Other Invertebrates

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An introduction to Invertebrates:

https://australianmuseum.net.au/learn/teachers/learning/what-are-invertebrates/

Marine invertebrates are included in their own category.

Other Invertebrates

Molluscs (Mollusca)

Segmented Worms (Annelida)

Flatworms (Platyhelminthes)

Velvet worms or Peripatus (Onychophora)

Other worms

Proboscis or Ribbon Worms (Nemertea)

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Discussion

Michael123 wrote:

13 May 2025

BTW an onycophoran (Velvet Worm) is also pictured

Oxychilus alliarius

Michael123 wrote:

13 May 2025

Hi Trevor, the whorl coiling pattern more resembles Oxychilus alliarus (to 7mm) rather than the larger O. cellarius (to 11mm) however it could even be an immature O. draparnaudi (to 16mm) which has a similar coiling pattern to the photographed snail and has been recorded from Canberra.

Oxychilus alliarius

Michael123 wrote:

13 May 2025

Very interesting, not really sure which species this is. Pretty sure it belongs to the genus Parmavitrina but which species I am not sure. Parmavitrina rubrica (Shea and Griffiths, 2010) is found in that general area however it has a brick red coloured animal not black. I once found a similar large black coloured semi slug at Yarrahappinni which is within the range of Parmavitrina planilabris found on the mid north coast of NSW. It is possible that the snails in the Parmavitrina genus may have more than one colour form within species populations. That is the best I can do I am afraid.
Just a request Warrigal/Trevor, could you please post this in the 'Snails of Australasia' Facebook group ? that way we could get some more feedback and identification suggestions. Cheers, Michael

Unverified Snail or Slug (Gastropoda)

trevorpreston wrote:

12 May 2025

These seemed a bit bigger than specimens i have seen in Canberra, probably 8-10mm at an estimate.

Oxychilus alliarius

MazzV wrote:

12 May 2025

Thanks @Michael123, for the suggesting what it might be, & appreciate the challenges!

Ubiquitarion iridis