Doliops, Waterhouse, 1841

Barševskis, Arvīds, 2021, Two new species of the tribe Pteropliini Thomson, 1860 (Coleoptera: Cerambycidae) from the Philippines, Baltic Journal of Coleopterology 21 (2), pp. 147-150 : 148-149

Doliops du sp. nov.

Fig. 1 - 2

Type material. Holotype, male: PHILIPPINES: Leyte Isl., / Mahaplag , 08.2020. / local collector leg. / [handwritten] ; HOLOTYPUS: / Doliops / du sp. nov. / A.Barševskis desc. 2021[red, handwritten] ( DUBC) .

General distribution: Philippines; Leyte Island.

Description. Body length: 12.9 mm, body width: 5.3 mm. Dorsal surface of body metallic cuppercolored, shiny, with spots of greenish scales.

Head elongate, narrower than pronotum, metallic shiny, with very fine dorsal microsculpture, covered with very fine and pale pubescence. Frons slightly convex, very shiny. Middle portion between eyes with wide elongate band of greenish scales, with longitudinal very thin and shiny line without scales. Eyes flattened, not extended, bilobate. Cheeks narrow, not extended, covered with greenish scales. Clypeus brown, narrow, shiny. Labrum metallic-green, shiny, covered with sparse pubescence. Mandibles massive, shiny, with acute apices. Antennae slender, relatively short; antennomeres 1-3 dark, metallic, shiny; antennomere 3 elongate, darkened and widened apically, with row of black setae and very fine pubescence; antennomere 4-5 darkened apically, with very fine pubescence in basal portions; remaining antennomeres brown, with very fine pubescence.

Pronotum subcylindric, convex, slightly transverse, wider than head and narrower than elytra. Basal part with two thin, transverse, parallel and slightly curved lines, and apical part with one impressed line. Lateral disc of pronotum between apical and basal lines shiny, smooth in middle, with some very sparse punctures and very fine transverse microsculpture. Lateral sides rounded, without visible angles, with wide oval circle of greenish scales. Scutellum rounded apically, metallic shiny, covered with very sparse and dark pubescence. Pars stridens not visible under basal margin of pronotum.

Elytra wide, convex, metallic cupper-coloured, shiny. Shoulders visible, but not protruded apically. Lateral and dorsal parts of each elytron behind shoulders with large pentagonal spot of greenish bands. Surface of elytra behind middle with second transverse band, widened in middle of longitudinal oval spot, inside with small area without scales. Apex of elytra with third semitriangular spot of bands of greenish scales.

Legs metallic, shiny, with very fine microsculpture. Apical part of tibia covered with dense, dark pubescence and setae. Tarsomeres metallic, shiny, covered with dark pubescence and setae. Ventral side of body metallic, shiny, with lateral spots of greenish scales.

Male genitalia. Aedeagus curved, sickle-shaped, with acute apex of lamella ( Fig. 2).

Female unknown.

Differential diagnosis. Based on the coloration of the body, the new species is similar to D. um Barševskis, 2018, but differs from it by the different pattern of pronotum and elytra. Lateral and dorsal parts of each elytron of a new species behind shoulders with large pentagonal spot of bands of greenish scales, and with second transverse band behind middle, widened in middle in longitudional oval spot, and inside with small area without scales and third semitriangular spot of bands of apical greenish scales. Pronotum of a new species with wide oval circle of greenish scales, while D. um with different shapes of the pronotal and elytral drawing of greenish scales (see for details Barševskis (2018).

Etymology. The specific epithet of a species is derived from the abbreviation of Daugavpils University (DU), which is celebrating its 100th anniversary this year. Daugavpils University has an internationally recognized Coleopterological Research Center with a collection of beetles. I dedicate this species to Daugavpils University on its 100th anniversary!

A new species of the genus Doliops Waterhouse, 1841 ( Coleoptera : Cerambycidae ) from Leyte Island...