Zoological Studies

Vol. 62, 2023

(update: 2023.7.26)

Identification of Phyllosoma Larvae of the Lobsters Acantharctus and Biarctus (Crustacea: Scyllaridae) from the SW Indian Ocean

Rebeca Genis-Armero1, Johan Groeneveld2,3, Sohana Singh2, Paul F. Clark4, Laure Corbari5, and Ferran Palero1,4,*

1Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Spain. *Correspondence: E-mail: crustomics@gmail.com (Palero)
E-mail: rebeca92grj@gmail.com (Genis-Armero)
2Oceanographic Research Institute, Durban, South Africa. E-mail: jgroeneveld@ori.org.za (Groeneveld); ssingh@ori.org.za (Singh)
3School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
4Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, England. E-mail: p.clark@nhm.ac.uk (Clark)
5UMR 7205 ISYEB, Équipe “Explorations, Espèces et Spéciations”, Muséum National d’Histoire Naturelle, Paris, France. E-mail: corbari@mnhn.fr (Corbari)

(Received 5 October 2022 / Accepted 29 April 2023 / Published 26 July 2023)
Communicated by Benny K.K. Chan

The accurate assignment of cryptic larvae to species-level is a key aspect of marine ecological research and can be achieved through integrated molecular and morphological studies. A combination of two mitochondrial markers (COI and 16S) and a detailed morphological analysis was used to identify phyllosoma larvae of slipper lobster (Scyllaridae) species collected during a survey in the SW Indian Ocean. Two morphotypes were tentatively assigned to Acantharctus ornatus and Biarctus pumilus, both genera for which the larval morphology was unknown. Morphological revision of an adult specimen used to generate the putative A. ornatus sequences in GenBank revealed that it was misidentified and corresponds to B. dubius. The final phyllosoma stage of B. pumilus and subfinal and final stages of A. ornatus were described, clarifying prior misidentifications in the literature. Scyllarid biodiversity in the SW Indian Ocean is underestimated and sampling of deeper water layers is recommended to complete current knowledge of species and larval stages present in the region.

Key words: SW Indian Ocean, South Africa, KwaZulu-Natal Bight, Phyllosomas, Morphological description

Citation: Genis-Armero R, Groeneveld J, Singh S, Clark PF, Corbari L, Palero F. 2023. Identification of phyllosoma larvae of the lobsters Acantharctus and Biarctus (Crustacea: Scyllaridae) from the SW Indian Ocean. Zool Stud 62:33. doi:10.6620/ZS.2023.62-33.