Colugo — the gliding mammals of the order Dermoptera

Species and taxonomy

Only two living species are widely recognized, both native to Southeast Asia. They are typically treated as distinct genera and can be listed as:

• Sunda (or Malayan) colugo — a widespread form on mainland and island Sundaland.
• Philippine colugo — restricted to parts of the Philippine archipelago.

Colugos are classified in their own order, Dermoptera. For an overview of mammalian gliders and related groups see gliding mammals, and for placement within mammal classification see annotations under Dermoptera.

Anatomy and gliding

The patagium is fur-covered and continuous around the body, creating a large surface area for lift. Limbs end in sharp claws for gripping bark, and the head is flattened with large eyes suited for low-light activity. These adaptations permit efficient, quiet travel between trees while avoiding ground predators. Reported glide distances vary by terrain and vegetation structure; individuals regularly traverse dozens of meters in a single glide.

Behavior, diet and reproduction

Colugos are primarily nocturnal and spend almost all of their lives in trees. Their diet is mainly composed of leaves, young shoots, flowers and some fruit, classifying them as largely folivorous with occasional frugivory. Reproduction tends toward small litters — commonly a single offspring — which clings to the mother following birth. Social behavior is generally solitary or in small family groups.

Distribution, conservation and significance

Found across lowland and hill forests in parts of mainland Southeast Asia and many islands of the region, colugos depend on intact canopy to move and forage. Habitat loss from logging and conversion to agriculture poses the greatest threat in many locales, and they are sometimes hunted locally for food. For conservation context and regional notes see resources indexed under related primate and mammal pages and distribution notes at Southeast Asian fauna references.

Fossil and molecular evidence indicate Dermoptera has an ancient lineage and a long evolutionary relationship with other euarchontans (primates and tree-shrews). Their specialized morphology and quiet, arboreal lifestyle make colugos an important subject for studies of gliding locomotion, forest ecology and the evolution of mammalian aerial movement.