WoRMS taxon details

Octomeris intermedia Nilsson-Cantell, 1921

1363438  (urn:lsid:marinespecies.org:taxname:1363438)

accepted
Species
marine
Nilsson-Cantell, C. A. (1921). Cirripeden Studien. Zur Kenntnis der Biologie, Anatomie und Systematik dieser Gruppe. <em>Zool. Bidrag Uppsala.</em> 7: 75-390., available online at https://www.biodiversitylibrary.org/page/11115190#page/9/mode/1up [details]   
WoRMS (2022). Octomeris intermedia Nilsson-Cantell, 1921. Accessed at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1363438 on 2022-09-30
Date
action
by
2019-08-01 16:56:19Z
created
2020-02-25 08:25:42Z
changed

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


original description Nilsson-Cantell, C. A. (1921). Cirripeden Studien. Zur Kenntnis der Biologie, Anatomie und Systematik dieser Gruppe. <em>Zool. Bidrag Uppsala.</em> 7: 75-390., available online at https://www.biodiversitylibrary.org/page/11115190#page/9/mode/1up [details]   
From editor or global species database
Additional information Octomeris intermedia Nilsson-Cantell, 1921, identified from the Mergui Archipelago in Myanmar, was considered to be conspecific with O. brunnea by Hiro (1939) based on samples collected in Taiwan. The morphological differences in shell and opercular plates between O. brunnea and O. intermedia are believed to be intra-specific variations due to different degrees of shell erosion. In Chan et al. (2020), the genetic and morphological differentiation of Octomeris in the Indo-Pacific region were examined. This study found two molecular clades (with inter-specific differences) based on the divergence in the COI genes, and the species also have distinct geographical distributions. The Octomeris brunnea clade covers samples collected from the Philippines and Taiwan waters and the other clade, which we argue is O. intermedia, is distributed in Phuket and Krabi, Thailand and Langkawi, Malaysia. Phuket and Krabi are located approximately 300 km south of the Mergui Archipelago, the type locality of O. intermedia. The morphology of samples collected from Thailand fits the type description of O. intermedia in Nilsson-Cantell (1921). Chan et al (2020) concludes that O. intermedia is a valid species based on morphological and molecular evidence. [details]