Saptha angustistriata (Issiki, 1930)

紫帶閃舞蛾(Saptha angustistriata)是舞蛾科(Choreutidae)的成員。本種的前翅為深褐色底，前緣與外緣有黑色邊，基部有三條橫向金屬綠色線條，內中線有兩條不連續的金屬綠色線條，中線有一條黑線，黑線靠基部有一條金屬藍色線條，靠外緣有一條金屬紫色線條，亞外緣有一條金屬紫色帶；後翅為黑褐色，靠前緣有一小塊灰色斑，無其他翅紋；頭部背方為黑色，有兩條白色條紋；胸部背方為紅褐色，中央、兩側肩片各有一條金屬綠色線條；腹部為灰褐色，每節都有藍色環紋。

A Brief Introduction:
In Taiwan, Saptha angustistriata represents one of the four Saptha species and could be easily identified by wing pattern from the other species. However, another species, S. cypridia, which is widely distributed in SE Asia shares quite similar wing patter with this species. More comparisons of genitalia between the two species are necessary to clarify the taxonomic status of them.