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| flatworms text index | photo index |
| worms > Phylum Platyhelminthes > Class Turbellaria > Order Polycladida |
| Blue-lined
flatworm Pseudoceros concinnus* Family Pseudocerotidae updated Feb 2020 Where seen? This small pale flatworm elegantly edged in blue with a central blue stripe is regularly encountered on many of our shores, on coral rubble near living reefs. 'Concinnus' means 'elegant' in Latin. Features: 2-4cm long. Body creamy-white to bluish-creamy-white. Two fine blue lines in the centre, which are usually so close to one another that they appear to be one solid blue line. In between the two fine blue lines, is the body colour. Has a pair of pseudotentacles made up of simple folded edges of the body. Sometimes mistaken for similar flatworms. Here's more on how to tell apart small flatworms with one central line and three central lines. Good mother: One study has found this worm to display long-term parental care. |
 Sentosa, May 08 |
 Pseudotentacles simple fold. |
 Two fine blue lines in the centre. Pulau Semakau, Sep 05 |
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*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.
| Blue-lined flatworms on Singapore shores |
On wildsingapore
flickr
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| Other sightings on Singapore shores |
 Pulau Sekudu, Jul 19 Photo shared by Loh Kok Sheng on facebook. |
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 East Coast (PCN), May 21 Photo shared by Vincent Choo on facebook. |
 Pulau Biola, Dec 09 |
 Pulau Biola, May 10 |
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blue-lined flatworm @ pulau hantu 17Apr2010 from SgBeachBum on Vimeo. |
Blue-lined flatworm gliding (Cyrene), Jun 12 Blue-lined flatworm gliding |
| Acknowledgement With grateful thanks to Leslie H. Harris of the Natural History Museum of Los Angeles County for comments on this worm and its identification. Grateful thanks to Rene Ong for sharing details and identifying the flatworms on this page. References
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