A new Pacific Ocean species of Typhlonida Macpherson & Baba, 2022 (Crustacea, Decapoda, Munididae) from the flank of the emergent seamount Isla del Coco (Costa Rica) with notes on the phylogeny of the genus

By

Dong, Dong
Seid, Charlotte
Li, Xinzheng
Rouse, Greg W

Type

Article

Date of Publication

2025-2-26

Original Publication

Zoosystematics and evolution

Volume

101

Series / Issue

Issue: 2

Pages

473--483

Subjects

eastern Pacific , Phylogeny , Squat lobsters , taxonomy , Typhlonida

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft

Identifiers

DOI: https://doi.org/10.3897/zse.101.144042

 

Abstract

The genus Typhlonida Macpherson & Baba in Machordom et al. 2022 is a group of munidid squat lobsters typically found in deep waters. This study describes and illustrates a new species, Typhlonida cocoensissp. nov., from a seamount area in the eastern Pacific. Typhlonida cocoensissp. nov. is closely related to T. sanctipauli (Henderson, 1885) but can be readily distinguished from the latter by its relatively small eyes, narrow anterior margin of the thoracic sternite 4, lack of granules on the lateral surfaces of sternite 7, and unarmed anterior branchial regions dorsally. In addition to morphological comparisons, genetic distance and phylogenetic analyses were used to support the recognition of this new species. The phylogenetic positions of the Typhlonida and Antillimunida species from the eastern Pacific are discussed.