Urothemis aliena, commonly called the red baron,[1] is a species of dragonfly native to northern and eastern Australia and New Guinea. It belongs to the family Libellulidae.[2] [3] This species is typically found in riverine lagoons and ponds. Urothemis aliena is a medium-sized dragonfly (wingspan 85mm, length 45mm). It is characterized by its vibrant red body and features two dark spots on segments eight and nine of its abdomen. The hindwing displays a dark triangular-shaped reddish-brown mark at the base. This species is found across Australia, ranging from Broome, Western Australia along the northern region of the continent to the southern border of Queensland.