''Neolucanus castanopterus'' is a

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

of the family Lucanidae.It is found in south and southeast Asia, including India and Thailand.

References

Lucaninae Beetles described in 1831 {{Lucanidae-stub