Stag Beetle (female)
Prosopocoilus
Observed attracted to electric lights at Kakamega Forest, Kenya, Africa. Oct. 2016. Length about 15mm. Possible id was provided by Rob Westerduijin.
Stag beetle grubs must develop in a rotting log or root crown and so their biodiversity would be adversely impacted by people gathering dead wood from a forest ecosystem preserve. Males have hugely enlarged mandibles, but females' are small.