Opselater

Opselater is a genus of click beetle (family Elateridae). They are one of several genera in the tribe Pyrophorini, all of which are bioluminescent. This genus was established by in 1975. After a revision of the genus by , she stated some members of this genus are polyphyletic with '' , which discouraged her from establishing any new genus in this part of Pyrophorini due to alternative resolutions and ambiguity.

==Description== Small; dark-brown. Pubescence short, dense yellowish or grey. Eyes in males slightly more developed than in females. Front prominent. Antennae reaching the hind angles of the prothorax, serrate from fourth segment onwards; third segment little longer than second, the two together of the same length of the fourth. Prothorax slightly convex, punctures variable. Luminous spots small, lateral, flat and visible also in the proepisternum. Mesosternal cavity sinusoidal and a little raised behind. Metacoxal plates little enlarged inwardly. Abdominal luminous organ small and lamellate. Elytral sides subparallel and rounded to apices. Male genitalia: median lobe very enlarged at the middle, with or without minute cuticular scales. Female genitalia: bursa copulatrix more or less spiraled, with long spines; accessory glands well developed; spermatheca well developed and median oviduct with sclerotized plates.