Thermoregulation of the sunny butterfly species Colias erate and the forest one Ypthima argus, was studied at the Saigawa-riverside in the lower reaches of Tanbajima-Bridge, Nagano-city, central Japan. The optimum body temperature of C. erate ranged from 35℃ to 40℃, and that of Y. argus from 30℃ to 35℃ in August. The wing base of C. erate, that was observed to expose to the direct sun rays in the lower temperature, got darker in autumn than in summer. It was not considered that C. erate can fly at high temperature around the noon in summer and at low temperature after November, since they could not maintain their body temperature within optimum range. On the other hand, Y. argus entered the forest frequently when the solar radiation increased around the noon in summer, though flowers for nectaring and host plants for oviposition existed in the sunny place, and Y. argus basked in the perpendicular rays as the dorsal basking near the lower limit of optimum body temperature.

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The life history of Shirozua jonasi (Janson) was investigated in Kiso-dani, Nagano Prefecture during 1991 and 1994. In this paper, the adult behavior and egg stage are reported.

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The original descriptions of three nominal taxa of Luehdorfia, binominal Luehdorfia longicaudata, trinominal L. chinensis huashanensis and L. puziloi linjiangensis, are creditted to Lee, 1982, Yadoriga (107/108).

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Flower-visiting of three clearwing moths, Trichocerota esakii (Yano), Macroscelesia japona (Hampson) and Melittia inouei Arita & Yata, were observed on cymose flowers of Evodia glauca Miquel, Rutaceae in Amami-Oshima Island.

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For Stericta atribasalis Hampson, 1900, a new name, kogii, is given, because the specific name is preoccupied by Warren, 1895. A close relative formerly confused with atribasalis in Japan is described as a new species, flavopuncta, based on specimens from Japan and Primorye district, Russia.

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A new nymphalid, Euthalia byakko sp. n., is described from Laos. This new species is easily distinguished from the other congeners by its peculiar shape of the white postdiscal band in the forewing. The butterfly and male genitalia are illustrated.

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A new species, Scalarignathia ussuriensis n. sp., is described and figured. 5. kaszabi Capuse, 1973 is added to the sesiid fauna of Russia for the first time. A redescription of the male and the first description of the female of the latter species are given. The female genitalia of the genus are described and figured for the first time as well.

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New larval foodplants of ten species of Tortricidae and Carposinidae, Eupoecilia citrinana (ex Sanguisorba tenuifolia var. alba), Eudemis profundana (ex Prunus ssiori), Olethreutes siderana (ex Spiraea miyabei), Olethreutes hydrangeana (ex Tilia japonica), Olethreutes mori (ex Sorbus alnifolia), Lobesia (Lobesia) bicinctana (ex Sanguisorba tenuifolia), Enarmonia flammeata (ex Sasa plamata), Rhopobota neavana (ex Fraxinus mandshurica var. japonica) and Carposina niponensis (ex Rosa rugosa), are recorded from Japan.

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In this part, the larval and pupal stages and adult eclosion of Shirozua jonasi (Janson) are treated. The larva is semi-carnivorous during its stage and guarded by ants from predators. The newly emarged adult has woolly hair aroud legs, which seems to have a role to guard itself from ants' attack.

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Caterpillars of Curetis bulls and C. santana in Peninsular Malaysia feed on the youngest leaves of various woody Fabaceae, preferably at open, sunny sites. Larval development takes 9-13 days, the pupal phase lasts 10-12 days. Larvae are not tended by ants, but are able to co-exist with certain ant genera. No dorsal nectar organ is present. The conspicuous tentacle organs are defensive organs. They appear to dissipate a secretion produced in the inner wall of the tentacle sheaths. The pupae possess unique setae inserted into deep circular cavities in the cuticle. The homology between two of these setal types and the pore cupola organs otherwise found in Lycaenidae immatures is suggested. Larvae and pupae produce substrate-borne vibrational calls of unknown function, especially after tactile disturbance. Pupae also make air-borne chirping noise with their stridulatory organ. The observations indicate that Curetis immatures are myrmecoxenous, and highlight the isolated systematic position of the genus with its numerous autapomorphies.

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