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This is a Case Report study (also classified as: Observational).

August 26, 2025Open Access

First male description of Urodeta longa Sruoga Kaila, 2019 from Thailand with identification keys to Asian species of Urodeta Stainton, 1869 (Lepidoptera, Elachistidae, Elachistinae)

VSVirginijus SruogaVilnius University LKLauri KailaUniversity of Helsinki ELErkka LaineUniversity of Oulu

Key Points

The male of Urodeta longa was described for the first time based on collected specimens in Thailand.
Significant characteristics of habitus and genitalia are illustrated, aiding in identification efforts.
DNA barcodes confirmed the conspecificity between male and female specimens of Urodeta longa.
High intra-generic barcode divergence among Urodeta species is noteworthy, indicating potential complexity in classification.

Abstract

A male of the little-known species Urodeta longa Sruoga & Kaila, 2019 is described for the first time based on material collected in northern Thailand. The species is diagnosed based on characters found in the habitus and genitalia, which are illustrated in detail. Conspecificity of male and female specimens is confirmed by DNA barcodes. Identification keys to all known Asian species of the genus Urodeta Stainton, 1869, based on male and female genitalia, are provided. Exceptionally high intra-generic barcode divergence among Urodeta species is reported.

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