetlin, 1980

Paxton, Hannelore & Åkesson, Bertil, 2010, The Ophryotrocha labronica group (Annelida: Dorvilleidae) — with the description of seven new species, Zootaxa 2713, pp. 1-24 : 12

Ophryotrocha schubravyi Tzetlin, 1980

Table 1

Ophryotrocha schubravyi Tzetlin, 1980: 666 , fig. 1.

Diagnosis. Prostomium with moderately long antennae, palps absent; two eyes medially connected; parapodia uniramous, lacking dorsal and ventral cirri; with dorsal protrusion; supra-acicular simple chaetae and subacicular falcigers; pygidium with two cirri, pygidial median stylus absent in adults; anterior edge of mandibles with 21 teeth, maxillae with falcate P1-forceps, bidentate P2-forceps, K-forceps right bidentate left falcate; gonochoristic; chromosomes 2n = 8; diameter of eggs 120 µm; released larvae without parapodia, with long pygidial median stylus.

Remarks. This species, only known from its original description, appears to be a typical member of the O. labronica group. The antennae of O. schubravyi are slightly longer than in most members of the group and its only distinguishing characteristic is that its diploid number of chromosomes is reported as 8.

Distribution. Ophryotrocha schubravyi was discovered in a marine aquarium in Moscow and it is not known from where it was introduced.