Cryptorchestia ruffoi sp.n. from the island of Rhodes (Greece), revealed by morphological and phylogenetic analysis (Crustacea, Amphipoda, Talitridae)

A new Cryptorchestia species, Cryptorchestia ruffoi Latella & Vonk, sp. n. from the island of Rhodes in south-eastern Greece, can be distinguished on the basis of morphological and phylogenetic data. Mor- phological analysis and DNA sequencing of mitochondrial and nuclear protein-coding genes in...

Full description

Bibliographic Details
Main Authors: DAVOLOS, DOMENICO, DE MATTHAEIS, Elvira, Latella, Leonardo, Vonk, Ronald
Other Authors: Davolos, Domenico
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
biogeography
freshwater
Greek island
molecular phylogeny
taxonomy
Lowry
Northeast Atlantic
Online Access:http://hdl.handle.net/11573/961054
https://doi.org/10.3897/zookeys.@@.11252
Description
Summary:A new Cryptorchestia species, Cryptorchestia ruffoi Latella & Vonk, sp. n. from the island of Rhodes in south-eastern Greece, can be distinguished on the basis of morphological and phylogenetic data. Mor- phological analysis and DNA sequencing of mitochondrial and nuclear protein-coding genes indicated that this species is related to C. cavimana (Cyprus) and C. garbinii (Mediterranean regions, with a recent northward expansion). Results supported a genetic separation between the Cryptorchestia species of the east Mediterranean regions and those of the northeast Atlantic volcanic islands examined in this study (C. canariensis, C. gomeri, C. guancha, and C. stocki from the Canary islands, C. monticola from Madeira, and C. chevreuxi from the Azores). The Mediterranean and Atlantic Cryptorchestia species appear to be also morphologically distinct. Cryptorchestia ruffoi sp. n., C. cavimana, C. garbinii, and C. kosswigi (Turkish coast) clearly have a small lobe on the male gnathopod 1 merus. This character was the main diagnostic difference between Cryptorchestia (sensu Lowry, 2013) and Orchestia. However, among the six northeast Atlantic island Cryptorchestia species only C. stocki has a small lobe on the merus of gnathopod 1. Reduc- tion or loss of the lobe in the Atlantic Island species cannot be ruled out; however, molecular phylogenetic analysis leads us to presume that this lobe independently evolved between the east Mediterranean Cryp- torchestia species and C. stocki from Gran Canaria.

Similar Items