The Mouse Blue (Lepidochrysops puncticilia) is a butterfly of the Lycaenidae family. It is found in South Africa, where it is found in the West Cape. The wingspan is 27–29 mm for males and 27–30 mm for females. Adults are on wing from September to October in one generation at low altitudes and from October to December in mountainous areas. The larvae feed on Selago fruticosa and Dichisma species.