Metapocyrtus (Metapocyrtus) pseudahirakui Cabras & Medina, 2021

Cabras, Analyn Anzano & Medina, Milton Norman, 2021, Four new species of Metapocyrtus Heller, 1912 (Coleoptera, Curculionidae, Entiminae, Pachyrhynchini) from Mindanao Island, Philippines, Biodiversity Data Journal 9, pp. 72453-72453 : 72453

Metapocyrtus (Metapocyrtus) pseudahirakui Cabras & Medina, 2021 sp. n.

Materials

Type status: Holotype. Occurrence: recordedBy: Local collector; individualCount: 1; sex: female; lifeStage: adult; preparations: card-mounted; disposition: in collection; Taxon: scientificName: Metapocyrtus pseudahirakui; kingdom: Animalia ; phylum: Arthropoda ; class: Insecta ; order: Coleoptera ; family: Curculionidae ; genus: Metapocyrtus ; specificEpithet: pseudahirakui; taxonRank: species; scientificNameAuthorship: Cabras & Medina, 2021; nomenclaturalCode: ICZN; Location : continent: Asia ; islandGroup: Mindanao ; country: Philippines; countryCode: PHL; stateProvince: Bukidnon; municipality: Lantapan ; Identification : identifiedBy: AA Cabras; Event : samplingProtocol: Beating sheet; year: 2018; month: July ; habitat: old growth primary forest; Record Level : institutionID: UM; collectionID: UM-CRC

Description

Female. Dimensions (in mm): LB 10.2, LR 1.0, WR 1.0, LP 3.2, WP 3.2, LE 7.0, WE 4.8, N = 1.

Habitus as shown in Fig. 7 .

Integument black. Body surface, rostrum, head and underside with weak lustre.

Body subglabrous. Head subglabrous, sparsely, minutely pubescent; forehead between eyes flattish, covered with metallic, golden-yellow and round scales; median groove barely distinct; lateral parts behind eyes with golden-yellow and pale green round scales interspersed with hair-like scales of similar colours. Ros-trum sparsely, minutely pubescent, slightly longer than wide (LR/WR 1.33), dorsum and lateral surface bearing minute, recumbent, yellowish hairlike-scales and anterolateral mar-gin with longer, light-brown hairs; transverse basal groove distinct; basal half with pronounced V-shaped ridge beset with metallic golden-yellow, round scales. Eyes medium-sized and feebly convex. Antenna moderately covered with fine, light-coloured hairs. Funicular antennomeres I and II almost of the same length, nearly three times longer than wide. Prothorax subglobular, as long as wide (LP/WP 1.0), mostly punctured, coarsely rugose and punctured especially along middle of dorsum, weakly convex, with distinct mid-line groove. Pronotum with the following scaly markings of metallic golden-yellow and pale green, round scales: a) thin transverse band approximately one seventh of the length of pronotum at anterior margin, b) transverse band across entire width at mid-length slightly thicker than anterior band, nearly confluent with anterior band at middle of dorsum and c) lateroventral stripe before coxa, confluent with anterior and median bands. Elytra short ovate (LE/WE 1.46), wider and longer than prothorax (WE/WP 1.5, LE/LP 2.19), black, subglabrous, strongly convex; coarsely punctured with very minute and sparse light-coloured, short seta; slightly flattish on basal half of dorsum and with steep apical declivity. Elytra with eight longitudinal scaly stripes of metallic golden-yellow and pale green, round scales beginning shortly from anterior margin and extending towards apex and one longitudinal parasutural stripe from before mid-length towards apical declivity. Longitudinal stripe at striae II extending from anterior margin to apical declivity; stripe at striae II extending from anterior margin to apex of elytra, confluent with stripe at lateral margin; stripe at striae III-VII confluent at apical quarter. Base of apical declivity with brownish tuft of hairs on each elytron. Legs with strongly clavate femora. Femora covered with recumbent light-bluish hair-like scales. Tibiae covered with suberect, light-coloured bristles along inner margin and light coloured recumbent hairs on outer margin; weakly serrate along inner edge. Fore and mid-tibiae bearing mucro at apex. Tarsomeres covered with pubescence dorsally. Coxae with recumbent light-coloured hair-like scales. Mesoventrite covered with metallic and greenish, adpressed hair-like scales. Metaventrite slightly depressed on disc with subrecumbent hair-like scales and light-yellow ochre and pale green round scales at lateral sides. Ventrite I depressed on disc with light-coloured, adpressed hairs. Ventrites II-V with sparse, light-coloured, short hairs. Ventrite V flattened, finely densely punctured with short hairs.

Males unknown.

Diagnosis

Metapocyrtus (M.) pseudahirakui sp. nov. differs from all other species of the subgenus for its unique elytral ornamentation consisting of golden-yellow and pale green longitudinal stripes along the elytral striae. It superficially looks similar to M. (Orthocyrtus) hirakui Cabras, Medina & Bollino, 2021 due to mimicry reasons, but can be distinguished by its rostrum, punctures of the pronotum and the tuft of brownish hairs at the base of the apical declivity. M. (M.) pseudahirakui sp. nov. has rostrum with V-shape ridge and rounded dorsolateral edges, whereas M. (O.) hirakui has a rostrum which is dorsally straight, mostly in a plane with front and, at base, the sides are rectangularly declined.

Etymology

Etymology. The specific epithet pertains to its uncanny resemblance to M. (O.) hirakui .

Distribution

Metapocyrtus (M.) pseudahirakui sp. nov. is known, so far, in Bukidnon.

Figures

Figure 7. Metapocyrtus (Metapocyrtus) pseudahirakui sp. nov., female holotype: A dorsal view; B lateral view.