March 3, 2026Open Access

Two new Margarinotus Marseul, 1853 from Jiangxi, Guangxi, and Guangdong provinces (China), with an updated key to all Chinese species (Coleoptera, Histeridae, Histerinae, Histerini)

Key Points

Margarinotus mazuri and Margarinotus deficiens are newly identified species, expanding the genus in China.
Lectotype and paralectotypes for Hister gentilis were designated to clarify taxonomic relationships.
Species were primarily collected using flight interception or pitfall traps, ensuring accurate identification.
Taxonomic status of subgenus Grammostethus is discussed, indicating ongoing evaluation of its phylogenetic placement.

Abstract

Two new species of Margarinotus Marseul, 1854 from southern China are described herein: Margarinotus (Grammostethus) mazurisp. nov. and Margarinotus (Ptomister) deficienssp. nov. Subgeneric placement of new taxa is only tentative, pending the phylogeny of the taxon. Almost all specimens were collected using flight interception or pitfall traps. The species Margarinotus (Grammostethus) arrosor (Bickhardt, 1920), comb. nov. and Margarinotus (Grammostethus) birmanus Lundgren, 1992 are herein re-described and figured. Margarinotus arrosor (Bickhardt, 1920) is transferred into subgenus Grammostethus Lewis, 1906 based on the structure of the aedeagus. The taxonomic status of the subgenus Grammostethus Lewis, 1906 is briefly discussed, and an updated key to all Chinese species is given. Lectotype and paralectotypes of Hister gentilis Lewis, 1891 (= Margarinotus (Grammostethus) birmanus)) are designated.

Two new Margarinotus Marseul, 1853 from Jiangxi, Guangxi, and Guangdong provinces (China), with an updated key to all Chinese species (Coleoptera, Histeridae, Histerinae, Histerini)

Key Points

Abstract

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