Coryphella trilineata

Three-lined aeolid
Coryphella trilineata
Coryphella trilineata, Vancouver Island, Canada, Photo: Em Lim

Distribution


Description

Three white lines run along the top of the translucent body forming a 'Y' shape down the oral tentacles, although may be absent in juveniles. Red-orange cerata are in isolated clumps, and rhinophores and oral tentacles may be white, translucent, or with orange accents toward the tips. Unlike similar species Hermissenda crassicornis cerata are not lined with white, are often uniformly orange in colour, or red with orange tips. 


Information

Max Size: N/A cm

Sea Temperature Range: N/A

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: Frequent (14.0% 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: Several (7 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.