Erythrus philipinus Vives, 2021

Barševskis, Arvîds & Torrejos, Chrestine, 2021, To the knowledge of Erythrus philipinus Vives, 2021, Xystrocera danilevskii Vives, 2013 and Xystrocera festiva Thomson, 1860 (Coleoptera: Cerambycidae) with new distribution data in the Philippines, Baltic Journal of Coleopterology 21 (1), pp. 65-72 : 66-68

Erythrus philipinus Vives, 2021

( Fig. 1)

References: Vives, 2021: 117

Type deposited: EVC

Type locality: Philippines, Mindanao island

Material examined: Palawan isl., Roxas , 12.2020. (1 female, local collector leg.). This is the first published information on the discovery of this species after its description and the first record for Palawan Island.

Vives (2021) recently described this species after one male from Mindanao isl., Philippines, collected on 05.2018. Our collection also includes one specimen of this species, a female found on Palawan Island at 12.2020. Below is a brief description of the female of this species .

Description. Female. Body in general black, elongate, narrow. Dorsal surface of elytra and pronotum red. Length: 16.0 mm, maximal width: 4.3mm. Head elongated, flattened, with convex, bilobate eyes. Dorsal surface of head with coarse punctures, irregular wrinkles and sparse tomentum. Medioapical portion between antennal bases elevated, with wide and long keel, and with narrow, long impression. Labrum dark-brown, slightly pubescent, shiny. Clypeus brown, transverse, shiny. Mandibles dark-brown, with sharp apex, massive, elongated, shiny,with dense and coarse punctures, wrinkles and lateral pubescence. Cheeks separated from forehead with a sharp, shiny keel, with sparse pubescence. Antennae black, relatively short, ends at the apical third of elytra, with slightly enlarged antennomeres, which apically with an elongated tooth at the outside (except apical antennomere). Pronotum cylindrical, widened in middle. Apical and basal portions neck-shaped narrowed. Middle portion of pronotum with two dark rounded spots, very fine pubescence and fine punctures. Scutellum small, with dark pubescence. Pars stridens forming smooth spot, with very fine transverse microsculpture. Elytra almost parallel-sided, from middle slightly narrowed apically, subcylindrical, with indistinct, slightly raised shoulders hump. Elytra matte, with densand relatively fine punctation and fine sparse pubescence. Dorsal part of each elytron with two smoothed longitudinal ribs. Surface of elytra behind scutellum darkened, with dark ban along suture. Apical margins of each elytron slightly concave, with small, short sharp extension near suture. Elytra at apical third slightly widened. Ventrolateral surface of body with coarse microsculpture and dense pubescence. Legs black, tarsomeres dark-brown, covered with dark pubescence.

The female differ from the male by shorter antennae - in females they end at the apical third of elytra, but in males near the apex of elytra. In females, the apical third of elytra is more enlarged than in males. Both the male Vives (2021) holotype and the female in our collection are 16 mm long, while the largest width of the holotype described in the Vives article is 3.8 mm, and the female described in the article is 4.3 mm wide.

Xystrocerini Blanchard, 1845