Neosymydobius Baker is a small genus of aphids that is associated with Quercus spp. in North America. Six species are known, as follows: agrifoliae (Essig), albasiphus (Davis), canadensis Richards, chrysolepis (Swain), luteus Tissot, and memoralis Hottes and Frison. All species are redescribed and an illustrated key is offered.

The following new pyraustine taxa are described: Psammotis turkestanica n. sp., East Turkestan; P. orientalis n. s p., Hokkaido, Far-Eastern SSR, Manchuria and Siberia; Xanthopsamma, n. gen., type-sp. X. aurantialis n. sp., Chekiang, Kiangsu and Hunan provs., China; X. youboialis n. sp., Hainan I., China; Nascia cilialis christophi n. subsp., Far-Eastern SSR; N. c. kumatai n. subsp., Hokkaido; Perinephela lancealis bergmeni n. subsp., Kurile Is.; P. l. pryeri n. subsp., Hokkaido; P. l. honshuensis n. subsp., Honshu; P. l. sinensis n. subsp., Shensi Prov. and West and South China; P. l. taiwanensis n. subsp., Taiwan.

The following taxa are described as new: Pronomis n. gen., type-species Pyrausta delicatalis South, also containing Pyrausta profusalis Warren; Pronomis flavicolor n. sp., Taiwan; Nomis albopedalis tomariensis n. subsp., Kuriles; Nomis brunnealis n. sp., Japan and China; Gynenomis n. gen., type-species Pyrausta sericealis Wileman; Gynenomis mindanaoensis n. sp., Philippine Is., Paranomis n. gen., type-species Paranomis denticosta n. sp., Yuennan Prov., China; Paranomis nodicosta n. sp., Shensi Prov., China; Paranomis sidemialis n. sp., Manchuria; Paranomis moupinensis n. sp., Szechwan Prov., China; Oronomis n. gen., type-species Pyrausta xanthothysana Hampson.

The female of Tarsonemus indoapis n. sp. is described, illustrated, and its unusual morphological features are discussed. This mite is apparently restricted to the head region, where its microhabitat is possibly the posterior tentorial pits, of the adult host, Apis indica Fabricius. It is compared briefly with other tarsonemid symbionts of bees, that is, species of Acarapis and Tarsonemus apis Rennie.