Klimaszewskia, Yin & Zhang, 2021

Yin, Zi-Wei & Zhang, Wen-Xuan, 2021, Klimaszewskia, a new genus of the tribe Tyrini from the Oriental region (Coleoptera Staphylinidae: Pselaphinae), Zootaxa 4942 (4), pp. 592-598 : 596-598

Klimaszewskia sp.

( Figs 1B , 2I )

Material examined. 1 ♀, ‘ NEPAL (prov. Bagmati), Phuchauki nr. Kathmandu , 2300 m, 1.0V.81, I. Löbl’ ( MHNG) .

Description. Male. Unknown.

Female ( Fig. 1B ). Body moderately elongate, length (combined length of head, pronotum, elytra and abdomen) 2.26 mm; color uniformly red-brown, tarsi and palpomeres lighter; dorsum finely punctate.

Head lengthily and bluntly triangular, length from anterior margin of clypeus to head base 0.51 mm, width across eyes 0.36 mm; vertexal foveae at level of posterior margin of eyes; frons dilated apically, longitudinally and smoothly impressed between antennal tubercles; postocular margins rounded, with dense setae on each side; eyes small, hemispherical in lateral view, each composed of approximately 15 facets. Maxillary palpus ( Fig. 2H ) elongate, palpomere 4 with slightly sinuate lateral margin; length/width of palpomere 3 0.05/ 0.15 mm, palpomere 4 0.07/ 0.28 mm. Antennae elongate, length 2.31 mm; antennomere 1 (scape) larger than 2 (pedicel), shorter than antennomeres 2 and 3 combined, antennomere 2 slightly broader than 3, antennomeres 3–8 of similar width, successively shorter, antennomere 9–11forming distinct club ( Fig. 2C ), antennomere 9 much larger than 8, elongate, antennomere 10 similar to antennomere 9 in size, antennomere 11 slightly shorter than 9 and 10 combined, suboval, widest at middle.

Pronotum subglobose, approximately as long as wide, length along midline 0.46 mm, maximum width 0.44 mm, with slightly arcuate anterior and posterior margin, sides rounded at middle, then narrowing toward apex and subparallel in basal two-fifths.

Elytra subtriangular, much wider than long, length along suture 0.53 mm, maximum width 0.86 mm, shortened and strongly constricted at base, discal area with fine punctures, sides with long, dense hairs. Mesoventrite strongly transverse, with thin admesal ridges; mesoventral process with truncate apex. Metaventrite also transverse, with broad posterior intercoxal process, posterior margin of process broadly impressed at middle.

Legs elongate, simple. Lengths of pro-, meso- and metatarsomeres 1–3: 0.04, 0.16, 0.17 mm; 0.04, 0.18, 0.16 mm; 0.05, 0.21, 0.18 mm.

Abdomen wider than long, widest at sides of tergite 1 (IV), length along midline 0.76 mm, maximum width 0.94 mm; tergite 1 (IV) 2.17 times as long as tergite 2 (V), lacking carinae.

Genital complex ( Fig. 2I ) symmetric, transverse, 0.21 mm wide, moderately sclerotized.

Distribution. Nepal: Bagmati.

Comments. This female has an identical foveal pattern as of K. punctata sp. nov., the elongate fourth maxillary palpomere is broadest at basal 1/3, the pronotum has a distinct antebasal sulcus, and the first visible tergite is longest. Collectively, these characters place this specimen in the newly defined Klimaszewskia . The single female apparently belongs to a different species according to the followings: 1) the body size is much larger than that of K. punctata sp. nov. (2.26 vs. 1.54 mm), 2) the maxillary palpomere 4 is slightly sinuate on the lateral margin, and 3) the elytral disc is finely punctate.

Figures

FIGURE 1. Habitus of Klimaszewskia species. A. K. punctata sp. nov., male from Indonesia. B. K. sp., female from Nepal. Scale bars: 0.5 mm.

FIGURE 2. Diagnostic characters of Klimaszewskia species (A–G. K. punctata sp. nov. H, I. K. sp.). A. Head and pronotum. B, H. Left maxillary palpus. C. Antennomeres 8–11. D. Meso- and metaventrite. E–G. Aedeagus, in lateral (E), and ventral (F, G) view. Scale bars: 0.2 mm in A, C, D; 0.1 mm in B, E–I.