Recent genetic analysis has revealed the presence of three separate species among the Japanese high brown fritillaries which constitute the subgenus Fabriciana of the genus Argynnis. The Japanese names for them are Sato uragin-hyoumon(Sato Fritillary), Yama uragin-hyoumon(Yama Fritillary), and Hime uragin-hyoumon(Hime Fritillary), and in this paper I use sato, yama, and hime to denote the three species for the sake of simplicity. As genetically identified specimens were accumulated, I was able to undertake morphological analyses of sato-, yama-, and hime-identified specimens and categorize the type series specimens, using discriminant analysis and principal component analysis. As results, I show that the pallescens Butler, 1873 types belong to hime, and that the locuples Butler, 1881 types are a mixture of sato and yama. We should use the scientific name A. pallescens for the hime-group whose habitat is limited to the southern part of Oshima peninsula in Hokkaido. The scientific name A. locuples is here stabilized to apply to the sato-group by the designation of the appropriate male specimen in the Natural History Museum, London(NHM). For the yama-group, the name A. nagiae Shinkawa et Iwasaki, 2019 remains at present appropriate, although we found two males of this species in the type series of A. locuples in the NHM, London, and A. addipe kurosawae, 1915, whose identity has not yet been determined, might also be identified as belonging to the yama-group in the future.

Population surveys of the Marbled fritillary(Brenthis sp.)were performed in the Nojiri grassland at the foot of Mount Fuji using the mark and recapture method from 2011 to 2013. The estimated numbers of males in mid-July were about 150 in 2012 and 310 in 2013. Males and females displayed differences in behavior. Males selectively patrolled in a 500-m range with core and sub-core emergence areas/nectariferous plant habitats and a high possibility of encountering females. Females moved in a straight line by short and long displacements and often made movements to nectariferous plants in a direct fashion. Males emerged earlier than females, alternating between resting and seeking females, then copulating with emerged females and nectaring in between. After copulation, females moved to the nectariferous plant habitats, and after a period of time returned to the larval host plants to oviposit their eggs. There was only one isolated local population in this study area, which had some core and sub-core emergence areas. Nectariferous plants were located in and around the emergence areas.

Cuprina porphyrantha(Meyrick, 1913) (Stathmopodidae)was recorded from Hokkaido, Honshu, Kyushu, Japan by Terada(2016)under the junior synonym, “C. flaviscapella Sinev, 1988”. The biological data of the immature stages has hitherto been poorly known. Dryopteris hondoensis is newly recorded as the hostplant and biological notes on the immature stages of this species are given for the first time with photographs. Biological data are provided for two described species that also feed on D. hondoensis: Pachyrhabda aedificatrix Terada, 2016(Stathmopodidae), and Lecitholaxa thiodora(Meyrick, 1914) (Lecithoceridae).

Measurements were made of the weight of the pupa, the length of the pupal stage and the length of the forewing of the adults in the painted lady butterfly. The distribution and the mean value of the weight of pupae were nearly identical for male and female. There were seasonal changes in the weight of pupae, heavier in late spring and lighter in summer and winter. The pupae lost weight with time, and the amount of loss was greater in heavy pupae than in light pupae. However, the relative weight loss to the weight at pupation was constant irrespective of the differences in the size of pupae but was increased by lengthening of the pupal stage. The rate of loss of pupal weight was reduced with elongation of the pupal stage. The amount of loss of pupal weight was asymptotically increased with time, and the weight loss reached a steady value of about 16.5% of the original at about 25 days in the pupal stage. The length of the forewing was correlated with the weight of the pupae, and was longer for female than for male at any given weight. The length of the forewing also showed seasonal changes, nearly in parallel to the weight of the pupae, and large adults appeared in late spring and small adults in summer and winter.

Bembecia kaszabi(Căpuşe, 1973) is newly recorded from Kyushu, Japan. This record is the first discovery of the genus Bembecia from Japan. The figures of adults and genitalia, intraspecific variation(including the black form), and some aspects of the biology(e.g., the host plant in the Japanese habitat)are provided in addition to the sequence of the mtDNA COI barcode region.

The immature stages of Aedia kumamotonis(Matsumura, 1926) are described and illustrated, and notes on the morphological differences from the sweet potato leaf worm, A. leucomelas(Linnaeus, 1758) are given. The following two points are revealed in this paper. 1: The number of larval instars of A. kumamotonis is estimated as six. 2: A. kumamotonis and A. leucomelas are not morphologically distinguishable in the first to second instar larvae but are externally distinguishable in the third to sixth instar larvae mainly by their head capsule coloration.

The pear fruit moth, Acrobasis pirivorella(Matsumura), has often been treated as Ectomyelois pyrivorella(Matsumura)or as Acrobasis pyrivorella(Matsumura). As the generic treatments differ between researchers, we focus here on the specific name only. We investigated the reasons for the difference in spelling of the specific name, pirivorella vs. pyrivorella.