Biancaea decapetala, commonly known as shoofly, Mauritius or Mysore thorn or the cat's claw, is a tropical tree species originating in India.

B. decapetala has been introduced to Fiji, French Polynesia, Hawai‘i, New Caledonia, Norfolk Island, Australia, China, Japan, Korea, Indonesia, Malaysia, Philippines, Thailand, Vietnam, Mauritius, Réunion, Rodrigues, Kenya and South Africa.

Fruit are brown, woody pods, flattened, unsegmented, smooth, sharply beaked at apex, about 80 mm (3.1 in) long.

[citation needed] In Hawai‘i, where B. decapetala has the local name pōpoki, it forms impenetrable brambles, climbs high up trees, closes off pastures to animals and impedes forest pathways.

[citation needed] Mauritius Thorn has been employed in primate conservation to dissuade apes from entering farmland in West Africa.