D. v. acropyge Bates, 1887 D. v. longiceps Paulian, 1938 Deltochilum valgum is a nocturnal, Neotropical species of dung beetle in the family Scarabaeidae, which has evolved a predatory lifestyle.

[2] While most other members of the true dung beetle subfamily feed on faeces or decomposing matter, D. valgum is highly specialised for eating millipedes;[3][4] such a transition from scavenger to carnivore is rare.

[5] Whether this is novel adaption in this species or an ancestral adaption in the genus is unclear; at least two other species, Deltochilum kolbei and D. viridescens, which are not particularly closely related to D. valgum, also kill and feed on millipedes.

In a typical attack, the beetle grasps the millipede's body with its mid and elongated, curved hind legs and then bites into the coiling prey at a joint between body segments.

[7] Two subspecies are recognised: D. v. acropyge Bates, 1887 and D. v. longiceps Paulian, 1938.