Monday, January 8, 2024

[Crustacea • 2024] Garymunida namora, Trapezionida macilenta, T. pulex, etc. • DNA Barcoding and Morphology revealed the Existence of Seven New Species of Squat Lobsters in the Family Munididae (Decapoda: Galatheoidea) in the southwestern Pacific


A Trapezionida macilenta sp. nov., male holotype, Papua-New Guinea
B Trapezionida pulex sp. nov., ovigerous female paratype, New Caledonia.

Macpherson, Rodríguez-Flores & Machordom, 2024
 
Abstract
Specimens of squat lobsters belonging to the family Munididae Ahyong et al., 2010, representing the genera Garymunida Macpherson & Baba, 2022, Trapezionida Macpherson & Baba, 2022 and Typhlonida Macpherson & Baba, 2022, were collected during several cruises around New Caledonia and Papua New Guinea, Southwest Pacific. The integrative study of these specimens revealed the presence of one new species in Garymunida, five in Trapezionida and one in Typhlonida. We describe and illustrate these new species, providing some new data on the taxonomy of several rare or scarcely studied species of Trapezionida. Molecular data from different markers (mitochondrial and nuclear) was also included, based on data availability, to support the taxonomic status of different species. Finally, a key to species for each genus is also provided.

Key words: Crustacea, integrative taxonomy, molecular characters, morphology, Pacific Ocean


Superfamily Galatheoidea Samouelle, 1819
Family Munididae Ahyong, Baba, Macpherson & Poore, 2010

Genus Garymunida Macpherson & Baba, 2022 in Machordom et al. 2022

 Garymunida namora sp. nov.

Etymology: "Namora" is a mythological woman participating in the creation of New Guinea. Used as noun in apposition.


Genus Trapezionida Macpherson & Baba, 2022 in Machordom et al. 2022

 Trapezionida brachytes (Macpherson, 1994)

 Trapezionida leptitis (Macpherson, 1994)

 Trapezionida brevitas sp. nov.

Etymology: From the Latin, brevitas, shortness, in reference to the small size of the species.

 Trapezionida diluta sp. nov.

Etymology: From the Latin, dilutus, thin, in reference to the shape of the antennular peduncle.

Colour in life A Trapezionida macilenta sp. nov., male holotype, 5.7 mm (MNHN-IU-2013-1094), Papua-New Guinea
B Trapezionida pulex sp. nov., ovigerous female paratype, 4.4 mm (MNHN-IU-2013-1882), New Caledonia.

 Trapezionida macilenta sp. nov.

Etymology: From the Latin, macilentus, thin, in reference to the long and slender antennular peduncle.

 Trapezionida microtes sp. nov.

Etymology: From the Greek, mikrossmall, in reference to the small size of the species.


 Trapezionida pulex sp. nov.

Etymology: From the Latin, pulexflea, in reference to the small size of the species.


Genus Typhlonida Macpherson & Baba, 2022 in Machordom et al. 2022

 Typhlonida eluminata sp. nov.

Etymology: From the Latin, eluminatus, blinded, in reference to the small eyes.


Enrique Macpherson, Paula C. Rodríguez-Flores and Annie Machordom. 2024. DNA Barcoding and Morphology revealed the Existence of Seven New Species of Squat Lobsters in the Family Munididae (Decapoda, Galatheoidea) in the southwestern Pacific. ZooKeys. 1188: 91-123. DOI: 10.3897/zookeys.1188.114984