Chrysolopus spectabilis
（重定向自Diamond Beetle）
![](/Images/godic/202501/08/Diamond_Weevil_Side1533.JPG")
![](/Images/godic/202501/08/Diamond_Beetle_Distribution1533.png")
![Adult on white](/Images/godic/202501/08/Botany_Bay_Weevil_Feb091533.jpg")
![Acacia mearnsii, one of the 28 Acacia species which C. spectabilis feeds on.](/Images/godic/202501/08/Acacia_mearnsii_blossoms1533.jpg")
Chrysolopus spectabilis (Common names include Botany Bay diamond weevil, Botany Bay diamond beetle and sapphire weevil) is a species of weevil found in south-eastern Australia. It is up to 25 mm (1.0 in) long, with metallic green patterns on a black background. It is a specialist, only known from 28 species of Acacia. It was discovered during James Cook's first voyage, and became the first insect to be described from Australia.