Heteropteryx dilatata, also known as jungle nymph, Malaysian stick insect, Malayan jungle nymph, or Malayan wood nymph, is a large member of the Phasmatodea, commonly kept in captivity. It originates in Malaya and is nocturnal. This insect holds the world record for the largest egg laid by an insect. The eggs are about 1.3 cm (0.5 in) in length.