Euploea tobleri SEMPER, 1878 endemic to the Philippines, is differentiated into six geographical races, namely, tobleri SEMPER, 1878 (from Luzon), snelleni MOORE, 1883 (from Mindanao), peducaea FRUHSTORFER, 1910 (from Bazilan), romeo SCHRODER et TREADAWAY, 1978 (from S.E. Luzon), silmae SCHRODER et TREADAWAY, 1978 (from Leyte) and inouei OSADA et HASHIMOTO, 1982 (from Negros). Recently we captured a remarkable new geographical race of this species from Mindoro. In this present paper, we describe it as a new subspecies.

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In writing this paper I am much indebted to Mr. A. WATSON, British Museum (Natural History), London, for his advice and for his kind offices which enabled my examination of the rich collection of the Arctiidae under his curation. I wish to thank Dr. T. KUMATA, Hokkaido University, Sapporo, and Dr. R. GAEDIKE, Abt. Taxonomie der Insekten, Institut fur Pflanzenschutzforschung der AdL. Bereich, Eberswalde, who provided me facilities in examining the type-series under their cares. I am also indebted to Dr. D. STUNING, Museum Alexander Koening, Bonn, for the loan of paratypes of Lithosia chekiangica DANIEL. I am grateful to the following friends for their gifts of specimens : S. AZUMA, B-S. CHANG, K. DEGUCHI, A. KAWABE, S. KINOSHITA, Y. KISHIDA, T. MASUI, I. OHTSUKA, M. OWADA, M. SAIKAWA, R. SATO and S. SUGI. All the specimens including the type-series of the new taxa recorded in this paper are preserved in my collection, excepting those specified.

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In Japan, twenty-five species of the family Coleophoridae have been recorded by ISSIKI (1950, 1957), MATSUMURA (1930), MEYRICK (1931, 1932, 1936), MORIUTI (1972, 1982), and OKU (1965, 1979). Among them, Coleophora longi signella MORIUTI is conspecific with C. obducta MEYRICK, and C. tholoneura MEYRICK with C. versurella ZELLER (BALDIZZONE, 1985). Therefore, twenty-three Japanese species are known at present. However, they may represent only a part of the Japanese coleophorid fauna. In fact, we have found many other species of the family caught in Japan in some public and private collections. The present series of our studies aims to describe the new findings concerned. At first, four new species of the genus Coleophora are described here. To denote the position of mouth opening in larval case, HERRICH-SCHAFFER'S method is employed (see HERING, 1951, p.102). The type depositories are abbreviated as follows: EHU=Entomological Institute, Hokkaido University, Sapporo, Japan; USNM = U. S. National Museum, Smithsonian Institution, Washington B.C., USA; ZMH = Zoological Museum, University of Helsinki, Finland; BLDZ=private collection of the senior author ; and PTK=private collection of Mr. H. PATZAK, Aschers-leben, DDR. Before going further, we wish to express our thanks to Drs. Donald R. DAVIS and R.W. HODGES, U. S. National Museum, Mr. Jukka JALAVA, Zoological Museum, University of Helsinki, and Mr. Helmut PATZAK, Aschersleben, for their kindness in loan of material.

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Comparison between Delias belisama balina FRUHSTORFER, 1908 and D. oraia bratana KALIS, 1941, both from the central Bali and its vicinities was made by some morphological and behavioural characters. These two species resemble each other, but there are definable differences between them in the habitat, habit, adult size and wing marking, as described below: 1) D. belisama balina is widely distributed in the Bali island from the foot hills to the altitudes of 1,000m or higher, whereas D. oraia bratana seems to be confined to mountainous areas at the altitude of 1,000m or higher around the central Bali (Fig. 1). 2) The both species were observed to fly together at peripheries of montane woodland 1,000m or higher, where D. oraia bratana was apparently commoner and also more active than D. belisama balina. On the other hand, the author found some individuals of D. belisama balina congregating on the twigs at sunny spots in woodland but such was not the case with D. oraia bratana (Fig. 2). 3) D. oraia bratana (the mean forewing length 37.6 mm in ♂ and 38.9 mm in ♀) was larger than D. belisama balina(36.5 mm in ♂ and 37.1 mm in ♀) in both sexes (P<0.05 by t-test, Table 1). But specimens of both species can not be distinguished from each other by the sizes only because of the existence of many individuals with identical sizes belonging to either species (Fig. 3). 4) The two species may be distinguishable from each other using characteristics pertaining to the following points; ♂: the marginal black band on the forewing upperside; the extent of suffusion with whitish scales in basal half of the forewing underside; colour tone of the yellow area, colour tone and size of the red spot on the hindwing underside. ♀: colour tone and size of the red spot, and the extent of suffusion with blackish scales on the hindwing underside (Figs. 4-7).

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The genus Gonepteryx was taxonomically reviewed mainly based on the ultraviolet reflective patches generally called "the UV pattern" or "the hidden wing pattern" on the upperside of male wings. The UV reflective patches, general features, distribution and taxonomic notes were briefly described in each species and subspecies. The description of UV reflective patches was made by classifying into 5 grades in relation to the development of UV reflective patches. The UV patterns were so constant in every species (or subspecies) that it could be used as an useful character to classify the Gonepteryx species, except for some cases such as in G. rhamni rhamni or G. amintha formosana in which the pattern was individually fairly various. In most localities where 2 to 4 species occur sympatrically, these patterns were specifically different in the grades. This fact suggests that the UV patterns had been characteristically developed in each species so as to play an important role not only in intra-specific sexual communication, but also in behavioural isolating mechanism.

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