Borneogrammus hamiguitanus, Barševskis & Torrejos, 2023

Barševskis, Arvīds & Torrejos, Chrestine, 2023, Borneogrammus Hamiguitanus Sp. Nov. (Coleoptera: Cerambycidae) From Mindanao, Baltic Journal of Coleopterology (Basel, Switzerland) 23 (2), pp. 263-266 : 264-266

publication ID

https://doi.org/10.59893/bjc.23(2).014

persistent identifier

https://treatment.plazi.org/id/03A887CD-FFEA-8258-FFC1-F9E4FEECFEE2

treatment provided by

Felipe

scientific name

Borneogrammus hamiguitanus
status

sp. nov.

Borneogrammus hamiguitanus sp. nov.

( Fig. 1 View Fig )

264 Type specimens: Holotype: Male. / Philippines: / Mindanao Isl., / Davao Oriental, / Pujada Penins., / Mt. Hamiguitan env., / 27.05.2023, / A.Barševskis leg. / [handwritten]; // HOLOTYPUS:/ Borneogrammus / hamiguitanus sp. n. / A.Barševskis, Ch, Torrejos det. [red label, handwritten] ( DUBC) .

General distribution: Philippines: Mindanao island.

Description. Dark - brown, elongated, with parallel sides, elytra with coarse punctures and two interrupted narrow bands of yellow pubescence. Body lenght 11.3 mm. Maximal body width 2.7 mm.

transverse, very narrow, yellow, shiny, with nummerous long setae. Mandibles sharp, relatively massive, dark-brown.

Pronotum slightly elongate, cylindric, with small sharp denticle at lateraal margin. Sides of pronotum very slightly constricted before apical margin, densely and coarsely punctate. Dorsal disc of pronotum wis elongate narrow middle line and two lateral lines of yellow pubescence.

Scutellum small, slightly elongated, with dense yellow pubescence. Pars stridens slightly visible in the form of a smooth area with very fine transverse microsculpture.

Head hypognathous, quadrangular, with sparse, brown pubescence. The surface of the head is flat, even, slightly convex towards the front. Frons even, coarsely punctate. Between relatively big, slightly convex eyes weakly defined short midline, but between antennal tubercles with deep wide impression. Cheeks smooth, shiny, slightly extended, with coarse punctures and covered with fine, pubescence. The portions of the face around the cheeks are covered with relatively longer yellow-brown pubescence. Antennae relatively longer than apex of elytra, with dark first antennomere and brown remaining antennomeres, covered with very fine pubescence. Inside of antennomeres with a band of longer mixed dark and pale bristles, which extend more at the tips of the antennae, where the antennomeres resemble a brush. Labrum transverse, narrow, covered with long setae. Clypeus Elytra parallel, slightly narrowed in the middle, each elytron is rounded at the end; coarsely and irregularly punctate. Elytra with a raised suture and a raised longitudinal line covered with yellow pubescence, interrupted in some places, but at apical portion with a two additional parallel interrupted rudimentary lines of small yellow spots.

Underside of body with yellow pubescence of different density. Legs short, massive, dark-brown, with very fine, pubescence and some erect hairs. Tarsomeres dark brown.

Differential diagnosis. Comparing the external shape of the surface of the new species with second species of this genus Borneogrammus albomaculatus Vives & Heffern 2016 , new species differs in different pattern of elytra. The new species has elytra with with a raised suture and a raised longitudinal line of yellow pubescence, interrupted in some places, but at apical portion - a two additional parallel interrupted rudimentary lines of small yellow spots. Elytra of B. albomaculatus evenly covered with small white spots.

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Etymology. This species isnamed after its place of origin - Mt. Hamiguitan [Hamiguitan - hamiguitanus ].

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