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worms > Phylum Platyhelminthes > Class Turbellaria > Order Polycladida
Elegant striped flatworm
Pseudoceros concinnus*
updated Oct 2016

Where seen? This small flatworm elegantly edged in blue with a 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. There is a pair of erect pseudotentacles at the front made up of folded edges of the body, although not always obvious.

Grouped in this entry are flatworms with a generally bluish white or beige body with a bright blue margin and one blue stripe along the length of the body. The line ends with a little blue circle-dot near the head. In some the blue stripe along the middle of the body as yellow or white centre. They don't ruffle the edges of their bodies as much as other flatworms do. It is possible that these are different species.

With a solid blue line.
Sentosa, May 08

With a blue-and-yellow line.
Pulau Semakau, Sep 05

With a blue-and-yellow line.
Chek Jawa, Oct 03

Little blue circle-dot at the head.


Sentosa, Sep 11
Photo shared by Marcus Ng on flickr.
 

*
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

Photos of Blue-lined flatworms for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map


Chek Jawa, Oct 10
Photo shared by Neo Mei Lin on her blog.

Chek Jawa, Jan 14
Photo shared by Loh Kok Sheng on his blog.

Chek Jawa, Jul 13
Photo shared by Loh Kok Sheng on his blog.


Pulau Sekudu, Jul 16
Photo shared by Loh Kok Sheng on his blog.

Seringat-Kias, Aug 15
Shared by Loh Kok Sheng on his blog.


Lazarus, Feb 09
Shared by Loh Kok Sheng on his blog.

Lazarus, Jul 11
Shared by Loh Kok Sheng on his blog.

Lazarus, Jul 11
Shared by Loh Kok Sheng on his blog.


Kusu Island, May 16
Photo shared by Loh Kok Sheng on facebook.

Kusu Island, Jan 14
Photo shared by Loh Kok Sheng on his blog.


St. John's Island, Feb 11
Photo shared by Loh Kok Sheng on his blog.

St. John's Island, Sep 07
Photo shared by Loh Kok Sheng on his blog.


St. John's Island, Sep 07
Photo shared by Toh Chay Hoon on her flickr.

Pulau Jong, May 10
Photo shared by James Koh on his blog.

Terumbu Hantu, Jun 16
Photo shared by Rene Ong on facebook.


Pulau Hantu, Jun 10
Photo shared by Loh Kok Sheng on his blog.

Pulau Hantu, Jul 07
Photo shared by Loh Kok Sheng on his blog.

Raffles Lighthouse, Nov 16
Photo shared by Jianlin Liu on facebook.


Terumbu Bemban, Apr 11

Photo shared by Loh Kok Sheng on his blog.

Terumbu Pempang Tengah, May 11
Photo shared by Loh Kok Sheng on his blog.

Terumbu Pempang Laut, Apr 11
Photo shared by Loh Kok Sheng on his blog.


Pulau Semakau, Aug 11
Photo shared by Lok Kok Sheng on his blog.

Terumbu Semakau, May 10
Photo shared by James Koh on his blog.

Beting Bemban Besar, May 11
Photo shared by Loh Kok Sheng on his blog.


Pulau Biola, Dec 09

Pulau Biola, Dec 09
Photo shared by Loh Kok Sheng on his flickr.

Pulau Biola, Dec 09
Photo shared by Loh Kok Sheng on his flickr.


Pulau Salu, Jun 10

Pulau Biola, May 10

Pulau Senang, Jun 10
Photo shared by Loh Kok Sheng on his flickr.

blue-lined flatworm @ pulau hantu 17Apr2010 from SgBeachBum on Vimeo.



Blue-lined flatworm gliding (Cyrene), Jun 12
Blue-lined flatworm gliding

Blue-lined flatworm gliding (Cyrene)

Posted by Singapore Reef Watch on Thursday, 21 June 2012

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.

References
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