Pseudobiceros hymanae
Hymans flatworm
Distribution
Description
Elongated body up to 45mm in length, and 10mm wide. Pseudotentacles are square with margins and distinctly different to similar species Callioplana marginata. Background colour is black to purple, with wider orange inner margin, and thinner black outermost margin, versus white outermost margin in C. marginata.
Significantly paler specimens have been seen in Singapore Strait, with background colour pinkish - orange.
Information
Max Size: 7 cm
Sea Temperature Range: 18.5-22.7°C
Depth: N/A
Habitat Generalization Index: N/A
Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.
Conservation and Rarity
IUCN Status: Not Evaluated
Occurrence: Infrequent (3.5% of sites)
Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
Abundance: Solitary (1 per transect)
Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: Jo Schmid