September 16, 2025

New species and records of Tetraserica Ahrens, 2004 from Indochina (Coleoptera: Scarabaeidae: Sericinae)

Key Points

14 new species of Tetraserica are described from Indochina, expanding existing taxonomy in Scarabaeidae.
The study reports new records of 57 taxa, enhancing the understanding of Tetraserica's distribution across Southeast Asia.
An emendation to Tetraserica semidamaidiensis corrects its original spelling, ensuring accurate classification.
Illustrations of male genitalia and a key to Asian mainland species are provided, facilitating identification.

Abstract

An update to the taxonomy and distribution of species of Tetraserica Ahrens, 2004 (Coleoptera: Scarabaeidae) from continental Southeast Asia is given. We present new records of 57 taxa and describe 14 new species: Tetraserica elargata Ahrens, Pacholátko & Pham, sp. nov., T. guidosabatinellii Ahrens, Pacholátko & Pham, sp. nov., T. haucki Ahrens, Pacholátko & Pham, sp. nov., T. konplong Ahrens, Pacholátko & Pham, sp. nov., T. lucieae Ahrens, Pacholátko & Pham, sp. nov., T. misofi Ahrens, Pacholátko & Pham, sp. nov., T. paraspinicrus Ahrens, Pacholátko & Pham, sp. nov., T. pseudospinicrus Ahrens, Pacholátko & Pham, sp. nov., T. quangnam Ahrens, Pacholátko & Pham, sp. nov., T. quangtri Ahrens, Pacholátko & Pham, sp. nov., T. schnelli Ahrens, Pacholátko & Pham, sp. nov., T. similis Ahrens, Pacholátko & Pham, sp. nov., T. sonla Ahrens, Pacholátko & Pham, sp. nov., T. strbai Ahrens, Pacholátko & Pham, sp. nov. The name of Tetraserica semidamaidiensis Fabrizi, Dalstein & Ahrens, 2019 is emended in respect to its incorrect original spelling: Tetraserica semidamadiensis Fabrizi, Dalstein & Ahrens, 2019. The male genitalia of the new species are illustrated and diagnostic characters to related species are given. The key to species of Asian mainland is updated.

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