n. 小灰蝶

[ noun ]
small butterflies having striped markings under the wings
<noun.animal>

Hairstreak \Hair"streak`\ (-str[=e]k`), n.
A butterfly of the genus {Thecla}; as, the green hairstreak
({Thecla rubi}).

Thecla \Thec"la\, n.
Any one of many species of small delicately colored
butterflies belonging to {Thecla} and allied genera; --
called also {hairstreak}, and {elfin}.