Hyperstoma marginata Wittmer, 1979 (Missp.)

Hyperstoma marginatum is a species of firefly beetle endemic to Sri Lanka.

The 1 to 2 antennomeres are yellow to light brown in color, and antennomeres 3 to 11 are dark brown in color.

Penultimate abdominal tergum is straight basally which are furnished with two small rounded tubercles.

Male genitalia possess a V-shaped phallobase with robust paramerae.