Leptochilus (Lionotulus) leleji Fateryga & Mokrousov 2019, sp. nov.

Leptochilus (Lionotulus) leleji Fateryga, sp. nov.

(Figs 6–8)

Diagnosis. Head slightly wider than long; labial palpi not modified; temples with small unnoticeable pubescence posteriorly; pronotal carina weakly lamellate; pronotum laterally 1.5× as long as tegula length; tegula 0.8× as long as scutellum length, its outer margin evenly rounded posteriorly; ventral mesepisternum with large and sparse punctures, interstices exceed diameter of punctures and have distinct microsculpture; metanotum sharply truncated posteriorly; propodeal concavity not sharply edged laterally; hind trochanter rounded posteriorly; tergum 1 with distinct punctures; apical lamella of tergum 2 weakly sclerotized, semitransparent, with row of tiny basal punctures. Among other species of the genus Leptochilus de Saussure, 1853 occurring in Russia and neighboring countries, the new species is somewhat similar to L. (Lionotulus) alpestris de Saussure, 1855 [the latter have the head somewhat longer than wide, pronotal carina not lamellate, pronotum laterally nearly 2× as long as tegula length, punctures on ventral mesepisternum denser (interstices not exceed diameter of punctures), and propodeal concavity sharply edged laterally].

Material examined. HOLOTYPE, ♀: “ РеспУблика Алтай, Кош-Агачский Р-н, 5 км ЮВ с. Чаган-УЗУн, Р. ТУЯРык 11.VII.2016, Локтионов, ПРоЩалыкин” [Altai Republic, Kosh-Agach District, 5 km SE Chagan-Uzun, Tydtuyaryk River, 11.VII.2016, leg. V.M. Loktionov, M.Yu. Proshchalykin], “ N 50° 04,367’ E 088° 25,193’ 1780 m ” [ZISP]. PARATYPE, 1 ♀ [with the same labels] [CAFK].

Description. Female. Body length (from head to apical margin of tergum 2) 4.5 mm; fore wing length 4 mm.

Head 1.1× as wide as long in frontal view. Vertex with dense deep punctures; setae pale, some longer than scape width. Clypeus and ocular sinuses with appressed pubescence shorter than on vertex. Clypeus more finely densely punctured than vertex; 1.3× as wide as long; apical emargination semicircular, taking less than 0.2 of clypeal anterior margin; apical teeth triangular, carinate. Scape sparsely punctured, distinctly curved, some setae shorter than on vertex; flagellum with short unnoticeable pubescence. Dorsal mesosoma setae as on vertex. Pronotal carina developed along entire anterior margin of pronotum and very slightly lamellate, forming small blunt angles at lateral corners. Sculpture on pronotum and mesonotum as on vertex but interstices have more distinct microsculpture. Tegula nearly smooth. Dorsal and especially ventral mesepisterna with punctures sparser than on mesonotum. Dorsal surface of scutellum nearly flat. Hind surface of metanotum (behind truncated edge) with coarse shallow sculpture above and smoothed unclear sculpture below. Sculpture on propodeum like that on clypeus. Propodeal concavity with median carina; dorsolateral parts of propodeum rounded. Legs from femora to tarsi with short pale pubescence. Metasoma with pubescence as on legs. Punctures on tergum 1 small sparse, interstices reach several diameters of punctures, having distinct microsculpture. Main sculpture on tergum 2 finer and sparser than on tergum 1. Sternum 2 rounded in lateral view, sculpture as on tergum 1.

Basal color black. Apical bands on terga 1–2 whitish-yellow. Tegula and legs from distal ends of femora ferruginous. Wing strongly fuscous, particularly on marginal cell.

Male. Unknown.