Year 2009

Examples of Invasive Alien Species

Click here to return to gallery...

Title: Harmonia axyridis (Harlequin ladybird)
Description: Harmonia axyridis (lady beetle) is native to Asia and has been used extensively around the world for biological control of various aphid species. While it is a popular control agent, it has also brought with it several negative effects. Its establishment appears to decrease the diversity of native Coccinellidae. Harmonia axyridis can also quickly become a human nuisance when it seeks shelter during the winter months and takes up residency in the walls and insulation of houses and other structures. Surprisingly, Harmonia axyridis has also attained status as a pest of fruit production; particularly in the vineyards of the Midwestern USA. (Credit: Global Invasive Species Database)
Date: 2009-02-12
Credits: Horst Freiberg