Hydrosmecta, Thomson, 1858

Lee, Seung-Gyu & Ahn, Kee-Jeong, 2024, Korean species of Hydrosmecta Thomson (Coleoptera: Staphylinidae: Aleocharinae) with descriptions of two new species, Zootaxa 5399 (3), pp. 265-274 : 266

Key to species of Korean Hydrosmecta

1. Body length more than 2.0 mm; antennomere 2 slightly longer than 3, antennomere 4 distinctly elongate ( Fig. 4B )..................................................................................... Hydrosmecta koreana sp. nov.

- Body length less than 2.0 mm; antennomere 2 distinctly longer than 3, antennomere 4 slightly elongate................. 2

2. Elytral suture less than 1.2 times as long as midline of pronotum; basal capsule of median lobe of aedeagus relatively narrow in ventral view ( Fig. 2F ); apical process more or less subtriangular, broader subapically and pointed at apex in lateral view ( Fig. 2E )............................................................................. H. beolgokensis sp. nov.

- Elytral suture more than 1.2 times as long as midline of pronotum; basal capsule of median lobe of aedeagus broader in ventral view (fig. 11 in Paśnik 2001); apical process narrower subapically and rounded at apex in lateral view (fig. 10 in Paśnik 2001)................................................................................... H. sogamensis

Figures

FIGURE 2. Hydrosmecta beolgokensis sp. nov. A: male abdominal tergite VIII (dorsal view); B: male abdominal sternite VIII (ventral view); C: female abdominal tergite VIII (dorsal view); D: female abdominal sternite VIII (ventral view); E: median lobe of aedeagus (lateral view); F: median lobe of aedeagus (ventral view); G: paramere (lateral view); H: spermatheca. Scales = 0.1 mm.

FIGURE 4. Hydrosmecta koreana sp. nov. A: head (ventral view); B: antenna; C: pronotum (dorsal view); D: prosternum (ventral view); E: metanotum (dorsal view); F: meso- and metaventrites (ventral view); G: scutellum (dorsal view); H: elytron (dorsal view).