Metapocyrtus (Orthocyrtus) regalis Cabras, Medina & Bollino, 2022

Cabras, Analyn Anzano, Medina, Milton Norman, Madjos, Genelyn & Bollino, Maurizio, 2022, Three new species of the genus Metapocyrtus Heller 1912, subgenus Orthocyrtus Heller 1912 (Coleoptera, Curculionidae, Entiminae, Pachyrhynchini), from Mindanao Island, Philippines, ZooKeys 1088, pp. 115-128 : 115

Metapocyrtus (Orthocyrtus) regalis Cabras, Medina & Bollino sp. nov.

Figs 1-4

Holotype

(Figs 1 , 3 ), male: Philippines - Mindanao / Gutalac / Zamboanga del Norte / Nov. 2021/ coll. Local collector (typed on white card) // Holotype male / Metapocyrtus (Orthocyrtus) regalis / Cabras, Medina & Bollino, 2021 (typed on red card). Presently in UMCRC, will be deposited in PNM.

Paratypes

(21 ♂♂, 18 ♀♀): 3 ♂♂, 3 ♀♀: same data of the holotype, all in UMCRC; 1 ♂: Philippines - Mindanao / Gutalac / (Zamboanga del Norte) / IX-XI.2016 / coll. Bollino; 2 ♂♂, 5 ♀♀: Philippines - Mindanao / Gutalac / (Zamboanga del Norte) / VII.2018 / coll. Bollino;1 ♂: Philippines - Mindanao / near Siocon / (Zamboanga del Norte) / VII-IX.2019 / coll. Bollino; 13 ♂♂, 9 ♀♀: Philippines - Mindanao Island / Sitio Quary, Barangay Donia Cecilia / Sirawai (Siocon, Zamboanga del Norte) / ~ 7°34'N, 122°10'E - m 100 - IX.2018 / Lgt. local people - coll. Bollino, all in MBLI; 1 ♂, 1 ♀: Philippines - Mindanao Island / Sitio Quary, Barangay Donia Cecilia / Sirawai (Siocon, Zamboanga del Norte) / ~ 7°34'N, 122°10'E - m 100 - IX.2018 / Lgt. local people - coll. Bollino, will be deposited in SMTD.

Diagnosis.

Metapocyrtus (Orthocyrtus) regalis sp. nov. is different from all other species of Orthocyrtus by the following features: robust, moderately stout, strongly convex body and yellowish-orange elytral markings consisting of a thin band from stria II to lateral margin, widened laterally; two median subcircular patches from stria I-IV and from stria VI-IX, and a subtriangular patch on apical third from stria II to lateral margin.

Description.

Male. Dimensions (in mm): LB 11.8-12.5 (holotype 11.8, ā: 12.03), LR 2.2-2.1 mm (2.2, ā: 2.26), WR 1.9-2.0 (1.9 mm, ā: 1.96), LP 4.5-5.0 (4.5, ā: 4.67), WP: 4.5-5.0 (4.5, ā: 4.67), LE 7.0-7.8 (7.5, ā: 7.43), WE 5.5-6.0 (6.0 mm, ā: 5.83). N = 4.

Integument black. Body surface, rostrum, head, and underside lustrous.

Body subglabrous.

Head subglabrous; dorsal surface smooth but lateroventral surface with sparse minute and light-colored hairs; forehead between eyes slightly bulging with faint longitudinal groove almost reaching the vertex. Eyes medium-sized and feebly convex; lateral sides below the eyes with sparse, light-yellow, round to elliptical scales.

Rostrum rugose on basal half and finely punctured on apical half, longer than wide (LR/WR: 1.16), bearing minute, light-colored, adpressed hairs on dorsum and long, whitish hairs on lateral surface; transverse basal groove distinct; longitudinal groove along midline distinct with a shallow, pit-like depression; dorsum weakly convex dorsally; lateral sides with weakly widened apicad. Antennal scape slightly shorter than funicle, moderately covered with fine, light-colored hairs. Funicular segments I and II almost of the same length, twice as long as wide; segments III-VII nearly as long as wide; club subellipsoidal, nearly three times longer than wide.

Prothorax subglobular, as long as wide (LP/WP: 1.0), moderately punctate with minute hairs, widest at middle, sides evenly arcuate, strongly convex, and with the following scaly markings of yellowish-orange, round scales with a pink to purple shimmer: a) thin band at the anterior margin and b) broad lateroventral stripe before the coxa confluent with the anterior band.

Elytra subovate (LE/WE:1.25), wider and nearly twice as long as prothorax (WE/WP: 1.33, LE/LP: 1.67); body surface black, subglabrous, setiferous punctate, moderately stout; dorsum strongly and uniformly convex in profile with a gradual apical declivity; apex with sparse, light-colored, fine hairs. Each elytron with the following scaly markings of yellowish-orange, round scales with a pink to purple shimmer: a) thin band from stria II to lateral margin, slightly constricted on stria V then widened laterally, b) two subcircular median patch from stria I-IV, and from stria VI-IX, and d) subtriangular patch on apical third from stria II to lateral margin.

Legs with strongly clavate femora. Femora sparsely covered with minute, light-colored hairs and moderately covered with minute, blue-green, elliptical scales towards apical quarter. Tibiae covered with subadpressed, light-colored hairs and long, light-colored bristles along inner margin; tibiae weakly serrate along inner margin. Fore tibiae bear a mucro at apex. Tarsomeres covered with pubescence. Coxae barely pubescent with pale, bluish to yellowish, round scales on distal end. Mesoventrite covered with light-colored, adpressed hairs. Metaventrite with light-colored, adpressed hairs and yellowish, round scales at distal ends. Ventrite I weakly depressed on disc, with light-colored, adpressed hairs and yellowish to bluish, round scales towards distal ends. Ventrites II-V sparsely covered with adpressed hairs, especially towards margin. Ventrite V flattened, apical half finely densely punctured, interspersed sparsely with light-colored hairs.

Male genitalia as shown in Figs 13-15 .

Female. Dimensions (in mm): LB 12.0-14.8 ( ā: 13.4), LR 2.0-2.5 ( ā: 2.25), WR 1.7-1.9 ( ā: 1.8). LP 3.7-4.0 ( ā: 3.85). WP 4.0-4.5 ( ā: 4.25), LE 9.0-9.1 ( ā: 9.05). WE 6.0-7.0 ( ā: 6.5). N = 3.

Habitus as shown in Figs 2 , 4 .

Females differ from males in the following: a) pronotum (LP/WP 0.88-0.93), slightly shorter than in male; b) pronotum less arcuate than male, and c) elytra imperfectly subovate (LE/WE 1.27-1.3), longer and wider (WE/WP 1.64-1.67, LE/LP 2.97-3.0) than in male; d) ventrite I flattened, less hairy and not depressed on disc. Otherwise female similar to the male.

Etymology.

The specific epithet comes from the Latin adjective Metapocyrtus regalis (royal, regal), which refers to the regal appearance of this species deriving from its bright yellowish-orange coloration.

Distribution.

Metapocyrtus (Orthocyrtus) regalis sp. nov. is known from Zamboanga del Norte (Fig. 22 ).

Figures

Figure 22. Distribution of Metapocyrtus (Orthocyrtus) spp. on Mindanao Island, Philippines.

Figures 1 - 4. Metapocyrtus (Orthocyrtus) regalis sp. nov. 1 male holotype, dorsal view 2 female, dorsal view 3 ditto, male, lateral view 4 ditto, female, lateral view.

Figures 13 - 21. Male genitalia of Orthocyrtus species 13 - 21: 13 - 15 Metapocyrtus (Orthocyrtus) regalis sp. nov. 16 - 18 Metapocyrtus (Orthocyrtus) tboli sp. nov. 19 - 21 Metapocyrtus (Orthocyrtus) reagani sp. nov.; 13, 16, 19 aedeagus in lateral view 14, 17, 20 idem. in dorsal view 15, 18, 21 sternite IX in dorsal view.