Metapocyrtus (Metapocyrtus) flavomaculata, 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) flavomaculata sp. n.

Materials

Type status: Holotype. Occurrence: recordedBy: Local collector; individualCount: 1; sex: male; lifeStage: adult; preparations: card-mounted; disposition: in collection; Taxon: scientificName: Metapocyrtus flavomaculata; kingdom: Animalia ; phylum: Arthropoda ; class: Insecta ; order: Coleoptera ; family: Curculionidae ; genus: Metapocyrtus ; specificEpithet: flavomaculata; taxonRank: species; scientificNameAuthorship: Cabras & Medina, 2021; nomenclaturalCode: ICZN; Location : continent: Asia ; islandGroup: Mindanao ; country: Philippines; countryCode: PHL; stateProvince: Davao del Sur; municipality: Davao City ; locality: Lamanan ; Identification : identifiedBy: AA Cabras; Event : samplingProtocol: handpicking; year: 2018; month: July ; habitat: old growth secondary forest; Record Level : institutionID: UM; collectionID: UM-CRC Type status: Paratype. Occurrence: recordedBy: Local collector; individualCount: 5; sex: female; lifeStage: adult; preparations: card-mounted; disposition: in collection; Taxon: scientificName: Metapocyrtus flavomaculata; kingdom: Animalia ; phylum: Arthropoda ; class: Insecta ; order: Coleoptera ; family: Curculionidae ; genus: Metapocyrtus ; specificEpithet: flavomaculata; taxonRank: species; scientificNameAuthorship: Cabras & Medina, 2021; nomenclaturalCode: ICZN; Location : continent: Asia ; islandGroup: Mindanao ; country: Philippines; countryCode: PHL; stateProvince: Davao del Sur; municipality: Davao City ; locality: Lamanan ; Identification : identifiedBy: AA Cabras; Event : samplingProtocol: handpicking; year: 2018; month: July ; habitat: old growth secondary forest; Record Level : institutionID: UM; collectionID: UM-CRC

Description

Male. Dimensions (in mm): N = 2. LB 6.8-7.1 (holotype 10.9, â: 10.75), LR 1.0-1.1 (1.0, â: 1.05), WR 1.0-1.1 (1.0, â: 1.05), LP 2.0-2.1 (2.0, â: 2.05), WP 2.0-2.1 (2.0, â: 2.05), LE 4.8-5.0 (4.8, â: 4.9), WE 3.0-3.2 (3.0, â: 3.1).

Habitus as shown in Fig. 5 B and D.

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

Body subglabrous. Head subglabrous, sparsely, very minutely pubescent; forehead between eyes slightly depressed and covered with metallic, light-yellow ochre, round scales; lateral parts with light-yellow ochre, round scales behind eye interspersed with metallic yellow-green, hairlike, elliptical scales; median groove distinct. Ros-trum sparsely, minutely pubescent, slightly longer than wide (LR/WR 1.33), dorsum bearing minute, light-coloured recumbent hairs; lateral surface with metallic, yellow-green hair-like scales and long, light-coloured hairs towards anterolateral mar-gin; transverse basal groove distinct; dorsal surface weakly convex with faint V-shaped ridge. Eyes medium-sized and moderately convex. Antenna moderately clavate, scape slightly shorter than funicle, moderately covered with fine, light-coloured hairs. Funicular antennomeres I and II almost of the same length, nearly three times longer than wide; antennomeres III-VII slightly longer than wide; club subovoid, nearly three times longer than wide. Prothorax subglobular, as long as wide (LP/WP 1.0), faintly punctured with sparse minute hairs, widest at mid-length, weakly convex and with the following scaly markings of metallic light yellow ochre and pale green, round scales: a) two medium-sized spots on basal parts, b) two medium-sized spots along apical margin and c) lateroventral stripe before the coxa. Elytra strongly ovate (LE/WE 1.6), wider and longer than prothorax (WE/WP 1.5, LE/LP 2.4), black, subglabrous, moderately convex, coarsely punctured. Each elytron with the following markings of metallic light-yellow ochre and pale green round scales: a) two sub-basal spots, b) three spots slightly before mid-length, c) three spots along apical third and d) one short apical stripe. Suture along apical declivity with light-coloured piliform scales becoming denser towards apex. 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 tibiae bearing mucro at apex. Tarsomeres covered with pubescence dorsally. Coxae with light-coloured suberect hair-like scales. Mesoventrite covered with suberect light-coloured hairs. Metaventrite and ventrite I slightly depressed with light-coloured, adpressed bristles and light-yellow ochre, round scales at lateral sides. Ventrites II-V with light-coloured, adpressed bristles. Ventrite V flattened, smooth with dense, recumbent yellow-ochre hairlike-scales.

Male genitalia as shown in Fig. 6 A-C. Aedeagal body short and slender and apicad sharply produced with acute apex; aedeagal apodemes 2.5 longer than aedeagal body.

Female. Dimensions (in mm): N = 6. LB 7.6-8.5 ( â: 8.2), LR 1.0-1.2 ( â: 1.13), WR 0.8-1.0 ( â: 0.93), LP 2.1-2.5 ( â: 2.37), WP 2.4-2.8 ( â: 2.67), LE 5.5-6.0 ( â: 5.83), WE 4.0-4.2 ( â: 4.13).

Females differ from males by the following characters: a) pronotum slightly shorter than wide in males (LP/WP 0.88-0.89), b) pronotum subtruncate, c) elytra longer and wider (LE/WE 1.38-1.43, WE/WP 1.5-1.67, LE/LP 2.4-2.62) than in males and with oblique faint ridge on dorsolateral surface before mid-length, d) presence of tuft of piliform scales on elytral declivity and e) elytral apex with triangular projection. Otherwise mentioned, females similar to males.

Diagnosis

Metapocyrtus (Metapocyrtus) flavomaculata sp. nov. differs from all other species of the subgenus for its unique elytral ornamentation consisting of yellow ochre spots. It bears some superficial resemblance to Metapocyrtus (Metapocyrtus) worcesteri Schultze, 1925 from Zamboanga Province, but can be easily distinguished by the shape of the rostrum and pronotum, the presence of four spots in the pronotum (two at basal parts and two along apical margin), compared to the two spots at mid-length of M. (M.) worcesteri. The presence of an oblique ridge on the dorsolateral surface before mid-length in the elytra of females of Metapocyrtus (Metapocyrtus) flavomaculata sp. nov. also distinguishes it.

Etymology

Etymology. Latin, flavus = yellow; maculata = spotted. The Latin name refers to the yellow spots on the elytra.

Distribution

The new species is known, so far, in Davao City and Bukidnon.

Figures

Figure 5. Metapocyrtus flavomaculata sp. nov.: A male holotype, dorsal view; B female, dorsal view; C male, lateral view; D female, lateral view.

Figure 6. Metapocyrtus flavomaculata A aedeagus in lateral view; B idem in dorsal view; C sternite IX in dorsal view.