Doliops racsi Barševskis, 2019

Barševskis, Arvīds & Kairišs, Kristaps, 2019, Three new species of the genus Doliops Waterhouse, 1841 (Coleoptera: Cerambycidae), Baltic Journal of Coleopterology 19 (2), pp. 243-251 : 246-247

Doliops racsi Barševskis sp. n.

( Fig. 3A, B, C )

Type material. Holotype: male: Philippines: Luzon isl. , / Ilocos North, Adams, / 07.2019, local collector leg. [handwritten label] ; HOLOTYPUS: / Doliops racsi sp. n. / A.Barševskis det. 2019 [printed & handwritten red label] ( DUBC) .

Paratypes: 1 males, 4 females: Philippines: Luzon isl. , / Ilocos North , Adams , / 08.2019, local collector leg. [handwritten label] ( DUBC); Philippines: Luzon isl. , / Ilocos North , Adams , / 08.2019, local collector leg. [printed label] ( DUBC); Philippines: Luzon isl. , / Ilocos North , Adams , / 09.2019, local collector leg. [printed label] ( DUBC); Philippines: Luzon isl. , / Ilocos North , Adams , / 08.2019, local collector leg. [printed label] ( DUBC); Philippines: Luzon isl. , / Ilocos North , Adams, / 08.2019, local collector leg. [printed label] ( DUBC). All paratypes with additional red, printed and handwritten label : PARATYPUS: / Doliops racsi sp. n. / A.Barševskis det. 2019.

Distribution. Philippines: Luzon Island.

Description. Body black, with metallic luster. Elytra with spots of green and golden scales. Body length: 11.6–11.9 mm, largest width: 4.6– 4.8 mm.

Head almost square, parallel-sided, with not extended bilobate eyes. Middle portion of head between eyes with wide, impressed longitudinal band of green scales, and thin, straight median line. Frontal part of head behind of clypeus convex, glossy, with impressed longitudinal line, delicate punctation and pubescence. Longitudinal band of green scales starting from base of head, extending to level of middle length of eyes. Posterior portion of head glossy, bronze-colored. Cheeks under eyes with spot of green scales. Mandibles massive, furnished with some long black setae laterally. Labrum black, convex, glossy, concaved frontally, with pubescence, small punctures, and covered with long setae. Clypeus dark, shiny, transverse. Head with very fine microsculpture, punctation and fine tomentum (except metallic shiny posterior portion of head). Basal area of antennae weakly protruding. Antennae long and slender, with very fine pale pubescence and a brush of setae internally at apex of third and with some long setae at following antennal segments, except last three – four apical segments. Anennomeres 1 and 2 with metallic luster and very fine pale pubescence; antennomere 3 black, with dark-brown basal portion; antennomere 4 testaceous basally and darkened apically, with very fine pubescence; remaining segments testaceous and tomentose.

Pronotum convex, subcylindrical, wider than long, anterior border prominent, posterior bor- der double, sinuous, disc anteriorly bulging; metallic bronze-colored, shiny, with fine transverse microsculpture, stronger in anterior and posterior portions. Pronotal disc glossy, shiny. Pronotum with band of green and golden-colored scales on lateral margin and around posterior and anterior angles of pronotum, widely interrupted dorsally on anterior and posterior margins, on which with some small rudimental green spots.

Scutellum widely rounded apically, shiny and tomentose, black. Pars stridens not visible.

Elytra convex, black, with bronze metallic luster and spots of pink scales. Basal portion of each elytron around scutellum with large wide spot of green scales, emarginated with golden scales and connected with similar wide, transverse bent spot. Apical part of each elytron with three rounded spots of similar scales. Preapical spot near suture connected with transverse, wide, green band with thin line of greenish scales. Width of elytra at shoulders: 4.1–4.3 mm. Largest width of elytra behind middle: 4.6–4.8 mm. Elytra with very fine microsculpture and sparse punctures, anterior portion of elytra with sparser and coarser punctures and pubescence. Meso-, metaepimera and sternites spotted laterally, covered with green scales and emarginated with golden scales. Legs short and robust. Femora strongly widened at basal third, shiny, with metallic luster and with small elongate green spot near apex, pubescent. Tibia flattened at external border, with fringe of dark setae. Dorsal surface of tarsomeres covered by pale pubescence. Tibia and tarsi in apical part covered by row of numerous yellow setae.

Male genitalia. Male aedeagus arched, with upwarded sharp apex.

Differential diagnosis. Based on the general shape of the body, the new species is similar to D. metallica Breuning, 1938 ( Fig. 4 ), also known from Luzon, from which it can be distinguished by the following characters: 1) each elytron behind wide, transverse bent spot with three rounded and distinctly isolated green preapical spots, while that in D. metallica with in preapical part mostly covered with scales only with some small, black, smooth areas without scales; 2) pronotum emarginated with band of green and golden-colored scales on lateral margin and around posterior and anterior angles of pronotum, whale that in D. metallica covered mostly with metallic scales, except dorsal disc of the pronotum.

Etymology. Patronymic, the species is named in honor of outstanding Latvian musician and poet Guntars Račs, highlighting his contribution to the Latvian culture.

Figures

Fig. 3. Doliops racsi sp. n.: A – holotype (dorsal view), B – paratype (lateral view), C - holotype (lateral view)

Fig. 4. Doliops metallica Breuning, 1938