Neolaemosaccus luzonensis Legalov, 2020

Legalov, A. A., 2020, A new species of the genus Neolaemosaccus Hustache, 1937 (Coleoptera: Curculionidae) from the Philippines, Far Eastern Entomologist 416, pp. 10-14 : 11-13

Neolaemosaccus luzonensis Legalov , sp. n.

http://zoobank.org/NomenclaturalActs/ 51A67DB0-37B9-499C-91FA-1384EE1F1666

Figs 1–8

TYPE MATERIAL. Holotype – ♂, Philippines: North Luzon , Nueva Ecja Prov.,

Caranglan, January 2018 [ ISEA]. Paratypes: Philippines: Western Luzon , Zambales Prov. ,

Subic, November 2015, 4♂ [ ISEA]; Western Luzon , Sierra Madre Mtr., Quirino Prov. ,

Disimungal, November 2015, 1♂, 1♀ [ ISEA]; North Luzon , Mountain Prov. , Barlig, March

2016, 1♂ [ ISEA] .

DESCRIPTION. MALE. Body length (without rostrum) 3.7–4.3 mm. Rostrum length

0.7–0.8 mm. Body black, or elytra and legs brownish, naked dorsally, vernally cowered with dense plumose light scales. Antennae brown. Head conical. Rostrum almost straight, two times as long as wide at apex, 2.1 times as long as wide in middle and at base, 0.5 times as long as pronotum. Back of rostrum weakly flattened, densely punctate, without carina. Mandibles small. Eyes large, transverse, not protruding from contour of head, distinctly separated.

Anterior margins of eyes not emarginate. Forehead flat, narrow, 0.2 times as long as rostrum base width. Antennal scrobes laterally, oblique, directed to eye, visible dorsally in first third.

Antennae long, inserted at apical third of rostrum. Antennomere 1 long, reaching eyes. Antennomeres 2 and 3 long-conical. Antennomere 3 narrower than antennomere 2. Antennomeres

4–5 short-conical. Antennomeres 8 slightly transverse. Antennal club compact, about 3.0

times as long as wide in middle, slightly shorter than flagellum, tomentose. Antennomeres 9

and 10 subequal in length. Antennomere 11 1.6 times as long as antennomere 10. Pronotum subquadrate, 1.8 times as long as wide at apex, subequal to wide in middle and at base.

Anterior collar present. Disk distinctly convex, densely punctate. Distances between points narrower than diameter of points. Lateral margins convex. Base semicircular. Scutellum distinct, rectangular, transverse. Elytra 1.3 times as long as wide at base, 1.1 times as long as wide in middle, 1.2 times as long as wide at apex, 1.4 times as long as pronotum, subparallel,

narrowed at apical fourth. Humeri smooth. Interstriae wide, 3.0–3.3 times as long as wide of striae, flat, with very small protuberances. Elytral striae distinct, deep. Striae 9 not merge with striae 10 near metacoxa. Prosternum with weak postocular lobes. Pre- and postcoxal portions of prosternum short, subequal in length. Procoxal cavities widely separated. Meta-

nepisternum wide. Mesocoxal cavities separated. Metaventrite convex, densely punctate, 1.8

times as long as length of metacoxal cavity. Abdomen convex, finely puncate. Ventrites 1

and 2 long, fused, weakly flattened. Ventrite 1 1.5 times as long as length of metacoxal cavity. Ventrite 2 0.7 times as long as ventrite 1. Ventrites 3 and 4 short, equal in length.

Ventrite 3 0.6 times as long as ventrite 2. Ventrite 5 1.6 times as long as ventrite 4, with middle transverse row of points, without anal setae. Procoxae large, subspherical. Femora and tibiae coarsely punctate. Femora thickened, with large teeth on middle. Profemora with female, habitus, dorsal view; 3 – holotype, aedeagus, dorsal view; 4 – holotype, habitus,

lateral view; 5 – paratype, female, rostrum and head, dorsal view; 6 – paratype, male,

abdomen; 7 – paratype, female, abdomen; 8 – 8th sternite, female. Scale bar 1.0 mm for figs

1, 2, 4–7 and 0.5 mm for figs 3, 8.

file on dorsal surface comprising number of parallel raised ridges. Tibiae weakly curved,

with large uncus, mucro and two groups of setae at apex. Meso- and metatibiae with oblique apical comb of setae. Tarsi long. Tarsomeres 1 and 2 conical. Tarsomere 2 shorter and wider than tarsomere 1. Tarsomere 3 wide-bilobed. Tarsomere 5 elongate. Tarsal claws free, paired,

of equal lengths, without teeth.

FEMALE. Body length (without rostrum) 4.5 mm. Rostrum length 0.8 mm. Body brown.

Rostrum 2.4 times as long as wide in middle and at base, 0.6 times as long as pronotum.

Pronotum 1.5 times as long as wide at apex, 0.9 times as long as wide in middle, subequal to wide at base. Elytra 1.3 times as long as wide at base, 1.1 times as long as wide in middle,

1.4 times as long as wide at apex, 1.3 times as long as pronotum. Interstriae 3.3–4.6 times as long as wide of striae. Ventrites 1 and 2 weakly concave. Ventrite 2 0.6 times as long as ventrite 1. Ventrites equal in length. Ventrite 3 0.6 times as long as ventrite 2. Ventrite 5 1.4

times as long as ventrite 4, convex in middle. Procoxae more narrowly separated.

COMPARISION. The new species is similar to N. compactus (Lea, 1896) from Australia but differs in the larger body sizes, brown antennae, longer rostrum, body vernally cowered with dense plumose scales and narrow elytral striae.

DISTRIBUTION. Philippines: Luzon (Fig. 10).

ETYMOLOGY. From name of Luzon.

octagon – N. luzonensis, sp. n.; circle – N. laemosaccus luzonensis sp. n. in petulans (Pascoe, 1885); pentagon – N. longiceps Luzon.

(Pascoe, 1873); triangle – N. insularis (Pascoe,

1885); square – Australian species.

Figures

Figs. 1–8. Neolaemosaccus luzonensis: 1 – holotype, habitus, dorsal view; 2 – paratype,