Four new species of Blastobasis Zeller, 1855 are described from Thailand: B. tridigitella, B. basipectenella, B. bispinaella, and B. ianella. Photographs of the imagos and illustrations of the male and female genitalia are provided.

Twenty eight new species of Acentropinae are described from the Philippines: Nymphieula negrosensis sp. nov., N. mindorensis sp. nov., N. zambalensis sp. nov., N. samarensis sp. nov., N. banauensis sp. nov., Eoophyla pulehralis sp. nov., E. naumanni sp. nov., E. fontis sp. nov., E. nussi sp. nov., E. riehteri sp. nov., E. yeni sp. nov., E. quezonensis sp. nov., E. bieolensis sp. nov., E. litoralis sp. nov., E. montanalis sp. nov., E. eallilithalis sp. nov., E. sehintlmeisteri sp. nov., E. ley tens is sp. nov., E. eernyi sp. nov., E. napoleoni sp. nov., E. eervinalis sp. nov., Eristena samaritai sp. nov., Margarostieha nigreseens sp. nov., Paraeymorizafuliginosa sp. nov., P. argenteolineata sp. nov., P. nigrella sp. nov., Parapoynx leueographa sp. nov., and P. pyenarmonides sp. novo New generic combinations: Ambia triehostylalis Hampson, 1897 from Sulawesi is transferred from the Musotiminae to Eoophyla (Acentropinae) where it stands as Eoophyla triehostylalis (Hampson, 1897) comb. n.; Eoophyla wollastoni (Rothschild, 1915) comb. n. (Aulaeodes), Eoophyla flavifaseialis (Hampson, 1917) comb. n. (Aulaeodes), Eoophyla longiplagialis (Hampson, 1917) comb. n. (Aulaeodes), the last three species are from Irian Jaya; and Eoophyla stresemanni (Rothschild, 1915) (Aulaeodes) comb. n. from Ceram. The male and female genitalia are illustrated together with pictures of the adults. The diagnostic features of the species are given and the nearest relatives are indicated. All new species are Philippine endemics. The rate of endemism in the Acentropinae of the Philippines is about 85%. This remarkable high percentage, corroborating the notion that the Philippines are a hot spot of biodiversity in South East Asia, points to the particular geographic situation and geological history of the Philippine Islands.

Three species of the genus Tisis are newly described from Sarawak, Malaysia: T. amabilis sp. nov., T. sabahensis sp. nov., and yasudai sp. nov.. T. luteella (Snellen) is reported for the first time from Sarawak. Taxonomical notes on some little known species are given, with illustrations of their adult images. Illustrations of the genitalia of the new species and the newly reported species from Sarawak are provided.

During the expedition of Mt. Chanbai-shan, China in 1999 to 2002, a total of 67 species belonging to 47 genera, 7 subfamilies are recognized. Of these, 11 species, Eudonia hiranoi Inoue, Scoparia yamanakai Inoue, Crambus argyrophorus Butler, Goniorhynchus exemplaris Hampson, Herpetogramma moderatalis (Christoph), Herpetogramma pseudomagna Yamanaka, Opsibotys perfuscalis Munroe et Mutuura, Pleuroptya harutai (Inoue), Pyrausta rubiginalis (Hubner), Hypsopygia regina Butler, and Orthopygia nannodes (Butler) are reported for the first time from China. The synonymies, distributional ranges, and photographs of newly reported species are provided.

A taxonomic review of the genera Serica Mac Leay and Nipponoserica Nomura belonging to the subfamily Sericinae in Korea is presented. As a result, four species of the genus Serica induding two new species, S. hirsuta sp. nov. and S. lutea sp. nov., and two species of the genus Nipponoserica including one new species, N. opacicarina sp. nov. are considered to distribute in the Korean peninsula. The keys to the species, descriptions of the three new species and illustrations of adult's morphological characteristics and aedeagi are provided.

A taxonomic study of the genus Maladera Mulsant of Korean Sericinae (Coleoptera, Melolonthidae) is presented. As a result, sixteen species are recognized including one new species, Maladera coreana sp. nov., and one subspecies, Maladera castanea koreana subsp. nov. A key, descriptions of the new species and subspecies, and photographs of aedeagus are provided.

A taxonomic study of two agathidiine genera and species in Korea is presented. The genera and two species [Cyrtoplastus seriepunctatus (Brisout, 1867) and Liodopria maculicollis Nakane, 1963] are reported for the first time in Korea. Descriptions and illustrations of diagnostic characters of these species, and key to the genera of the Agathidiini are provided.

A total of 22 species belonging to nine genera of the tribes Phenacoccini, Rhizoecini, and Sphaerococcini (Sternorrhyncha: Pseudococcidae) are noted in Korea, with descriptions and illustrations for full grown female. Among them, three species, Heliococcus puerariae sp. nov., Heliococcus zoysiae sp. nov., and Phenacoccus rubicola sp. nov., are new to science, and four species, Coccura comari (Kilnow, 1880), Heliococcus kuriensis Danzig, 1971, Puto erigeroneus (Kanda, 1959), and Puto orientalis Danzig, 1978, are reported for the first time from the Korean Peninsula, and a species is newly known from South Korea. Eleven species, which previously recorded in Korea, have not been found from South Korea during this study.