Nephius philippinensis Legalov, 2022

Legalov, Andrei A., 2022, Four new species of the genera Dryophthoroides Roelofs, 1879 and Nephius Pascoe, 1885 (Coleoptera, Curculionidae) from Oriental and Papuan Regions, Ecologica Montenegrina 58, pp. 42-49 : 46-48

Nephius philippinensis Legalov , sp. nov.

https://zoobank.org/ urn:lsid:zoobank.org:act:EF98C8E9-C666-4C5F-A1BD-9517CADF7E6E

( Fig. 2B )

Type material: Holotype, female ( ISEA), PHILIPPINES: Mindanao, Bukidnon, Kalatungan , IX.2014 . Paratype, female ( ISEA), Bukidnon, Panamokan , XI.2016 .

Description. Female: Body black, with matted pubescence. Antennae, apex of tibiae and tarsi reddishbrown. Head nearly conical. Mandibles not large. Rostrum long, 1.1 times as long as pronotum, 4.9-5.1 times as long as wide at apex, 3.9-4.8 times as long as wide at midlength, 3.7-4.5 times as long as wide at base, curved. Apex of rostrum smooth. Eyes large, not protruding from contour of head, linear, narrowly separated beneath. Forehead wide, flattened, 1.1 times as long as rostrum base width, densely punctate. Antennal scrobes directed ventrally to base of rostrum. Antennae inserted in apical fourth of rostrum. Scape long, 4.6 times as long as wide at apex, not reaching eye. Funicle 6-segmented. Second-seventh antennomeres conical. Second antennomere about 1.6 times as long as wide at apex, about 0.2 times as long as and about 0.6 times as narrow as scape. Third antennomere about 1.8 times as long as wide at apex, subequal in length and about 0.9 times as long as second antennomere. Fourth antennomere about 0.8 times as long as wide at apex, about 0.4 times as long as and same width as third antennomere. Fifth antennomere about 0.7 times as long as wide, equal in length and about 1.1 times as wide as fourth antennomere. Sixth antennomere about 0.6 times as long as wide, about 1.2 times as long as and about 1.2 times as wide as fifth antennomere. Seventh antennomere about 0.6 times as long as wide, equal in length and about 1.1 times as wide as sixth antennomere. Antennal club compact, about 2.1 times as long as wide, about 0.7 times as long as second-seventh antennomeres combined, with subconical tomentose apex. Pronotum campanulate, 1.2-1.5 times as long as wide at apex, slightly longer than wide at midlength, about 1.1 times as long at pronotal base. Pronotal disk weakly convex dorsally, quite sparsely punctate, with two small pilose ridges at base and with median longitudinal groove. Intervals between points larger than their diameter. Sides nearly straight. Base of pronotum about 0.7 times as narrow as base of elytra. Scutellum small, triangular. Elytra nearly subparallel, 1.7-1.8 times as long as wide at base and at midlength, about 2.2 times as long as wide at apical fourth, 2.3-2.5 times as long as pronotum. Humeri weakly convex. Elytral striae distinct. Ninth stria short, fused with tenth stria at level of metacoxae. Interstriae weakly convex, wide, 3.0-3.5 times as wide as striae width. Odd interstriae with row of weak and short longitudinally oriented and pilose ridges. Prosternum punctate, with strong postocular lobes. Precoxal portion of prosternum long, equal to procoxal cavity. Postcoxal portion of prosternum about 0.4 times as long as procoxal cavity. Procoxal cavities contiguous. Mesocoxal cavities narrowly separated. Metaventrite 2.2 times as long as length of metacoxa, weakly convex, sparsely punctate. Abdomen weakly convex ventrally, punctate. First ventrite 0.6 times as long as length of metacoxa. Second ventrite 1.2 times as long as first ventrite. Third ventrite about 0.6 times as long as second ventrite. Fourth ventrite slightly longer than third ventrite. Fifth ventrite 1.9 times as long as fourth ventrite. Procoxae conical. Mesocoxae spherical, narrowly separated. Metacoxae transverse. Femora slightly thickened, without tooth. Tibiae weakly curved, with large uncus. Tarsi long. First - third tarsomeres conical, with erect setae ventrally. Fifth tarsomere elongate. Tarsal claws free, divergent. Total body length (without rostrum) 5.1-5.8 mm. Length of rostrum 1.5-1.7 mm.

Differential diagnosis. The new species differs from N. mindanaoensis Legalov, 2020 from Mindanao ( Philippines) in the sparsely punctate pronotum with a median longitudinal groove and without four pilose ridges before the middle, elytral interstriae with weak pilose ridges, and weaker curved rostrum.

Etymology. Named after the Philippines.

Localisation. Philippines, Mindanao Is., Bukidnon Prov.

Figures

Figure 2. Nephius spp., holotypes, habitus: A – N. continentalis sp. nov., dorsal view; B – N. philippinensis sp. nov., dorsal view; C – N. continentalis sp. nov., lateral view. Scale bar = 1.0 mm.