**To the knowledge of the genus Syntomus Hope, 1838 (Coleoptera, Carabidae, Lebiinae) of the Oriental region**

VOJTĚCH RÝZNAR, ALEXANDER ANICHTCHENKO — Wed, 27 Aug 2025 00:00:00 +1200

All species of the genus Syntomus described from the Oriental region are revised. Six species are excluded from this genus. A new species, S. mateui sp. nov., is described from India and Nepal. One subspecies, S. monticola curtus Andrewes, 1923, is elevated to species rank S. curtus (Andrewes, 1923) stat. nov. and redescribed. New combinations and a new synonymy are proposed: Dromius nagatomii Jedlička, 1966 = Syntomus nagatomii (Jedlička, 1966), comb. nov.; Syntomus quadripunctatus (Schmidt-Göbel, 1846) = Metabletus philippinus Jedlička, 1936, syn. nov.; Metabletus hastatus Andrewes, 1931 = Metadromius hastatus (Andrewes, 1931), comb. nov. Lectotypes are designated for Metabletus monticola Andrewes, 1923 and Metabletus monticola var. curtus Andrewes, 1923. An identification key to oriental species of Syntomus is provided.

**A new Chinese Ephemera species (Ephemeroptera: Ephemeridae) from a small muddy canal**

DI WANG, YU-XIAN SUN, NING-NING WANG, CHANG-FA ZHOU — Wed, 27 Aug 2025 00:00:00 +1200

Nymphs of the genus Ephemera are usually found in sandy/muddy habitats but have not been collected from purely muddy sediments in China. However, a tentative sampling in a small wetland surrounded by agricultural fields revealed a new species Ephemera aureola sp. nov. The reared adults and collected nymphs demonstrate that this species exhibits mixed characters of the subgenera Ephemera and Sinephemera. Remarkably, the new species possesses straight stripes on abdominal terga VI–X, while its sterna have oblique streaks. The male genitalia have titillators, and the wings are almost uniformly golden. The nymphs have a shallow median ridge and setal tuft on tergum I, while its frons has a shallowly concave anterior margin. There is only one diagnostic feature separating subgenus Ephemera.

Journal of Insect Biodiversity

To the knowledge of the genus Syntomus Hope, 1838 (Coleoptera, Carabidae, Lebiinae) of the Oriental region

A new Chinese Ephemera species (Ephemeroptera: Ephemeridae) from a small muddy canal

**To the knowledge of the genus Syntomus Hope, 1838 (Coleoptera, Carabidae, Lebiinae) of the Oriental region**

**A new Chinese Ephemera species (Ephemeroptera: Ephemeridae) from a small muddy canal**