Anomala mahakamensis sp. n.

Holotype:  “Oost-BORNEO Sangasanga-dalem | coll. Zoölogisch Museum acq. 1938” (ZMAN).

Description and Diagnosis:

Length. 11.1 mm; width. 6.9 mm. Anomala mahakamensismahakamensis shares most morphological characters with A. felicia as described above. With A. snizeki, A. kaltengensis, A. bifida, A. kinabalensis and A. aequalisaequalis it has in common a yellow lateral marking of the pronotum of which the inner limitation is not notched but usually straight from anterior to posterior margin (Fig. 20). From these five species, A. mahakamensis can only be distinguished by the shape of the aedeagus which is extremely similar to that of A. kinabalensis . Both, parameres and ventral plate are strongly elongate. The parameres are angled apically and bent downwards. The extension of the ventral plate is apically narrower than in A. kinabalensis (Figs 13-14).

Distribution: Anomala mahakamensismahakamensis is only known from Sangasanga-dalam in the province of Kalimantan Timur (East Kalimantan) (Fig. 22).

Etymology: The new species is named after the Mahakam river in East Kalimantan.