Luzonorhynchites crassifemoratus Legalov, 2018

Legalov, A. A., 2018, A new genus of the tooth-nosed snout weevils (Coleoptera: Rhynchitidae) from Philippines, Far Eastern Entomologist 359, pp. 1-6 : 2-4

Luzonorhynchites crassifemoratus Legalov , sp. n.

Figs 1–4

TYPE MATERIAL. Holotype – ♂ ( ISEA), Philippines: North Luzon , Apayao

Prov., Conner, III.2015. Paratypes: Philippines: 1♂ ( ISEA), idem ; 1♂ ( ISEA), idem ,

view; 2 – paratype, female, habitus, dorsal view; 3 – holotype, aedeagus, dorsal view; 4 –

holotype, tergite 8, dorsal view. Scale bar 1.0 mm for 1 and 2. Scale bar 0.2 mm for 3 and 4.

V.2015; 1♀ ( ISEA), idem, IV.2016 ; 1♂ ( ISEA) , 1♀ ( ISEA), North Luzon , Ifugao

Prov., Pola, VIII.2014; 1♀ ( ISEA), Eastern Luzon, Isabela Prov., Dindin , VIII.2014 ;

1♀ ( ISEA), Eastern Luzon , Sierra Madre Mtr., Quirio Prov. , Nagtipunan, Tapsoy ,

III.2016.

DESCRIPTION. MALE. Body length (without rostrum) 4.2-4.9 mm. Rostrum length 1.4-2.0 mm. Body black, covered with short dense decumbent and sparse long erect hairs. Elytra brown. Head, pronotum, scutellum and abdomen red.

Head subparallel behind eye. Mandibles externally edentate. Rostrum long,

weakly curved, about 1.3 times as long as pronotum, about 4.2 times as long as wide at apex, about 6.1 times as long as wide in middle, about 5.2 times as long as wide at base, sparsely punctate, with median carina from base to antennal insertion. Eyes large, convex and rounded. Forehead flattened, finely punctate, distinctly wider than rostrum base width. Temples quite short. Antennae long, inserted before middle of rostrum, reaching basal third of pronotum. Antennomere 1 long-oval. Antennomeres

2-5 long-conical. Antennomere 2 little narrower than antennomere 1. Antennomere 3

narrower than antennomere 2. Antennomeres 1-3 subequal in length. Antennomere

4 longer than antennomere 3. Antennomere 5 shorter than antennomere 4.

Antennomeres 6 and 7 long-oval. Antennomere 6 shorter and wider than antennomere 5. Antennomere 7 little shorter and wider than antennomere 6.

Antennomere 8 oval, shorter and wider than antennomere 7. Antennal club loose and wide, weakly fattened. Antennomere 9 as long as antennomeres 6-8 together taken. Antennomere 10 shorter than antennomere 9. Antennomere 11 narrower than antennomere 10.

Pronotum almost bell-shaped, about 1.4 times as long as wide at apex, narrower to wide in middle, almost subequal to at base. Disk weakly convex, densely transversely wrinkly-punctate. Sides weakly rounded. Scutellum almost rhomboidal.

Elytra about 1.7 times as long as wide at base, about 1.6 times as long as wide in middle, about 2.4 times as long as wide at apical fourth, about 2.5 times as long as pronotum. Humeri slightly flattened. Elytral striae distinct. Striae 9 striae merge with striae 10 before metacoxa. Intervals weak convex, finely punctate. Epipleura narrow.

Pre- and postcoxal portions of prosternum short. Procoxal cavities contiguous.

Metanepisternum quite wide, finely punctate. Metaventrite weakly convex, punctate,

little shorter than metacoxal cavity. Abdomen convex, finely puncate. Ventrites 1

and 2 fused. Ventrite 2 longer than ventrite 1. Ventrite 3 shorter than ventrite 2.

Ventrite 4 shorter than ventrite 5. Ventrite 5 longer than ventrite 4 and equal in length to ventrite 3.

Procoxae large, conical, with pit and hair bunches. Metacoxae transverse. Tro-

chanters small. Femora thickened, lacking teeth. Metafemora strongly thickened.

Tibiae with two apical spurs. Pro- and mesotibiae almost straight, with costate dorsal margin. Metatibiae curved, weakly widened in apical third. Tarsi long. Tarsomere 1

conical. Tarsomere 2 wide-conical. Tarsomere 3 wide-bilobed. Tarsomere 5 elongate.

Tarsal claws divergent, with long teeth.

FEMALE. Body length (without rostrum) 4.1-5.1 mm. Rostrum length 1.3-1.7

mm. Rostrum thicker. Antennae inserted closer to base of rostrum. Procoxae lacking pit and hair bunches. Metafemora little narrower.

Figures

Figs. 1–4. Luzonorhynchites crassifemoratus sp. n. 1 – paratype, male, habitus, dorsal