Odontonia plurellicola sp. n. and Odontonia bagginsi sp. n., two new ascidian-associated shrimp from Ternate and Tidore, Indonesia, with a phylogenetic reconstruction of the genus (Crustacea, Decapoda, Palaemonidae)

By

de Gier, Werner
Fransen, C. H. J. M.

Type

Article

Date of Publication

2018

Original Publication

ZooKeys

Volume

765

Pages

123-160

Subjects

Ascidians , Caridea , new species , Odontonia , Palaemonidae , Symbiosis , Ternate , Tidore

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.765.25277

 

Abstract

Two new species of palaemonid shrimp associated with ascidian hosts,Odontoniabagginsisp. n.from Tidore andOdontoniaplurellicolasp. n., from Ternate, Indonesia are described and figured. Through phylogenetic analyses based on both morphological and molecular datasets (mitochondrial Cytochrome c oxidase subunit I gene and the 16S mitochondrial ribosomal gene) of the genusOdontonia, the phylogenetic positions of the new species have been reconstructed. Scanning Electron Microscopy has been used to observe additional characters on dactyli of the ambulatory pereiopods.Odontoniaplurellicolasp. n.appears to be more closely related toO.simplicipesandO.seychellensis, but it differs most notably in the morphology of the rostrum and mouthparts.Odontoniaplurellicolasp. n.appears to be the onlyOdontoniaspecies living inside a phlebobranch ascidianPlurellasp.Odontoniabagginsisp. n.is closely related toO.sibogae, but differs markedly in the abundance of setae on the propodi of the ambulatory pereiopods. In the present paper,O.maldivensisFransen, 2006 is regarded as a junior synonym ofO.rufopunctataFransen, 2002 based on both morphological and molecular aspects.