Caenorhinus (Flavodeporaus) ghatensis, 2022

Legalov, Andrei A., 2022, A new species of the genus Caenorhinus Thomson, 1859 (Coleoptera, Rhynchitidae) from South India, Baltic Journal of Coleopterology 22 (1), pp. 119-122 : 120-122

Caenorhinus (Flavodeporaus) ghatensis

Legalov, sp. nov.

( Fig. 1 )

Type material: Holotype. Male ( NMNH), S India, Karnataka, Western Ghats, 20 km W Talquppa, Jog Falls , 14°14’N, 74°44’E, 22­28.V.2002, P.Pacholatko.

Description. Male: Body yellow, covered with decumbent light coloured hairs.Apex of rostrum, tarsomere 3 and tarsal claws brownish­yellow. Eyes, antennae dark­brown, tibiae, tarsomeres 1­ 2, 5 brownish­black.

Rostrum 0.7 times as long as pronotum, 2.5 times as long as wide at apex, 2.9 times as long as wide at middle and 2.8 times as long as wide at base, slightly curved, distinctly expanded to apex, weakly flattened, subglabrous in apical part, coarsely punctate in basal part. Eyes large, strongly convex, suboval, finely faceted. Forehead weakly impressed, 1.3 times as wide as width of rostrum basally, finely punctate. Temples quite long, 0.6 times as long as eye. Vertex convex, finely punctate. Head narrowed behind eyes. Neck well defined, transversely wrinkled. Antennae slender, inserted in middle of rostrum, almost extend middle of pronotum. Antennomeres 1 and 2 long­oval, equal in width.Antennomere 1 2.0 times as long as wide in apex.Antennomere 2 1.9 times as long as wide, 0.9 times as long as antennomere 1. Antennomeres 3–8 subconical. Antennomeres 3–7 equal in width. Antennomere 3 2.8 times as long as wide, 1.3 times as long as and 0.9 times as narrow as antennomere 2. Antennomere 4 2.3 times as long as wide, 0.8 times as long as antennomere 3. Antennomeres 5 and 6 equal in length. Antennomere 5 2.0 times as long as wide, 0.9 times as long as antennomere 4. Antennomere 7 1.8 times as long as wide, 0.9 times as long as antennomere 6. Antennomere 8 1.4 times as long as wide, 0.9 times as long as and 1.2 times as wide as antennomere 7. Antennal club strongly not compact, 0.7 times as long as antennomeres 2–8 combined. Antennomeres 9­ 11 equal in width. Antennomere 9 2.0 times as long as wide, 2.0 times as long as and 1.4 times as narrow as antennomere 8. Antennomere 10 1.8 times as long as wide, 0.9 times as long as antennomere 9. Antennomere 11 2.4 times as long as wide, 1.3 times as long as antennomere 10.

Pronotum campanulate, 1.6 times as long as wide at apex, subequal to wide in middle and 1.1 times as long as wide at base. Disk weakly convex, finely punctate. Scutellum trapezoid, sparsely punctate.

Elytra 1.5 times as long as wide at base, 1.3 times as long as wide at middle and at apical fourth, 2.0 times as long as pronotum, without metallic lustre. Humeri slightly flattened. Elytral striae distinct. Scutellar striole absent. Stria 9 full, merging with stria 10 near metacoxa. Interstriae weakly convex, subequal in wide to elytral stria width, punctate.

Prosternum finely punctate. Pre­ and postcoxal portions of prosternum short. Procoxal cavities contiguous. Metanepisternum 2.5 times as long as wide, finely punctate. Metaventrite subequal in length to metacoxa length, convex, finely punctate.

Abdomen convex, punctate. Ventrites 1 and 2 fused. Ventrite 1 about 0.6 times as long as length of metacoxa. Ventrite 2 1.2 times as long as ventrite 1. Ventrite 3 0.6 times as long as ventrite 2. Ventrite 4 subequal to ventrite 3. Ventrite 5 0.7 times as long as ventrite 4. Part of propygidium and pygidium exposed.

Procoxae large, conical. Metacoxae transverse, without tooth. Femora weakly thickened, with costate dorsal margin in apical one third. Tibiae almost straight, flattened, with costate dorsal margin. Protibiae without mucro. Tarsi long. Tarsomere 1 long­conical. Tarsomere 2 conical. Tarsomere 3 bilobed. Tarsomere 5 elongate. Tarsal claws divergent and dentate.

Armament of endophallus weakly sclerotized

( Fig. 1b ).

Length of body (without rostrum): 4.2 mm. Length of rostrum: 0.9 mm.

Diagnosis. This new species is similar to Caenorhinus inclinatus ( Voss, 1938) distributed in East India (Assam) but differs in the pronotum without wrinkling, antennomere 8 much longer than wide, and larger body sizes; from Caenorhinus malabarensis ( Voss, 1957) distributed in South India (Tamil Nadu and Kerala) in the pronotum of equal length and width, forehead wider than base of the rostrum, quite wide intervals of elytra, and antennomere 8 much longer than wide.

Etymology. From Ghats mountains.

Distribution. South India: Western Ghats.

Legalov A.A.

Figures

Fig. 1. Caenorhinus ghatensis sp. nov. male, holotype: a – habitus, dorsally, b – aedeagus, dorsally, c – aedeagus, laterally, d – habitus, habitus. Scale bar = 1.0 mm for a, d; 0.5 mm for b­c.