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

Figs 5-8

Holotype

(Figs 5 , 7 ), male: Philippines - Mindanao / Kapatagan / Davao del Sur / Nov. 2020 / coll. Local collector (typed on white card) // HOLOTYPE male / Metapocyrtus (Orthocyrtus) tboli / CABRAS, MEDINA & BOLLINO, 2021 (typed on red card). Presently in UMCRC, will be deposited in PNM.

Paratypes

(55♂, 32♀♀): 1♂, 2♀♀: same data of the Holotype, all in UMCRC; 48 ♂♂, 29 ♀♀: Philippines - Mindanao / Davao - Mt. Apo / VIII.2009 - m 1000-1200 / lg. local people - coll. M. Bollino; 1 ♂: Philippines - Mindanao / Sarangani / Kiamba / IX.2015 / coll. Bollino; 2 ♂♂: Philippines - Mindanao / Kiamba / (Sarangani) / January-March 2071 / coll. Bollino; 1 ♂: Philippines - Mindanao / Mt. Kapatagan / Davao del Sur Prov. / IX-X.2012 / coll. Bollino; 1 ♂: Philippines - Mindanao / Mt. Apo - Calatagan / (Davao del Sur-Brgy. Digos) / VI-VII.2017 - m 1400-1500 / coll. Bollino, all in MBLI; 1 ♂, 1 ♀: Philippines - Mindanao / Davao - Mt. Apo / VIII.2009 - m 1000-1200 / lg. local people - coll. M. Bollino, will be deposited in SMTD.

Diagnosis.

Metapocyrtus (Orthocyrtus) tboli sp. nov. differs from all other species of Orthocyrtus by having its elytral scaly marking consisting of a thin, subbasal, median transverse stripe from stria I towards the lateral margin, a longitudinal stripe on apical third along stria II, a long postmedian stripe along the lateral margin towards apex, which is confluent with the stripe along stria II, and two small dots on intervals V and VI on the apical quarter, at times confluent with the distorted longitudinal stripe on stria II and forming a subtriangular shape.

Description.

Male. Dimensions (in mm): LB 11.0-11.1 (holotype 11.0, ā: 11.05), LR 2.2-2.5 m (2.2, ā: 2.35), WR 1.8-2.0 (1.8 mm, ā: 1.9), LP 3.7-3.9 (3.7, ā: 3.8), WP: 4.0-4.1 (4.0, ā: 4.05), LE 7.0-7.1 (7.0, ā: 7.05), WE 5.5-5.8 (5.5 mm, ā: 5.65). N = 2.

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

Body subglabrous.

Head subglabrous with sparse and minute pubescence on lateroventral side; underside of eyes with elongated stripe of metallic, light blue, elliptical scales interspersed with subadpressed setae; frons in between eyes nearly flattish with sparse, light-blue, round scales. Eyes medium-sized and moderately convex.

Rostrum finely punctured, longer than wide (LR/WR: 1.22), bearing sparse, minute, light-colored, adpressed hairs on dorsum; lateral surface covered with long, whitish hairs; anterolateral sides with long, yellowish hairs; transverse basal groove distinct; longitudinal groove along midline visible with shallow depression beset with light-blue, minute, round scales; dorsum weakly convex dorsally; lateral sides with moderately widened apicad. Antennal scape as long as the funicle, moderately covered with fine, light-colored hairs, especially toward the distal ends. 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, slightly wider than long (LP/WP: 0.925), with fine, setiferous punctures, widest before middle with highest point just after apical margin, weakly convex, and with the following scaly markings of minute, light-blue, round scales: a) fine transverse stripe along the anterior margin, b) thin lateroventral band before the coxa confluent with the anterior band, c) two small subcircular spots on middle of discs, and d) thin stripe along the lateral side of posterior margin.

Elytra subovate (LE/WE:1.27), significantly longer and moderately wider than prothorax (WE/WP: 1.38, LE/LP: 1.89); body surface black, subglabrous, setiferous punctate, strongly convex dorsally; apex with sparse, light-colored, fine hairs. Each elytron with the following scaly markings of minute, light-blue, round scales: a) a thin, subbasal, transverse stripe from stria I towards lateral margin, b) a thin, median, transverse stripe starting from interval I towards but not reaching lateral margin, c) a longitudinal stripe on apical third along stria II, d) a long postmedian stripe along lateral margin extending towards apex, confluent with the longitudinal stripe on stria II, and d) two small dots on interval V and VI on apical quarter, at times confluent with the distorted longitudinal stripe on stria II, forming a subtriangular shape.

Legs with strongly clavate femora. Femora sparsely covered with minute, light-colored setae, denser towards the apex. Tibiae covered with subadpressed, brownish hairs and long, light-colored bristles along inner margins; tibiae weakly serrate along inner margin. Fore tibiae bear a mucro at apex. Tarsomeres covered with pubescence. Coxae barely pubescent with light-coloured, elliptical scales and light-colored hairs on distal end. Mesoventrite covered with light-colored, adpressed hairs. Metaventrite depressed with light-colored, adpressed hairs and light-blue, round scales at sides. Ventrite I moderately depressed on disc, with light-colored, adpressed hairs and light-blue, 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-coloured hairs.

Male genitalia as shown in Figs 16-18 .

Female. Dimensions (in mm): LB 10.5-11.5 ( ā: 11), LR 2.0-2.1 ( ā: 2.05), WR 1.6-1.8 ( ā: 1.7). LP 3.0-3.5 ( ā: 3.25). WP 3.8-4.0 ( ā: 3.9), LE 7.5-8.1 ( ā: 7.8). WE 5.8-6.5 ( ā: 6.15). N = 2.

Habitus as shown in Figs 6 , 8 .

Females differ from males in the following: a) pronotum (LP/WP 0.79-0.88), slightly shorter than in male; b) pronotum less arcuate than male, and c) elytra imperfectly subovate (LE/WE 1.25-1.29), longer and wider (WE/WP 1.52-1.63, LE/LP 2.31-2.5) than in male, widest before middle; d) ventrite 1 flattened, less hairy, and not depressed on disc. Otherwise female similar to the male.

Etymology.

The new species is named after the indigenous community inhabiting Kiamba Saranggani, the Tboli people. It is a noun in apposition.

Distribution.

Metapocyrtus (Orthocyrtus) tboli sp. nov. is known from Saranggani and Davao provinces (Fig. 22 ).

Figures

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

Figures 5 - 8. Metapocyrtus (Orthocyrtus) tboli sp. nov. 5 male holotype, dorsal view 6 female, dorsal view 7 ditto, male, lateral view 8 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.