Batriscenellus auritus ( Loebl , 1974)

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 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.

Figures

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 9. Collection localities of Batriscenellus koreanus sp. nov.: square; B. vicarius: circle; B. auritus: triangle; B. orientalis: diamond.