Gynaecoserica tumba is a species of beetle of the family Scarabaeidae. It is found in western Sikkim.
Description Adults reach a length of about 5.4–6 mm. They have a light brown, elongate-oval body. The sides of the elytra, as well as some small spots on the elytra are darker and the pronotum has a slightly green metallic sheen. The upper surface is dull with some hairs except on the shiny forehead.Ahrens, D. 2004. Monographie der Sericini des Himalaya (Coleoptera, Scarabaeidae). Dissertation.de – Verlag im Internet GmbH, Berlin, 534 pp.
Etymology The species name is derived from the Sikkimese Bhutia language word Tumba (the beer brewed by local monks).
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