Batriscenellus auritus (Loebl, 1974) Figs 5, 6

Batrisiella aurita Löbl, 1974: 92. Nomura and Lee 1993: 46. Kim et al. 1994: 144. Cho and Ahn 2001: 53. Löbl and Besuchet 2004: 277.

Batriscenellus auritus: Yin et al. 2011: 37. Park et al. 2013: 123. Schülke and Smetana 2015: 366.

Material examined.

1♂ (1♂ aedeagus dissected and mounted in Euparal on clear plastic card, CNUIC), Chungnam Prov., Gongju City, Mt. Gyeryongsan, Geumsubong, 23 VI 2000, H.-J. Kim, ex near stream .

Diagnosis.

This species can be distinguished from the other Batriscenellus species by the following combination of characters: antennomere 1 subquadrate with dense yellowish trichomes on lateral margin; elytra with pair of process antero-laterally; abdominal tergite IV with deep mediobasal sulcus (Fig. 5C); abdominal ventrite IV with dorsolateral setiferous patches; paramere of male genitalia forked into two branches, right paramere curved to right in dorsal view (Fig. 6A, B).

Description.

Length 1.85 mm. Body reddish-brown (Fig. 5A). Head. All antennomeres with tubercles and long setae (Fig. 5B). Antennomere 1 subquadrate with dense yellowish trichomes on lateral margin, 2-7 rectangular, 8 subquadrate and smallest, 9-10 rhombic, 11 oval. Thorax. Mesoventrite with lateral setiferous patches. Elytra with lateral process. Abdomen. Abdominal tergite IV with deep sulcus (Fig. 5C: arrow). Abdominal ventrite IV with pair of dorsolateral setiferous patches. Aedeagus. Apical lobe of male genitalia curved to right and expanded apical margin in dorsal view (Fig. 6A, B). Two branches of paramere curved to right in lateral view (Fig. 6C, D).

Comments.

The basal bulb of the male genitalia are broken in Figure 6D. See Löbl (1974: 93) for other examples of the aedeagus.

Distribution.

South Korea (Fig. 9: triangle).

Habitat.

A single specimen of this species was collected near a stream.