Batriscenellus koreanus Kang, Park, Kim & Park sp. nov. Figs 1, 2

Material examined.

Holotype. 1♂ (NIBR), " Korea: Chungbuk prov. / Cheongwon-gun, / Bugi-myeon, Hwasang-ri, / 12III2020, 36°44'08.00"N, 127°29'01.40"E, 38 m / sifting soil litter / M-S Jang, / T-Y Jang" . Paratype (1 male). 1♂ (CBNUIC), same data as holotype .

Diagnosis.

This species can be distinguished from the other Batriscenellus species by the following combination of characters: antennomere 8 subquadrate and smallest (Fig. 1C), abdominal tergite V with a pair of median setiferous patches, VI with deep mediobasal sulcus (Fig. 1D), abdominal ventrite VIII with depressionand pair of dense setiferous patches (Fig. 1E), phallobase of male genitalia widely expanded, apical lobe of male genitalia curved to right in lateral view (Fig. 2C, D), paramere forked into two branches in lateral view, major branch curved to right (Fig. 2C, D).

Description.

Length 2.03-2.15 mm. Body reddish-brown (Fig. 1A). Head. All antennomeres with tubercles and long setae (Fig. 1C). Antennomere 1 subquadrate with dense trichomes on lateral margin, 2-7 rectangular, 8 rectangular [from photo] and smallest, 9 rectangular and larger than 3-8, 10 rhombic, 11 oval. Thorax. Each elytron with shallow discal stria. Abdomen. Abdominal tergite V with pair of setiferous patches, VI with deep sulcus (Fig. 1D: arrow). Abdominal ventrite VIII with depression and pair of dense setiferous patches (Fig. 1E: arrow). Aedeagus. Left side of phallobase widely expanded in dorsal view (Fig. 2A, B: arrow). Apical lobe of male genitalia curved right in lateral view (Fig. 2C, D). Paramere forked into two branches in lateral view, major branch curved to right (Fig. 2C, D).

Distribution.

South Korea (Fig. 9: square)

Etymology.

This species is named for Korea, where this species was collected.

Habitat.

The two specimens of this species were collected by sifting soil litter of a riverside grassland.