A new species of Cerapus (Amphipoda, Senticaudata, Ischyroceridae) from Mae Klong Estuary, with a discussion on their nesting and types of mating behaviour

By

Katnoum, Chanikan
Keetapithchayakul, Tosaphol Saetung
Abdul Rahim, Azman
Wongkamhaeng, Koraon

Type

Article

Date of Publication

2023

Original Publication

Zoosystematics and evolution

Volume

99

Pages

557--574

Subjects

Amphawa , Cerapus , mating behaviour , Nesting behaviour

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft

Identifiers

DOI: https://doi.org/10.3897/zse.99.107974

Rights Status

In copyright. Digitized with the permission of the rights holder.

Rights License URL

http://creativecommons.org/licenses/by/4.0

 

Abstract

The first representative of the genus Cerapus in the Gulf of Thailand, Cerapus rivulus sp. nov., is described from specimens sampled from Mae Klong Estuary, the inner Gulf of Thailand. The main identifying characteristics of this new amphipod species are pereonites 1 and 2 without constriction; male gnathopod propodus palm transverse with long posterior defining tooth and well-developed anterodistal recurved tooth adjacent to propodus articulation; pereopod 6 coxa without fine fringe setae ventrally, basis with setae on posterior margin; and telson with deep cleft. An updated identification key for the 25 known species in the genus is also presented. A discussion on their nesting and types of mating behaviour is provided.