This species is distinguished from its congeners by the following set of characters: male genital papilla with two widely separated slender filaments to either side of the gonopore, type I sensu Williams (1988); nuchal cirri is divided into two, rarely three or four, groups always slightly separated dorsally on nape with bases swollen beneath ventralmost cirri on either side; overall shape of the transverse row of nuchal cirri modally type I and sometimes type II (types C and G sensu Williams), with 32-38 independently based cirri; dorsal separation in row of nuchal cirri 0.1-0.7 mm (median width 0.3 mm); where interrupted laterally, lateral breaks in the row of nuchal cirri 0-0.4 mm in width (median width 0 mm); sensory pore structure is directly posterior to lateral center of row of nuchal cirri type I, posterior and parallel to row of nuchal cirri, does not visibly penetrate through break (where present); 0-6 distinct LLT. Colouration: when alive, head commonly bright reddish orange on upper section with bright red spots and/or slashes extending dorsally and posteriorly from the snout and the outer ring of iris bright orange-red (Ref. 123088).