幻紫斑蝶 20260808 Common Crow (Tiptoe out the Back)

The common crow is a glossy-black butterfly with brown undersides with white markings along the outer margins of both wings. The wingspan is about 8–9 cm and the body has prominent white spots. The male has a velvety black brand located near the rear edge on the upperside of the forewing. On the underside there is a white streak in the same location. This white streak is present in both male and female. In its natural position this streak is hidden behind the hindwing and can be seen only when the butterfly is captured and observed closely. 幻紫斑蝶具有光澤的黑色翅膀與帶有白色斑紋的褐色翅腹。翼展約為 8–9 公分，體部具有明顯的白色斑點。雄蝶在前翅背面近後緣處有一塊天鵝絨般的黑色斑塊。在腹面相同位置也有一道白色條紋。此白紋雌雄皆有。在自然休息姿勢下，這條紋會被後翅遮蔽，僅於捕捉並仔細觀察時可見。