Obhylius arboricola Germann, 2021

Germann, Christoph, 2021, Two new Cotasteromimina from Borneo (Coleoptera, Curculionidae: Molytinae), Zootaxa 4933 (4), pp. 567-574 : 569-570

Obhylius arboricola Germann , sp. nov.

http://zoobank.org/ urn:lsid:zoobank.org:act:D07E4F69-7E77-429A-BDD8-91708E40A618

Holotype male: Malaysia, Sabah, Kinabalu: Poring Hot Spring , fogging on Aglaia macrophylla (Meliaceae) , primary forest, 07.11.1996, leg. A. Floren, coll. P. Sprick // genus aff. Pseudohylobius sp. det. C. Germann // Holotype Obhylius arboricola gen. and sp. nov. des. Germann 2020 [red label] //Barcode label: NMB-COLEO0010001 ( NMB) .

Description: Body and genitalia ( Figs 1 A-H) Length: 2.2 mm. Body dark auburn, antennae and tarsi auburn. Head globular, partly hidden in pronotum; frons horizontal, above eyes, rostrum straight, spatulate in dorsal view, bent downwards in lateral view, twice as long as wide, widening anteriad, surface striate; eyes weakly protruding from outline of head, oval ( Fig 1 D). Antennae inserted before middle of rostrum; scrobes oblique, posterior ends approximate. Antennal scape as long as width of rostral apex. Antennal funiculus consisting of 6 segments. First segment one third wider than second, half of second segment hidden in first one ( Fig. 1 H), following four segments transverse, steadily widening, club oval, twice as wide as last segment and as long as all funicular segments together. Club clothed with dense erect whitish hairs ( Fig. 1 H). Prothorax cylindrical (L/B: 1.0). Front margin strongly constricted. Elytra (L/B: 1.6), parallel sided to first third, from there rounded towards apex, outline of apex somewhat angular when viewed from above. Surface of head, prothorax and intervals on elytra clothed with bowed adjacent bristles, and long, raised, clubbed scales. Legs rather short and stout. Femoral teeth most prominent on profemora ( Fig. 1 J), smaller on meso- and metafemora ( Fig. 1 K). Male genitalia: Penis long and narrow. Penis body tubeshaped, bowed, with ostium and apex rounded, apodeme twice as long as penis body. The tegmen consists of an inverted bell shaped, feebly sclerotized tegminal ring, an apodeme of similar length as the apodemes of the penis body, and parameroid lobes which are one slightly shorter than the transverse diameter of the tegmen. In total, the tegmen is of about the same length as the penis, which has very long and slender apodemes twice as long as the length of the penis body.

Female unknown.

Derivation of name: The species name arboricola refers to the habitat of the new species in the canopy of an Aglaia macrophylla tree in primary forest.

Remarks: The new genus and species was included in the phylogenetic analyses by Germann & Grebennikov (2020) as genus «near Pseudohylobius ».

Figures

FIGS 1A-K. Habitus, genitalia and details of the male holotype of Obhylius arboricola Germann gen. nov., sp. nov. A-C. – habitus dorsal, ventral and lateral. D. – dorso-lateral view on head and rostrum. E-F. – penis in ventral and lateral views (tegmen and part of apodemes of penis broken). G. – ventrites. H. – antennal funiculus. I. – fringe of characteristic flattened bristles at front margin of prothorax. J. – tooth on left profemur, outer side. K. – tooth on left metafemur, inner side (Photos: C. Germann).