Metapocyrtus lumad Cabras, Obrial & Agbas, 2024

Obrial, Graden G., Agbas, Daven Jayson D., Medina, Milton Norman D. & Cabras, Analyn A., 2024, Three New Mimetic Weevils (Coleoptera, Curculionidae, Entiminae) from Mt. Candalaga, Davao de Oro, Mindanao Island, Philippines, Zootaxa 5541 (4), pp. 438-454 : 442-444

Metapocyrtus lumad Cabras, Obrial & Agbas sp. nov.

urn:lsid:zoobank.org:act:58911044-4727-459D-8AA3-D02740F1932C

Figure 2 A–D

Holotype ( Fig. 2 A, C ), male: “ Philippines — Mindanao Island , Davao de Oro, Maragusan/ June, 2024 / leg. G. Obrial, D. Agbas (typed on white card) // HOLOTYPE male / Metapocyrtus lumad / CABRAS, OBRIAL &AGBAS, 2024 (typed on red card)” (Presently at TIRL, to be deposited at PNM) . Paratype (1 female); 1 female, same data as the holotype, Philippines — Mindanao Island, Davao de Oro, Maragusan / February 2024 / leg. G. Obrial, D. Agbas (in TIRL, to be deposited at SMTD) .

Diagnosis. The new species is uncannily similar to Metapocyrtus inangsabong but can be distinguished by the black integument, slender body, and pointed elytral apex. Additional characters distinguishing the new species include the following: deep transverse groove distinctly separating head and rostrum and dorsal contour of rostrum subapically convex, coarsely rugose head, rostrum and pronotum, elytra with deeper punctures, and elytra’s dorsal contour in lateral view uniformly convex with apical spines in females subacute.

Description. Male.

Dimension: LB: 7.8mm. LR: 1.2mm. WR: 1.1mm. LP: 2.5mm. WP: 2.2mm. LE: 5.3mm. WE: 3.1 mm. N=1

Integument black. Body and pronotal surface, rostrum, head, and underside weakly lustrous; legs matte.

Head dorsal surface coarsely punctured and rugose; forehead between eyes flat with distinct median furrow; below the eye sparsely covered with appressed, piliform and elliptical, white and pale blue scales; eyes medium-sized and weakly convex.

Rostrum separated from the head by a distinct and deep transverse groove, not fully reaching the dorsolateral margin, slightly longer than wide (LR 1.2 mm; WR 1.1 mm), coarsely rugopunctate until apical third with sparse, appressed, bluish-white piliform scales; apical third towards apex punctate with sparse, suberect setae; lateral sides with appressed, bluish, piliform scales interspersed with appressed white setae, and suberect, white piliform scales towards anterior margin; dorsal contour in lateral view almost flat then at apical third gradually declines towards apex, lateral contour in dorsal view slightly constricted at base and gradually widened anteriorly; dorsolateral margin weakly rounded. Antennal scape and funicle subequal in length. Scape covered with appressed, thin, light-colored setae, funicle with long, suberect, and white setae. Antennae with segments 1 and 2 subequal in length, three times longer than wide; segment 3 slightly shorter than segment 2 but longer than segment 4; segments 4 to 6 nearly as long as wide; segment 7 slightly longer and wider than 4 to 6; club subelliptical, nearly three times longer than wide.

Prothorax subcylindrical, punctate, covered with sparse, appressed, white setae and very minute yellowish lacrimiform scales that especially the lateral sides; slightly longer than wide (LP 2.5 mm; WP 2.2 mm), dorsal contour in lateral view nearly flat, lateral contour in dorsal view very weakly convex.

Elytra ovate, coarsely striate punctate, longer than wide (LE 5.3 mm; WE 3.1 mm), slightly wider and twice longer as prothorax (WE 3.1 mm; WP 2.2 mm; LE 5.3 mm; LP 2.5 mm), body surface sparsely covered with white subappressed piliform scales, and minute, appressed, lacrimiform to elliptical, yellowish and pale blue scales, especially on lateral surface; apex with suberect piliform scales; dorsal contour in lateral view moderately and uniformly convex; lateral contour in dorsal view uniformly convex. Legs with moderately clavate femorae. Femora covered with subappressed white and bluish piliform scales. Tibiae covered with subadpressed and suberect white setae, moderately serrate along inner edge. Protibiae and mesotibiae mucronate at apex. Tarsi moderately long and pubescent. Tarsomere 1 subtriangular, longer than tarsomere 2; tarsomere 2 short, triangular, and simple without sharp projections at apical corners; tarsomere 3 bilobed, subequal in length with tarsomere 2; tarsomere 1 and 5 slightly subequal in length; tarsal claws free. Coxae covered with setae. Mesoventrite and metaventrite covered with sparse setae. Ventrite 1 weakly convex in the middle, covered with sparse setae, and has white and pale blue round scales on distal ends. Ventrite 2–4 sparsely covered with setae. Ventrite 5 flattened, and weakly rugose with quite dense setae.

Male genitalia and sternite 9 as shown in figure 4 D–F.

Female Dimensions: LB: 9.3mm. LR: 1.5mm. WR: 1.5mm. LP: 2.5mm. WP: 2.3mm. LE: 6.8mm. WE: 4.3 mm. N=1

Habitus as shown in Figure 2 B, D .

Female ( Fig. 2 B, D ) differ from male in the following characteristics: a) pronotum rugopunctate at middle, b) pronotum and elytra less pubescent, c) elytra longer and wider in females (LE/WE 6.8mm / 4.3mm, WE/WP 4.3mm / 2.3mm, LE/LP 6.8mm / 2.5mm) compared to males, d) lateral contour of elytra in dorsal view widened and subapically interrupted, e) elytral apex with two moderately thick and blunt spines, f) lateral margin of the elytra, coxae, mesoventrite, and metaventrite covered with minute white lachrimiform scales, g) ventrite 1 slightly convex in the middle, h) Ventrite 5 deeply concave. Otherwise, female is similar to male.

Etymology. The specific ephithet “ lumad ” is a term representing a broad group of indigenous peoples in Mindanao, a designation that has been in use since 1986. This term emerged as part of an effort by Mindanao’s indigenous communities to reject the derogatory labels previously imposed on them.

Distribution. Philippines (Mindanao: Davao de Oro, Maragusan, Mt. Candalaga).

Figures

FIGURE 2. Metapocyrtus lumad A—♀ holotype, dorsal view. C­—idem, lateral view; B—♀paratype, dorsal view, D—idem, lateral view.