Microdytes maculatus, is a species of predaceous diving beetle found in India, Thailand, Southern Andaman Islands, Sri Lanka, China, Thailand, Laos and Myanmar.

[1][2] This smaller species has an oblong-oval, slightly rhomboid, and moderately convex body.

Pronotum rufo-testaceous and finely bordered, regularly rounded lateral margin.

Elytra ferrugineous, with a distinct testaceous transverse band on the base.

Epipleura, prothorax, metacoxae medially and abdomen are testaceous on ventral side.