A reassessment of the phylogenetic utility of genus-level morphological characters in the family Bogidiellidae (Crustacea, Amphipoda), with description of a new species of Eobogidiella Karaman, 1981

Dmitry A. Sidorov, Aron D. Katz, Steven J. Taylor, Mikhail V. Chertoprud

Research output: Contribution to journalArticle

Abstract

Bogidiellidae is the most diverse and cosmopolitan family of stygobiotic amphipods, and inhabits a variety of subterranean biotopes, especially interstitial habitats. While the family is characterized by considerable sexual dimorphism, this dimorphism has adversely affected our understanding of the systematics of the group. Most species have restricted geographic ranges and occur in difficult to sample habitats, so it is common for individual species descriptions to be based on a single sex. In this work we revisit an analysis of morphological characters in an attempt to clarify their phylogenetic utility in resolving taxonomic relationships among genera by introducing a new species, two additional characters, and phylogenetic statistical support values. Eobogidiella venkataramani sp. n., from a spring fed brook in the Shirawati River basin along the escarpment of the Western Ghats (Karnataka, India) differs from the only known congener, Eobogidiella purmamarcensis, from Argentina, in the structure of mouthparts, the shape and ornamentation on gnathopods and characters of the telson. Our phylogenetic analyses indicate that the available morphological characters are not sufficient to resolve phylogenetic relationships within Bogidiellidae, thus these characters alone cannot be used to determine the phylogenetic placement of E. venkataramani sp. n. within the family. Nevertheless, E. venkataramani sp. n. shares diagnostic characters with Eobogidiella, supporting placement of the new species in this genus. Our findings point towards a critical need to resolve relationships within the family using molecular approaches, along with the development of a suite of additional morphological characters for Bogidiellidae. This is the third species of Bogidiellidae from southern India.

Original languageEnglish (US)
Pages (from-to)23-43
Number of pages21
JournalZooKeys
Volume2016
Issue number610
DOIs
StatePublished - Jan 1 2016

Fingerprint

Amphipoda
Crustacea
new species
phylogenetics
phylogeny
India
ornamentation
mouthparts
dimorphism
escarpment
biotopes
biotope
habitat
sexual dimorphism
habitats
amphipod
Argentina
river basin
family
taxonomy

Keywords

  • Biodiversity
  • Karnataka
  • Phylogenetic analysis
  • Subterranean fauna
  • Taxonomy

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Cite this

A reassessment of the phylogenetic utility of genus-level morphological characters in the family Bogidiellidae (Crustacea, Amphipoda), with description of a new species of Eobogidiella Karaman, 1981. / Sidorov, Dmitry A.; Katz, Aron D.; Taylor, Steven J.; Chertoprud, Mikhail V.

In: ZooKeys, Vol. 2016, No. 610, 01.01.2016, p. 23-43.

Research output: Contribution to journalArticle

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