Project

Flatworms

  • 95 Members
  • 296 Sightings
  • 0 Posts

The flatworms, known as Platyhelminthes are a phylum of fascinating, simple bilaterian, unsegmented, soft-bodied invertebrate animals. Unlike other bilaterians, they have no body cavity, and no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening for both the ingestion and expulsions of undigested wastes) -this means that food cannot be processed continuously. Platyhelminthes are divided into Turbellaria, which are mostly nonparasitic animals such as planarians, and three entirely parasitic groups: Cestoda, Trematoda and Monogenea. Free-living flatworms are mostly predators, and live in water or in shaded, humid terrestrial environments such as leaf litter. We are fortunate to have as a member of BowerBird, Dr Leigh Winsor from the Jame Cook University at Townsville who is a free-living flatworm expert. Leigh is most keen for members to find and upload images of flatworms. He would also like from time to time for members to collected into alcohol flatworms they find which will be used in his DNA analysis of this difficult group of animals.

  • Dr Leigh Winsor described a sighting

    Sighting Caenoplana coerulea complex Flatworm

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    1 ids
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    Sighted 25 Aug 2018
    Dr Leigh Winsor 29 August 2018
    Dr Leigh Winsor says

    Nice photos Ken. I agree with you that this is one of the Caenoplana coerulea complex. It looks fairly typical and has a reddish anterior tip. It should be a cobalt blue colour on the under-surface. Do you know whether the potted plants were obtained locally, or from elsewhere? I have records of the species from a nursery in Maffra. Your comment on the colour change is interesting, though I am unable to explain why the different colour.

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  • Ken Harris identified a sighting

    Sighting Caenoplana coerulea complex Flatworm

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    1 ids
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    Sighted 25 Aug 2018
    Ken Harris 25 August 2018
    Platyhelminthes
    (phylum)
    Taxonomy: Animalia: Platyhelminthes
    Ken Harris says

    When first found under a plant plot it was quite a bright blue, but by the time I was shown it it had become an extremely deep blue.

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  • Ken Harris added a sighting

    Caenoplana coerulea complex Flatworm

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    Sighted 25 Aug 2018
    647 Marathon Rd, Briagolong VIC 3860, Australia

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  • Rose Robin described a sighting

    Sighting Flatworm, Caenoplana bicolor

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    2 ids
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    Sighted 29 Jun 2018
    Rose Robin 8 August 2018
    Tagged With caenoplana bicolor
    Rose Robin says

    Thank you Dr. Leigh, great to have this id!

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  • Dr Leigh Winsor described a sighting

    Sighting Small Flatworm w 2 Bold Stripes (Artioposthia?)

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    1 ids
    3 notes
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    Sighted 21 Jul 2018
    Dr Leigh Winsor 6 August 2018
    Tagged With good hunting!
    Dr Leigh Winsor says

    Great photos - as always - of some very interesting land planarians. Further north you will start finding small rhynchodemids (2 eyes) in the dry country. More interesting taxa around Eungella near Mackay if you are going that far.

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  • Dr Leigh Winsor described a sighting

    Sighting Grey Flatworm with Yellow & Brown Stripes

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    Sighted 29 Jul 2018
    Dr Leigh Winsor 6 August 2018
    Dr Leigh Winsor says

    These photos clearly show one of the variations in the depth of the blue-brown ground colour in Caenoplana bicolor, which here is more of a blue-grey colour. As usual, the typical mid dorsal stripes are conserved. Nice photos of an interesting specimen! This planarian originates in SE Queensland and was described from specimens collected in the Upper Mary River area.

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  • Dr Leigh Winsor identified a sighting

    Sighting Grey Flatworm with Yellow & Brown Stripes

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    1 faves
    1 ids
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    Sighted 29 Jul 2018
    Dr Leigh Winsor 6 August 2018
    Rhabditophora
    (class)
    Taxonomy: Animalia: Platyhelminthes: Rhabditophora
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  • Dr Leigh Winsor described a sighting

    Sighting Small Blue Bunya Flatworm

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    2 faves
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    Sighted 28 Jul 2018
    Dr Leigh Winsor 6 August 2018
    Dr Leigh Winsor says

    Great photos of Parakontikia ventrolineata in its home territory in SE Queensland - your photos show all the key diagnostic features. Fr om there it has been spread via the nursery trade to NZ, Norfolk Island, USA, the UK and Europe. It often travels with "Caenoplana coerulea". It was originally described in 1892 from Brunnings Nursery Garden, St Kilda, Melbourne.

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  • Dr Leigh Winsor identified a sighting

    Sighting Small Blue Bunya Flatworm

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    2 faves
    1 ids
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    Sighted 28 Jul 2018
    Dr Leigh Winsor 6 August 2018
    Rhabditophora
    (class)
    Taxonomy: Animalia: Platyhelminthes: Rhabditophora
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  • Reiner Richter added a sighting

    Grey Flatworm with Yellow & Brown Stripes

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    Sighted 29 Jul 2018
    3409 Bunya Mountains Rd, Bunya Mountains QLD 4405, Australia

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