Pale Grass Blue (Pseudozizeeria Maha) 大和小灰蝶(ヤマトシジミ)

英語の後に日本語が続きます。

A male pale grass blue butterfly (Pseudozizeeria maha) looks completely different depending on whether its wings are open (1st photo) or closed (2nd photo). With its wings closed, you might overlook it as a plain, small grey-and-white butterfly with black spots. When it opens them, however, you are greeted by the striking pale blue upperside that gives the species its name. (See the 5th photo to view both sides at once.) Because butterflies bask in the sun to warm their bodies, you are more likely to catch a glimpse of that vibrant blue during cooler sunny days.

The pale grass blue resembles the plains cupid (Luthrodes pandava) very much, except the latter has orange spots on its wings. I once mistook a plains cupid for a pale grass blue.

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ヤマトシジミ(大和小灰蝶)です。一見すると地味ですが、雄の羽の表は英語名「pale grass blue(草むらで見かける薄青色の蝶)」の通り、美しいブルー(1枚目)。でも閉じると斑点のある地味な白(2枚目)です。(両方ご覧になりたい方は5枚目の写真をご覧ください。)蝶は体を温めるときに羽を広げるので、秋の方がこのブルーを見る機会が多いかもしれません。

クロマダラソテツシジミ(黒斑蘇鉄小灰蝶)によく似ていますが、クロマダラソテツシジミの羽にはオレンジ色の斑点があります。

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