Horniella smetanai Yin and Li

Yin, Zi-Wei & Li, Li-Zhen, 2014, Revision of the Oriental genus Horniella Raffray (Coleoptera, Staphylinidae, Pselaphinae), Zootaxa 3850 (1), pp. 1-83 : 72

publication ID	https://doi.org/ 10.11646/zootaxa.3850.1.1
publication LSID	lsid:zoobank.org:pub:BFD1F483-4255-429B-9E17-8D4A9E559C5F
DOI	https://doi.org/10.5281/zenodo.6142787
persistent identifier	https://treatment.plazi.org/id/CD490758-D857-FFAC-FF01-47F846DBF85A
treatment provided by	Plazi
scientific name	Horniella smetanai Yin and Li
status	sp. nov.

Treatment

26. Horniella smetanai Yin and Li , new species

Figs 43 View FIGURE 43 B, 45, 49H; Map 6 View MAP 6

Type material (4 ♂♂, 1 ♀). Holotype, ♂, labeled ‘ SABAH: Crocker Ra., 1200 m, km 63 rte Kota Kinabalu – Tambunan , 19.vi.1987, Burckhardt- Löbl / Holotype [red], ♂, Horniella smetanai sp. n., det. Yin & Li, 2014, MHNG’ . Paratypes: 1 ♂, same data as the holotype ; 1 ♂, 1 ♀, same data except ‘ 1270 m, km 60 rte Kota Kinabalu–Tambunan , 17.vi.1987 ’ ; 1 ♂, labeled ‘ BORNEO Sabah Mt. Kinab. N. P. , Por. H. S. area Eastern Ridge , Tr. 790 m, 17.viii.1988, A. Smetana [ B119 ]’. All paratypes are housed in MHNG, and each bears a yellow type label similar to that of the holotype except ‘ Paratype ♂ (or ♀)’.

Description. Male ( Fig. 43 View FIGURE 43 B). Length 3.54–3.64 mm. Head distinctly longer than wide, HL 0.79–0.81 mm, HW 0.62–0.68 mm; anterolateral genal projections ( Fig. 45 View FIGURE 45 C) weakly indicated; median sulcus between antennal tubercles short; scapes ( Fig. 45 View FIGURE 45 B) lacking expansion at lateral margins; clubs ( Fig. 45 View FIGURE 45 A) formed by apical three antennomeres, each distinctly elongate; venter lacking lateral spines ( Fig. 45 View FIGURE 45 D). Maxillary palpomeres II greatly elongate, slightly broadened at apical 1/3. Each eye composed of about 40–45 facets. Pronotum longer than wide, PL 0.81–0.84 mm, PW 0.71–0.73 mm. Elytra wider than long, EL 0.88–0.91 mm, EW 1.34–1.38 mm; discal striae reaching apical 4/5 of elytral length. Protrochanters simple, profemora ( Fig. 45 View FIGURE 45 E) each with two small ventral denticles at base and basal 1/3, protibiae ( Fig. 45 View FIGURE 45 F), mesotrochanters, mesofemora ( Fig. 45 View FIGURE 45 G), and mesotibiae ( Fig. 45 View FIGURE 45 H) simple; tarsomeres II extending to midlength of tarsomeres III. Abdomen large, AL 1.06–1.08 mm, AW 1.31–1.32 mm, tergite IV (first visible tergite) with median carina extending to near tergal apex, lacking lateral discal carinae, tergite V with thin median carina extending to half of tergal length. Sternite IX ( Fig. 45 View FIGURE 45 I) with wellsclerotized apical portion and less sclerotized basal portion. AeL 0.61 mm; aedeagus ( Figs 45 View FIGURE 45 J–L) with apically asymmetric median lobe, apex strongly extending; endophallus composed of single slender sclerite with broadened base.

Female. Similar to male in general appearance; each eye composed of about 38–42 facets; Profemora simple. BL 3.73–3.80 mm, HL 0.84–0.87 mm, HW 0.65–0.68 mm, PL 0.85–0.86 mm, PW 0.71–0.74 mm, EL 0.91–0.94 mm, EW 1.40–1.44 mm, AL 1.09–1.17 mm, AW 1.38–1.44 mm. Genital complex ( Fig. 49 View FIGURE 49 H) well-sclerotized, composed of apical sclerite and a pair of triangular basal sclerites.

Differential diagnosis. This species belongs to the H. gigas group. Males can be separated from H. gigas by the much smaller body size, the simple protrochanters, and the more slender form of the aedeagus, while H. gigas is larger (over 4.0 mm), the protrochanters have a distinct ventral spine, and the aedeagus is much stouter in form. The lack of long hairs on the male mesofemora and metatibiae quickly separates H. smetanai from H. pilosa .

Distribution. East Malaysia: Sabah ( Map 6 View MAP 6 ).

Collection notes. Individuals were collected from leaf litter samples by sifting and use of Winkler-Moczarski extractors.

Etymology. The new species is named after Aleš Smetana (Ottawa, Canada), in acknowledgment of his collection of some of the material used in this study.