Phalanger maculatus, commonly known as the spotted cuscus, is a marsupial native to New Guinea and nearby islands. It is arboreal, predominantly nocturnal, and has a distinctive spotted coat. Its prehensile tail aids in navigating forest canopies, while its diet consists mainly of leaves, fruits, and flowers.

Phalanger maculatus, commonly known as the Spotted Cuscus, is native to New Guinea and surrounding islands, including parts of the Solomon Islands. It is primarily found in the lowland and montane rainforests of these regions. The species is also present in the Cape York Peninsula of Australia.

The Spotted Cuscus inhabits tropical rainforests, characterized by high humidity, dense vegetation, and a warm climate. These areas typically receive significant annual rainfall, which supports lush plant growth and a diverse ecosystem. The species is arboreal, meaning it spends most of its life in trees, and it favors areas with dense canopy coverage.

As an arboreal marsupial, the Spotted Cuscus plays a vital role in its ecosystem, primarily as a herbivore. It feeds on leaves, fruits, and flowers, contributing to seed dispersal and plant growth within its habitat. Its presence supports the ecological balance by providing prey for higher predators and contributing to the cycling of nutrients within its environment.