Integrative taxonomy of the genus Dudgeodes Sartori, 2008 (Insecta, Ephemeroptera, Teloganodidae) from the Philippines with description of new species and supplementary descriptions of Southeast Asian species.

Jhoana M Garces,Hendrik Freitag,Michel Sartori

doi:10.3897/zookeys.910.48659

Jhoana M Garces, Hendrik Freitag + Show 1 more

Open Access

https://doi.org/10.3897/zookeys.910.48659

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Abstract

COI sequences were used as an initial clustering method to delimit putative species of the genus Dudgeodes in the Philippines. An overview of the diagnostic characters of Philippine species and characters with high intraspecific variability are given. Six new species of Dudgeodes are described and illustrated: D. bauernfeindi Garces & Sartori, sp. nov., D. freitagi Garces & Sartori, sp. nov., D. luntian Garces & Sartori, sp. nov., D. pangantihoni Garces & Sartori, sp. nov., D. tabang Garces & Sartori, sp. nov., and D. vonrinteleni Garces & Sartori, sp. nov., all known from the nymphal stage. Supplementary descriptions are provided for D. pescadori Sartori, 2008, D. hutanis Sartori, 2008, D. stephani Sartori, 2008, D. ulmeri Sartori, 2008, and D. celebensis Sartori, 2008. A key to the nymphs of Philippine Dudgeodes species is proposed.

Highlights

The use of short DNA fragment sequences, such as the cytochrome oxidase subunit 1 (COI), is recommended as an efficient start of the taxonomic pipeline to cluster putative new species for further assessment (Monaghan et al 2005, Balke et al 2013, Kekkonen and Hebert 2014, deWaard et al 2019)
The results of molecular species delimitation methods (Fig. 1) were very similar, ranging from 15 to 16 putative species based on the analysis of 79 COI sequences
The initial clustering allowed for more systematic analysis of nymph morphological characters, permitting the efficient production of species diagnoses and descriptions using more meaningful characters

Summary

Introduction

The use of short DNA fragment sequences, such as the cytochrome oxidase subunit 1 (COI), is recommended as an efficient start of the taxonomic pipeline to cluster putative new species for further assessment (Monaghan et al 2005, Balke et al 2013, Kekkonen and Hebert 2014, deWaard et al 2019) Incorporating this process in the taxonomic pipeline has been shown to improve the rate of species discovery especially on hyperdiverse taxa (Kaltenbach and Gattolliat 2018, Meierotto et al 2019, Riedel and Narakusumo 2019). Elucidating nymphbased taxonomy is arguably favored in taxa like mayflies (Ephemeroptera) where there is high motivation to study the nymphs owing to biomonitoring programs (Boonsoong et al 2008)

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