The genus of Gustavia Kramer, 1879 comprises 16 species are collectively distributed in the worldwide. Only one species, Gustavia microcephala Nicolet, 1855 has been recorded in Korea. We found a new species, Gustavia aominensis Fujikawa, 2008 to Korean inventory from the litter and soil samples of Sasa borealis at Cheong-ok mountain natural recreation forest. A diagnostic description of this species with detailed illustration and data on its geographical distribution are presented.

The genus Peloribates is comparatively species rich, and world-wide, more than eighty species are assigned to this genus (Bayartogtokh, 2000). In Korea, four species of Peloribates were recorded. In this study, Peloribates barbatus Aoki is reported from Korea for the first time. This species was collected from rice straw mat of Cherry tree in Andong National University. We present the morphology of this species relative to body size, length, shape of sensillus, position of seta, and feeding comparing with previously recorded four species of Peloribates. A diagnostic description of this species with detailed illustration.

Mongolia is a land-locked country which covers an area of 1,564,116 km2 in North East Asia. It is one of the largest land-locked countries and the world’s seventh largest country. The climate of Mongolia is extremely continental with long, cold, and dry winters, and with relatively short, mild and dry summers. The mid-winter, temperatures averages -26℃ with extremes recorded as low as -58℃. Summer temperatures in the Gobi desert may reach ±40℃. Annual precipitation ranges from 600 mm in the Khentii, Altai and Khovsgol mountains to less than 100 mm in the Gobi. On the biodiversity side, more than 3,000 species of vascular plants, 927 lichens, 437 mosses, 875 fungi, and numerous algae have been recorded with many more yet to be classified. The fauna of the country includes 136 species of mammals, 436 species of birds, 8 species of amphibians, 22 species of reptiles, 75 species of fishes and about 13,000 species of insects. The insect fauna is not definitively explored up to date. In the present study, we briefly reviewed for the Lepidoptera diversity of Mongolia. Many entomologists from various contries have been described or recorded more than 900 species of butterflies and moths belonging to 30 families, such as: Tineidae 27 spp. (Zagulyaev, 1979), Aegeriidae 2 spp. (Daniel, 1975), Tortricidae 190 spp. (Razowski, 1972), Cossidae 5 spp. (Yakovlev, 1968), Gelechiidae 50 spp. (Piskunov, 1979), Pterophoridae 19 spp. (Zagulyaev, 1968), Ethimdae 11 spp. (Zagulyaev, 1968), Athihiidae 2spp.(Kuznetsov, 1980), Morphidae 1sp. (Reidl, 1960), Pyralidae 27 spp. (Whalley, 1979), Hesperiidae 19 spp. (Korshunow, 1977), Papilionidae 10 spp. (Yakovlev, 1923), Pieridae 20 spp. (Korshunov, 1972), Lycaenidae 56 spp. (Bailint, 1989), Satyridae 57 spp. (Goltz, 1939), Nymphalidae 60 spp. (Fruhstofer, 1908 Korshunov, 1976; Korshunov & Soljanikov, 1977 Bayartogtokh & Enkhbayar, 2009), Lasiocampidae 11 spp. (Dubatolov & Zolotuhin, 1992); Sphingidae 12 spp. (Daniel, 1971); Geometridae 196 spp. (Wehrli, 1922); Noctuidae 130 spp. (Sukharev, 1982).