Brown Tree Frog, Litoria ewingii

The Brown Tree Frog (Litoria ewingii) is a species of tree frog endemic to most of southern Victoria, eastern South Australia, southern New South Wales, throughout Tasmania, including Bass Strait Islands, where it is the most frequently encountered frog in that state. It has been introduced to New Zealand, where it can be locally abundant.

This frog can reach 45 millimeters long. It is pale to dark brown on the dorsal surface, with a broad darker patch starting at the eyes and covering most of the back, although pure green and green striped color morphs are also common. A dark band starting at the nostril runs across the eye and tympanum to the shoulder, and a pale white stripe below this runs from the mouth to the arm. The backs of the thighs are orange colored, and no black marbling is present.

It is found in a wide range of habitats, including forests, farmland, heathland, semiarid areas, suburban areas, and alpine regions. They are especially common in portions of suburban Adelaide, Melbourne, and Hobart, where they are often observed upon window panes at night, attracted by flying insects. The males make a whistling weep-weep-weep call from beside or floating in the water of dam impounds, ditches, ponds, and stream-side pools. The males call all year round, especially after the rain. The eggs are easily identifiable, being wound around submerged grass stems, sticks, and aquatic vegetation. These frogs can freeze and survive.

Image Caption: Brown Tree Frog, Litoria ewingii, in Ensay, Victoria, Australia. Credit: Benjamint444/Wikipedia