Description of a new species of the genus Xyrosaris Meyrick (Lepidoptera: Yponomeutidae) from the Far East of Russia with notes on congeneric species.

A new species, Xyrosaris insularis sp. n., was found in the Far East of Russia. Most of the specimens were obtained through the rearing of larvae that fed on Celastrus orbiculatus Thunb. (Celastraceae). The genetic distances between the mtCOI sequences in X. insularis and congeneric species are in the range 1.2-13.9%. Minimal genetic distance (1.2%) was discovered between new species and X. lichneuta Meyrick from Shaanxi (China), which is lower than the standard mtCOI barcoding threshold of 2% for species delineation, but both taxa differ well in the genital morphology. The description of a new species is accompanied by illustrations of variations in the pattern, by the genitalia of both sexes, and by larva on its host plant.

New genus of gelechiid moths (Lepidoptera: Gelechiidae) from Borneo, and its four new species.

Tawaya gen. n. and its four new species (T. flaventia sp. n., T. rutila sp. n., T. luteola sp. n. and T. armeniaca sp. n.) are described from Borneo. A key to the described species is provided. The taxonomic position of a new genus within the subfamily Dichomeridinae (Gelechiidae) is proposed based on a combination of molecular and morphological analyses.

Sophronia salaganella sp. n. from the Russian Altai and new data on Palaearctic Sophronia Hübner, [1825] species (Lepidoptera, Gelechiidae).

Sophronia salaganella Sumpich Bidzilya, sp. n., is described based on specimens collected in the mountains of the Altai Republic and Buryatia in Russia. The new species is most similar to S. illustrella (Hübner, 1796) and S. orientalis Li Zheng, 1998 from which it can be reliably distinguished by characters of the genitalia. Sophronia iciculata Omelko, 1999, syn. n., is a junior synonym of S. orientalis; and S. marginella Toll, 1936, syn. n., is a junior synonym of S. consanguinella Herrich-Schaffer, [1854]. Sophronia alaicella Caradja, 1920 is redescribed, and the adult and the male and female genitalia are illustrated. Sophronia illustrella (Hübner, 1796) is recorded from Russia for the first time. A checklist of Sophronia Hübner, [1825] of the world is provided.

Review of the genus Zelleria Stainton (Lepidoptera, Yponomeutidae, Yponomeutinae) in East Asia, with description of a new species.

Zelleria Stainton, 1849 from the East Asia is reviewed. Zelleria asiatica Na, Bae Ponomarenko, sp. nov. is described from Korea and Russia. Three species are redescribed and provided with a key to species, illustrations of adult, male and female genitalia, diagnoses, and descriptions. Z. japonicella Moriuti, 1977 is reported from Korea for the first time.

A new genus of Pexicopiini (Lepidoptera: Gelechiidae) for "Gelechia" acanthopis Meyrick, 1932, with review of functional morphology of male genitalia in allied genera.

The systematic status of Gelechia acanthopis Meyrick, 1932 is reviewed. The general and functional morphology of the male genitalia merits a new genus in Pexicopiini, Sitotrogoides gen. nov., for G. acanthopis. The musculoskeletal apparatus of the male genitalia in Sitotrogoides is described for the first time and compared with allied genera. The taxonomic position of the genus Sitotrogoides is determined within the tribe Pexicopiini. The lack of the muscle m3 is suggested as a characteristic associating Sitotrogoides with Sitotroga and differing from all other genera in Pexicopiini. The type species of Sitotrogoides, Gelechia acanthopis Meyrick is redescribed. Our new records of Sitotrogoides acanthopis from Korea suggest its extended distribution out of Japan.

A new species of Anthonympha Moriuti (Lepidoptera: Plutellidae) from Russian Far East, with annotated check list of the genus.

Anthonympha rossica sp. nov., is described and illustrated. A checklist and key to the species of the genus are given. All the species are diagnosed.

New taxonomic data on the genus Ypsolopha Latreille (Lepidoptera, Ypsolophidae) with descriptions of two new species from the Russian Far East.

Two new species of the genus Ypsolopha Latreille, 1796 are described from Far East of Russia: Ypsolopha melanofuscella sp. n. and Ypsolopha straminella sp. n. Two new synomymies are proposed: Ypsolopha ulingensis Yang, 1977, a new junior synonym of Ypsolopha costibasella (Caradja, 1939); and Cerostoma falculella Erschoff, 1877, a new junior synonym of Ypsolopha asperella Linnaeus, 1761. The species Ypsolopha costibasella Caradja, 1939, Ypsolopha nigrofasciata Yang, 1977 and Ypsolopha nigrimaculata Byun et Park, 2001 are recorded from Far East of Russia for the first time. The male genitalia of Ypsolopha nigrofasciata are described and illustrated for the first time, diagnostic genital characters are given.