Biodiversitas Journal of Biological Diversity
Vol. 26 No. 8 (2025)

Phylogenetic and mitochondrial genome analysis of a putative new cave cricket species (Rhaphidophoridae) from a Thai subterranean habitat

KITTIYA INCHOEDCHAY (Department of Biology, Faculty of Science, Naresuan University. 99 Moo 9, Phitsanulok-Nakhonsawan Rd, Phitsanulok 65000, Thailand.)
SOMJIT HOMCHAN (Department of Biology, Faculty of Science, Naresuan University. 99 Moo 9, Phitsanulok-Nakhonsawan Rd, Phitsanulok 65000, Thailand)
YASH MUNNALAL GUPTA (Department of Biology, Faculty of Science, Naresuan University. 99 Moo 9, Phitsanulok-Nakhonsawan Rd, Phitsanulok 65000, Thailand)



Article Info

Publish Date
01 Sep 2025

Abstract

Abstract. Inchoedchay K, Homchan S, Gupta YM. 2025. Phylogenetic and mitochondrial genome analysis of a putative new cave cricket species (Rhaphidophoridae) from a Thai subterranean habitat. Biodiversitas 26: 3855-3862. Cave crickets (family Rhaphidophoridae) are a unique group of orthopteran insects characterized by long legs, large hind legs, elongated antennae, a humped back body, and are wingless, adaptations that enable them to thrive in subterranean environments such as caves. Despite their ecological importance and unique adaptations, their mitochondrial genomic architecture remains poorly characterized. This study investigates the mitochondrial genome of a cave cricket from the family Rhaphidophoridae, commonly referred to as cave crickets. Specifically, this research presents the first complete mitochondrial genome assembly and annotation of a morphologically distinct cave cricket specimen systematically collected from Nam Sai Cave, Noen Maprang District, Phitsanulok Province, Thailand. Using high-throughput sequencing and bioinformatics tools, a 16,260 base pair mitochondrial genome was assembled, comprising 37 genes, including 13 protein-coding genes, 22 tRNA genes, and 2 rRNA genes, with a GC content of 25.57%. The mitochondrial genome exhibits the identical gene arrangement of Orthoptera, suggesting strong conservation across the order. Phylogenetic analysis placed the specimen within the subfamily Aemodogryllinae, revealing a close evolutionary relationship with the genera Diestrammena, Tachycines, and Diestramima, strong molecular and morphological evidence supporting its classification within the tribe Aemodogryllini. These findings provide new genomic data for putative new species in Rhaphidophoridae, offering valuable insights into their phylogenetic relationships, genetic diversity, and adaptations to cave environments. This study lays the foundation for future taxonomic revisions and comparative evolutionary analyses within the family.

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Journal Info

Abbrev

biodiv

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Description

The Biodiversitas Journal was first published in 2000 by the Department of Biology, FMNS, Universitas Sebelas Maret, Surakarta, Indonesia, then in 2006 it was co-published by the Society for Indonesian Biodiversity and that department; since 2017 it was also hosted by Smujo. From 2003-2012 it was ...