Batriscenellus Jeannel, 1958 (type species: Batrisus fragilis Sharp, 1883)

Kang, Jun-Young, Park, Sun-Jae, Kim, A-Young & Park, Jong-Seok, 2021, Revision of Korean species of the genus Batriscenellus Jeannel (Staphylinidae, Pselaphinae, Batrisitae) with description of one new species, ZooKeys 1033, pp. 159-171 : 159

Batriscenellus Jeannel, 1958 (type species: Batrisus fragilis Sharp, 1883)

Batriscenellus Jeannel, 1958 (type species: Batrisus fragilis Sharp, 1883)

Batriscenellus Jeannel, 1958: 60. Löbl and Besuchet 2004: 276. Yin et al. 2011: 37.

Batriscenellinus Nomura, 1991: 321 (type species Batriscenellus uenoi Nomura, 1991).

Coreoscenellus Nomura & Lee, 1993: 12 (type species Batriscenellus brachygaster Nomura & Lee, 1993).

Nipponoscenellus Nomura, 1991: 310 (type species Batriscenellus transformis Nomura, 1991).

Scaioscenells Jeannel, 1958: 60 (type species Batrisus similis Sharp, 1883).

Diagnosis.

Members of this genus are easily separated from other genera of Batrisitae by the following combination of characters: head triangular with the transverse sulcus dorsally at mid-level of head and vertexal foveae; antennomere 1 subquadrate with dense trichomes (Figs 1C , 3B , 5B , 7B ), antennomeres 9-11 clubbed; pronotum with median antebasal fovea, lateral antebasal foveae, inner basolateral foveae and outer basolateral foveae, disc with median and lateral longitudinal sulci; elytra with two basal foveae; mesotibia with spine on distal margin (Fig. 1B ); abdomen rounded laterally; abdominal tergite IV largest; male genitalia asymmetric (Figs 2 , 4 , 6 , 8 ); paramere singular and originating from ventral phallobase.

Distribution.

South Korea, Russia (Far East), Japan, China.

Figures

Figure 1. Habitus figures of Batriscenellus koreanus sp. nov. A dorsal view B mesotibia C antennae D dorsal view of abdomen E ventral view of abdomen. Scale bars: 1 mm (A); 0.5 mm (B-D).

Figure 2. Aedeagi of Batriscenellus koreanus sp. nov. A, B dorsal view C, D lateral view. Scale bars: 0.1 mm.

Figure 3. Habitus figures of Batriscenellus vicarius A dorsal view B antennae C dorsal view of abdomen D ventral view of abdomen. Scale bars: 1 mm (A); 0.5 mm (B-D).

Figure 4. Aedeagi of Batriscenellus vicarius A, B dorsal view C, D lateral view. Scale bars: 0.1 mm.

Figure 5. Habitus figures of Batriscenellus auritus A dorsal view B antennae C dorsal view of abdomen D ventral view of abdomen. Scale bars: 1 mm (A), 0.5 mm (B-D).

Figure 6. Aedeagi of Batriscenellus auritus A, B dorsal view C, D lateral view. Scale bars: 0.1 mm.

Figure 7. Habitus figures of Batriscenellus orientalis A dorsal view B antennae C dorsal view of abdomen D ventral view of abdomen. Scale bars: 1 mm (A), 0.5 mm (B-D).

Figure 8. Aedeagi of Batriscenellus orientalis A, B dorsal view C, D lateral view. Scale bars: 0.1 mm.