Hi Everyone,

A recent study, Layton & Wilson 2024, has split Chromolaichma sedna (Marcus & Marcus, 1967):
C. sedna: eastern Pacific
C. hemera: western Atlantic

More over, the authors discover ''extensive phylogeographic structure within C. hemera sp. nov. sensu lato, thereby refuting the hypothesis of a recent introduction'' and found ''significant rate heterogeneity among marine invertebrate genera that share a similar lifespan, reproductive mode and dispersal potential, suggesting that life history traits do not drive differences in mitochondrial rates''.

The new taxon was created on iNat and here is the paper:
Layton, K. K. S.; Wilson, N. G. (2024). Validating a molecular clock for nudibranchs—No fossils to the rescue. https://doi.org/10.1002/ece3.11014

Enjoy reading!

@jeffgoddard @anudibranchmom @tgosliner @jpsilva @erwinkoehler @b_eddy @coralreefdreams @zahnerphoto @djscho

Hi Everyone,

A recent study, first-time molecular evidence of all Pleurobranchida genera, brought some news and name changes:

1. A new genus Tomoberthella:
   Berthella martensi is now moved to Tomoberthella martensi

2. The North Pacific Berthella clade transferred to Boreoberthella:

   • Berthella californica is now Boreoberthella californica
   • Berthella chacei is now Boreoberthella chacei

3. The Berthella stellata group transferred to Pleurehdera:

   • Berthella andromeda is now Pleurehdera andromeda
   • Berthella nebula is now Pleurehdera nebula
   • Berthella pellucida is now Pleurehdera pellucida
   • Berthella postrema is now Pleurehdera postrema
   • Berthella stellata is now Pleurehdera stellata
   • Berthella strongi is now Pleurehdera strongi
   • Berthella vialactea is now Pleurehdera vialactea

I changed them automatically, so you don’t have to do anything.

Moles, J., Brenzinger, B., Berning, M., Martynov, A., Korshunova T. & Schrödl, M. (2023). Systematic rearrangements in an all-genus phylogeny of side-gilled slugs (Heterobranchia: Pleurobranchida).
Here is the link to the paper: https://doi.org/10.1093/zoolinnean/zlad162

@tgosliner @jpsilva @erwinkoehler @profmollusc @marinejanine

Three name changes - ‘’The North Pacific Berthella clade transferred to Boreoberthella, and the Berthella stellata group to Pleurehdera’’:

• Berthella californica is now Boreoberthella californica
• Berthella chacei is now Boreoberthella chacei
• Berthella strongi is now Pleurehdera strongi

I changed them automatically, so you don’t have to do anything.

Moles, J., Brenzinger, B., Berning, M., Martynov, A., Korshunova T. & Schrödl, M. (2023). Systematic rearrangements in an all-genus phylogeny of side-gilled slugs (Heterobranchia: Pleurobranchida).
Here is the link to the paper: https://doi.org/10.1093/zoolinnean/zlad162

@tgosliner @anudibranchmom @jeffgoddard @lutea11 @jpsilva @juliabohemian @erwinkoehler

Hi Everyone,

After Phestilla subodiosa, another Acroporidae coral eating nudibranch has been described.

Mehrotra, R.; Caballer, M.; Kaullysing, D.; Jualaong, S.; Hoeksema, B. W. (2024). Parasites or predators? Gastropod ectoparasites and their scleractinian host corals at Koh Tao, Gulf of Thailand, with the description of a new species. https://doi.org/10.1007/s13199-023-00967-z

Enjoy reading!

Hi Everyone,

The genus Okenia includes most of the synonymized genera in Goniodorididae. The validity of synonyms has been re-evaluated in light of the available molecular data recently and 3 old genera Bermudella, Cargoa, and Ceratodoris are resurrected and a new genus, Naisdoris gen. nov., is described. Then, some moved into Goniodoridella.

Paz-Sedano, S.; Moles, J.; Smirnoff, D.; Gosliner, T. M.; Pola, M. (2023). A combined phylogenetic strategy illuminates the evolution of Goniodorididae nudibranchs (Mollusca, Gastropoda, Heterobranchia). Molecular Phylogenetics and Evolution. 107990. https://doi.org/10.1016/j.ympev.2023.107990

Enjoy reading!

@bernardpicton @jeffgoddard @anudibranchmom @tgosliner @jpsilva @erwinkoehler @v_stefan @juliabohemian @passiflora4 @nudibitch @kueda @lutea11

Hi Everyone,

Part of Goniodoridella savignyi complex has finally been studied and three new species G. geminae n. sp., G. serrata n. sp. and G. unidonta n. sp. are described.

Paz-Sedano, S.; Ekimova, I.; Smirnoff, D.; Gosliner, T. M.; Pola, M. (2023). Shedding light on a species complex within the genus Goniodoridella Pruvot-Fol, 1933 (Nudibranchia: Goniodorididae), with the description of three new species. Journal of Molluscan Studies. 89(4). https://doi.org/10.1093/mollus/eyad020

Enjoy reading!