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Invertebrate Systematics Invertebrate Systematics Society
Systematics, phylogeny and biogeography
RESEARCH ARTICLE

Systematics of the genus Halgerda Bergh, 1880 (Heterobranchia : Nudibranchia) of Mozambique with descriptions of six new species

Yara Tibiriçá A B E , Marta Pola C and Juan Lucas Cervera B D
+ Author Affiliations
- Author Affiliations

A SeaLife Station, Zavora Beach s/n, Inharrime, 1114, Inhambane Province, Mozambique.

B Departamento de Biología, Facultad de Ciencias del Mar y Ambientales; Campus de Excelencia Internacional del Mar (CEI·MAR), Av. República Saharaui s/n, 11510 Puerto Real (Cádiz), Spain.

C Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid; Campus de Excelencia Internacional UAM+CSIC, C/Darwin, 2, 28049 Madrid, Spain.

D Instituto Universitario de Investigación Marina (INMAR), Campus de Excelencia Internacional del Mar (CEI·MAR) Universidad de Cádiz, Av. República Saharaui s/n, Ap. 40. 11510 Puerto Real (Cádiz), Spain.

E Corresponding author. Email: yara@zavoralab.com

Invertebrate Systematics 32(6) 1388-1421 https://doi.org/10.1071/IS17095
Submitted: 21 December 2017  Accepted: 4 July 2018   Published: 11 December 2018

Abstract

The species of the genus Halgerda Bergh, 1880, are restricted to the Indo-Pacific; some being common inhabitants of reefs off the coast of Mozambique. These species have been relatively well studied morphologically, but few molecular data are available. During a seven-year period surveying the reefs of Mozambique, 11 Halgerda spp. were collected, six of which are described here. We provide details on their morphology, anatomy, novel genetic markers and additional information about their colour variation. The new species described herein are Halgerda leopardalis, sp. nov., H. mozambiquensis, sp. nov., H. jennyae, sp. nov., H. meringuecitrea, sp. nov., H. nuarroensis, sp. nov. and H. indotessellata, sp. nov., the last of which was found to be a pseudocryptic species of H. tessellata. Moreover, we identified two species complexes, one composed mainly of specimens from the Western Indian Ocean and another with specimens mostly from the Pacific Ocean and Western Australia.

Additional keywords: biodiversity, DNA barcoding, Indo-Pacific, Mollusca, species delineation.


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