Thorunna australis
(Risbec, 1928)
Photographed by: Yuji Law
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Opisthobranchia |
| Order: | Nudibranchia |
| Suborder: | Doridina |
| Family: | Chromodorididae |
| Species: | Thorunna australis |
Comment from Richard Willan on photo #4652
The colouration on the rhinophores (red with a white apex) distinguishes this species from Hypselodoris maculosa.Comment from Richard Willan on photo #4618
In contrast, Hypselodoris maculosa would have two red rings around the rhinophores.Comment from Richard Willan on photo #2494
See my comments about this species in the preceding set of photos today.Comment from Richard Willan on photo #2277
This is not a juvenile individual of Hypselodoris maculosa, but a different species characterised by the completely red rhinophores (2 red rings in Hypselodoris maculosa) and ring of purple spots around the mantle margin (absent in Hypselodoris maculosa). I wonder if Thorunna australis is a group of species rather than just one species because it is extremely variable. This is an excellent photo.Comment from Richard Willan on photo #775
Not a typical individual (see explanation in the photo from Lembeh). This could well be an undescribed species.Comment from Richard Willan on photo #583
A typical individual. See how different this individual is to the one from Ambon and this one from Bali, that’s why I suggested this is really a group of species not just one.Comment from Richard Willan on photo #198
This may be a complex of several different species.Locality:
- Indonesia
- Australia
- Queensland (1)
- Nelson Bay (1)
- PNG
- PNG (1) Oct
Pictures of Thorunna australis
Similar Species
Author: Erwin Kodiat
Hypselodoris maculosa has 2 orange rings on the rhinophores, white longitudinal lines, purple spots, and white speckles while Thorunna australis has ring of purple spots around the mantle margin.
