Anomala mahakamensis, Zorn, 2007

Zorn, Carsten, 2007, Notes on Anomala felicia A ,, 1910 and its relatives from Borneo with descriptions of six new species (Coleoptera: Scarabaeidae: Rutelinae), Beiträge Zur Entomologie = Contributions to Entomology 57 (1), pp. 81-91 : 87-89

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.

Figures

Figs 19-21: Color pattern of pronotum, lateral aspect; Fig. 19, Anomala felicia;

Figs 13-14: Aedeagus of Anomala mahakamensismahakamensis (holotype); Fig. 13, lateral aspect; Fig. 14, ventral aspect. Figs 15-16: Aedeagus of Anomala manserimanseri (holotype); Fig. 15, lateral aspect; Fig. 16, ventral aspect. Figs 17-18: Aedeagus of Anomala sarawakensis (syntype); Fig. 17, lateral aspect; Fig. 18, ventral aspect. scale = 1 mm.

Fig. 22:Tistribution map.