Description wikipedia

Acrossidius tasmaniae, the black-headed cockchafer or black-headed pasture cockchafer, also known as the Tasmanian grass grub, is a species of scarab beetle in the family Scarabaeidae. It is native to south-eastern Australia, occurring in Tasmania, Victoria, South Australia and New South Wales. The species inhabits open grassy environments such as grasslands, pastures and lawns. Larvae feed on plant foliage and are considered an agricultural pest, causing severe damage to winter pastures and cereals when densely populated. Acrossidius tasmaniae was introduced to New Zealand in the early 20th century, where it is regarded as a severe pest in dryland farming systems. The species has also been intercepted in Europe via international shipping. Despite its pest status, Acrossidius tasmaniae is an important food source for many species such as potoroid mammals, insectivorous birds, and parasitic wasps and flies.