Medeopteryx taprobana sp. nov. (Coleoptera: Lampyridae: Luciolinae): A new species from coastal habitats in Southern, Sri Lanka

We present the first record of the firefly genus Medeopteryx Ballantyne from Sri Lanka with descriptions of male, female, and larvae of a new species, Med. taprobana De Silva, Gamage & Wijekoon sp. nov., from a mangrove–associated coastal habitat in Matara, Southern Sri Lanka, with their phylogenetic placement based on mitochondrial DNA barcoding. This new species is distinguished from other Medeopteryx by not having trisinuate posterior projections (with a weak median posterior projection) of ventrite 7 and other specific characteristics of the aedeagal sheath. An updated list of species and a key to Medeopterx described species in the world are presented. • For the first time, fireflies of the genus Medeopteryx Ballantyne have been recorded in Sri Lanka. • Medeopteryx taprobana is a new species found in Sri Lanka. • Males, females, and larvae of Med. taprobana were found in a coastal habitat with mangroves. • The phylogeny of Med. taprobana was determined using mitochondrial DNA barcoding and morphological investigation.