Heterometrus serratus is a species of scorpion in the family Buthidae endemic to Sri Lanka where it is restricted to southern parts.

[1][2] This large scorpion has a total length of about 100 to 130 mm long.

Pedipalp patella lacks a pronounced internal tubercle.

Carapace smooth, and glossy medially, with marginal granules.

Dorsal and dorsolateral carinae of metasomal segments are granulated.