Bohemannia ussuriella emerged from twigs of Quercus dentata (Fagaceae) collected in Hokkaido, Japan. This represents the first host record for this species and for any Bohemannia species in the East Palearctic. The distribution of this species is also updated and it includes Kyushu, Japan, which represents its southernmost locality.

A tineid species of the subfamily Harmacloninae, Harmaclona tephrantha (Meyrick, 1916), is newly recorded from Vietnam. The adults and the male and female genitalia are illustrated.

ツトガ科ヒゲナガノメイガ亜科Steniini族は幼生期が既知の種のほぼ全てが腐食性であることで特徴づけられる．一般に腐食性の幼虫は隠蔽環境に生息することが多く，そのためSteniini族についても幼生期が判明している種は少数に留まる．本研究では，Steniini族に属し，これまで幼生期が未知であったハナダカノメイガ Camptomastix hisbonalis，ヒメハナダカノメイガ C. septentrionalis，シロモンコノメイガ Glycythyma chrysorycta，クロフキノメイガ Nacoleia sibirialis，コガタシロモンノメイガ Piletocera sodalisについて，市販の汎用人工飼料を用いて採卵飼育を行い，幼生期の形態および摂食様式を明らかにした．

This paper provides Japanese review for gracillariid moths in the endemic genus Philodoria Walsingham, 1907 in the Hawaiian Islands, United States. These larvae feeds on many threatened and endangered Hawaiian endemic plants. All Philodoria species are reviewed based Kobayashi et al. (2021) and illustratied a key based on adult forewing color and pattern.

Coleophora deviella Zeller, 1847 is newly recorded from Japan. The adult specimens and genitalia are illustrated.

Gatesclarkeana idia Diakonoff, 1973 (Olethreutinae, Gatesclarkeanini) is recorded from Mie Prefecture, Honshu, Japan. The male and female genitalia are illustrated. This is the first record from Mie Pref.