User login

Integrative taxonomy helps separate four species of freshwater shrimps commonly overlooked as Caridina longirostris (Crustacea: Decapoda: Atyidae) in Indo-West Pacific islands.

TitleIntegrative taxonomy helps separate four species of freshwater shrimps commonly overlooked as Caridina longirostris (Crustacea: Decapoda: Atyidae) in Indo-West Pacific islands.
Publication TypeJournal Article
Year of Publication2018
Authorsde Mazancourt, V, Marquet, G, Klotz, W, Keith, P
JournalInvertebrate systematics
Volume32
Pagination1422–1447
Keywords16S rRNA, Indo-Pacific region, morphology
Abstract

Caridina longirostris H. Milne Edwards, 1837 described from specimens supposedly from La Macta River

near Oran, Algeria, is an emblematic species of the ‘C. nilotica complex’. Until now this species was thought to have

a wide distribution in the Indo-Pacific region. Recently, numerous specimens identified as C. longirostris were collected

from various Indo-West Pacific localities. In the context of integrative taxonomy, both old and newly collected specimens

were morphologically and genetically studied. Four species allied to C. longirostris are here identified: C. appendiculata

Jalihal & Shenoy, 1998, C. brevidactyla Roux, 1920, C. gracilipes De Man, 1892 and C. meridionalis Roux, 1926.

Detailed re-descriptions of these four species are given as well as their geographical and ecological distributions. Caridina

nilotica var. brevidactyla is revalidated as the species C. brevidactyla, and C. coulaborensis Richard&Clark, 2014, C. fritzi

Richard & Clark, 2014 and C. solamulieres Richard & Clark, 2014 are considered junior synonyms of C. meridionalis.

The position of these species in the troublesome ‘C. nilotica complex’ is clarified and some species are synonymised.

A key is provided to facilitate identification.