Rompindessus jenisi Balke, Bergsten & Hendrich

Balke, Michael, Bergsten, Johannes, Wang, Liang-Jong & Hendrich, Lars, 2017, A new genus and two new species of Southeast Asian Bidessini as well as new synonyms for Oceanian species (Coleoptera, Dytiscidae), ZooKeys 647, pp. 137-151 : 138-139

Rompindessus jenisi Balke, Bergsten & Hendrich sp. n.

Holotype.

Male (NHMW). "Malaysia, Pahang, 40km W Rompin, Selendang, 29.4.-6.6., leg. I. Jenis, 1993".

Type locality.

Situated around Malaysia, Pahang, Selendang, between these points 2.622516°N 103.334934°E / 2.609909°N 103.382443°E / 2.643574°N 103.409337°E, it is not known where exactly this particular beetle was discovered. The altitude is around 50 to 250m ( Jeniš pers. comm.). According to satellite images in Google Earth, the lower elevations are now heavily transformed into oil palm plantations.

Description.

Habitus elongate oval. Measurements: TL = 2.45 mm, TL-H = 2.15 mm; MW = 1.1 mm; elytra 3.5 × longer than pronotum.

Colouration. Head, pronotum and elytron dark orange, the latter with few darker speckles (Fig. 1). Ventral side and appendages testaceous.

Surface sculpture. Head with distinct microreticulation posterior of occipital line; finer microreticulation along eyes and clypeus, frons without microreticulation and thus shiny / polished but with few setiferous punctures. Pronotum and elytron with distinct microreticulation and sparse setiferous punctation. Ventral surfaces polished, with faint and sparse setiferous punctation.

Structures. Head with distinct occipital line and broadly beaded clypeus (Fig. 1A). Pronotum with faint lateral bead and distinct basal striae, the latter are curved inwards (Fig. 1). Elytron without basal striae and without sutural line. Basal epipleural transverse carina absent. Metathoracic wings apparently fully developed (not dissected but seen from opening caused by previous removal of the last three ventrites). Pro- and mesotarsus appearing stout as they are distinctly dilated laterally.

Male. Median lobe of aedeagus simply curved (Fig. 2A, B), lateral lobes (parameres) of two parts and of general Bidessini type (e.g. as figured for Uvarus lacustris (Say, 1823), Leiodytes evanescens (Boheman, 1848), Platydytes incognitus Biström, 1988 and Bidessus unistriatus (Goeze, 1777) in Biström (1988)) (Fig. 2C).

Female. Unknown.

Etymology.

Named after Ivo Jeniš, discoverer of this species. The specific epithet is a substantive in the genitive case.

Distribution.

Only known from the type locality.

Habitat.

Unknown.