A new large trapdoor spider species of the genus Heligmomerus Simon 1892 (Araneae, Mygalomorphae, Idiopidae) from Western Ghats, India

A new species of trapdoor spider, Heligmomerus maximus sp. nov. is described from southern Western Ghats of Kerala state, India. The new species differs from known species of the genus from India and Sri Lanka in possessing a band of thorn-like spinules on coxa IV. Moreover it is the largest species of the genus with adult females reaching a length up to 32 mm and the burrows are shallow compared with other species of the genus.