Discovery of Neonrosella vitiata (Darwin) and Newmanella spinosus Chan & Cheang (Balanomorpha, Tetraclitidae) from the Andaman Sea, eastern Indian Ocean

By

Sukparangsi, Woranop
Pochai, Ashitapol
Wongkunanusorn, Chinnakit
Khachonpisitsak, Salinee

Type

Article

Date of Publication

2019

Original Publication

ZooKeys

Volume

833

Pages

1-20

Subjects

acorn barnacle , Cirripedia , Crustacea , Newmanellinae , Sessilia

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.833.30689

 

Abstract

In this present study, distantly related acorn barnacle species in the subfamily Newmanellinae (Cirripedia, Thoracica, Tetraclitidae), includingNeonrosellavitiata(Darwin, 1854) andNewmanellaspinosusChan & Cheang, 2016, were discovered in the Andaman Sea of Thailand.Neo.vitiatacan be readily distinguished from other newmanellids by shell plate and operculum morphology (external shell, tergum geometry, and pattern of parietal tube) and arthropodal characters (presence of basi-dorsal point at base of penis and triangular spines on cirri, setal type, and mouth parts). Both species were found to share overlapping territories on rocks at the rockweed zone, an area submerged under seawater most of the time throughout the year. This study highlights the first discovery ofNeonrosellain the eastern Indian Ocean, whose ultrastructure compared toNewmanellais redescribed and illustrated here based on scanning electron microscopy.