Four new species of the genus Metapocyrtus Heller, 1912 (Coleoptera: Curculionidae: Pachyrhynchini) from Mindanao Island, Philippines Author Rukmane-Bārbale, Anita text Baltic Journal of Coleopterology 2023 23 2 283 294 http://dx.doi.org/10.3390/ijms25147806 journal article 10.59893/bjc.23(2).017 1407-8619 13203287 Metapocyrtus (Metapocyrtus) fulvus sp. nov. ( Fig. 1C , 4 C-D, 5) Four new species of the genus Metapocyrtus Heller, 1912 ( Coleoptera : Curculionidae : Pachyrhynchini ) from … Fig. 3. Habitus of M. (M.) flavomaculatus Cabras & Medina, 2021 , female; A – dorsal view; B – lateral view. Type material. Holotype , male: ‘’ PHILIPPINES / Mindanao , Bukidnon , Intavas / I. 2016 / local collector leg.’’ (white rectangular label, printed) // ‘’ HOLOTYPE / M. (M.) fulvus / Rukmane-Bārbale, 2023’’ (red rectangular label, printed). Paratypes : ( 1 female ) ‘’ PHILIPPINES / Mindanao , Bukidnon , Cabanglasan / IV. 2016 / local collector leg.’’, with additional red label : ‘’ PARATYPE / M. (M.) fulvus / Rukmane-Bārbale, 2023’’ (all in DUBC ) . Description. Holotype , Male. ( Fig. 5A ) Dimensions: LB: 8,6, LR: 1,6, WR: 1,2, LP: 2,5, WP: 2,8, LE: 5,3, WE: 3,4. N = 1 for all measurements. Coloration. Prothorax, elytra, head, femur, and tarsus reddish, brown to black; body surface shiny, without scally markings. Head. Dorsal surface moderately punctured; surface between eyes and genae with sparse white setae; forehead flattish; shallow medial longitudinal furrow from base of the eyes to before anterior margin of prothorax; transverse, shallow furrow at base of the eyes confluent with medial longitudinal furrow; eyes medium-sized, slightly convex from outline of head. 287 Rostrum. ( Fig. 1C ) longer than wide (LR/WR: 1,1,33), punctured in all length; white setae in all length; dorsum with moderate medial longitudinal furrow from middle of apical part to base, with shallow concavity; in dorsal contour nearly straight, slightly widened along basal ½; in lateral contour straight from base, decreased from apical ½ to apex. Antennae with antennal scape slightly longer than funicle, scape reaching beyond hind margin of eye; rare white setae at anterior half; funicular segment 1,5 times longer than II, segment II 1,5 times longer than III, segments III – V as long as wide, segments VI - VII wider than long. Prothorax sub globular, slightly wider than long (WP/LP: 1,12), strongly rugose, covered with white, short setae in all length and longer setae along anterior margin; widest just at the middle, in dorsal contour narrowed along anterior margin, gradually widened middle, gradually narrowed to before posterior margin, straight to posteri- or margin; with pronounced, continuous anterior and posterior groove; with shallow medial longitudinal groove at disc. Elytra sub-ovate, (LE/WE: 1,55), wider than prothorax and more than twice as long as prothorax (WE/WP: 1,21; LE/LP: 2,12); striate punctate in all length; puncture rows expressed near suture and more chaotic to lateral margin; in dorsal contour widest just at the middle, weakly convex; short white setae corresponding puncture. Femora and tibia covered with sparse white setae from middle towards anterior margin; fore-tibia with denticles along internal margin, mucronate. Male genitalia as shown in Fig. 4C, D . Fig. 4. Male genitalia of selected species, A, C, E – aedegal body in lateral view; B, D, F – sternite IX; A, B – M. (M.) tetramaculatus sp. nov. , C, D – M. (M.) fulvus sp. nov. , E, F – M. (T.) unalineatus sp. nov. 288 Four new species of the genus Metapocyrtus Heller, 1912 ( Coleoptera : Curculionidae : Pachyrhynchini ) from … Fig. 5. Habitus of M. (M.) fulvu s sp. nov. A – dorsal view, male, holotype; B – dorsal view, female; C – lateral view, male, holotype. Female. Dorsal habitus as shown in Fig. 5B , elytra wider, apex of elytral declivity with tuft of bristles. Type material. Holotype , male: ‘’ PHILIPPINES / Mindanao , Lanao , Wao / VI. 2016 / local collector leg.’’ (white rectangular label, printed) // ‘’ HOLOTYPE / M. (T.) unalineatus / Rukmane-Bārbale, 2023’’ (red rectangular label, printed). Paratypes : ( 1 male , 1 female ): both with the same location label as holotype , with additional red label : ‘’ PARATYPE / M. (T.) unalineatus / Rukmane-Bārbale, 2023’’ (all in DUBC ) . Description. Holotype , Male. ( Fig. 6A ) Dimensions: LB: 4,8, LR: 0,9, WR: 0,6, LP: 1,9, WP: 1,6, LE: 2,9, WE: 2,0. N = 1 for all measurements. 289 Coloration. Body black, strongly shiny, with markings of round, metallic pink, greenish to silver scales. Head. Dorsal surface smooth, with single colourful scales; surface between eyes and genae with rare silver setae; genae without scally markings; shallow medial longitudinal groove in all length; transverse, moderate furrow at base of eyes, not reaching lateral margins, confluent with medial longitudinal groove; eyes large, strongly convex from outline of head. Rostrum. ( Fig. 1D ) longer than wide (LR/WR: 1,5), rugose in all length; silver setae in all length; dorsum with moderate medial longitudinal furrow and corresponding shallow concavity; in dorsal contour straight; in lateral contour nearly straight. Antennae with antennal scape reaching behind margin of eye; funicular segment I nearly four times as long as wide, nearly two times longer than II, segment II more than two times longer than III, segments III – VII as long as wide, club wide, two times as long as wide. Prothorax sub globular, slightly longer than wide (LP/WP: 1,18), moderately punctured with corresponding, short, silver setae; widest just at the middle; without scally markings; with strongly pronounces, continuous anterior and posterior groove; anterior margin curved anteriorly. Elytra sub-ellipsoidal, (LE/WE: 1,45), wider than prothorax and 1,5 times as long as prothorax (WE/WP: 1,25; LE/LP: 1,52); moderately punctured in all length, with expressed puncture rows and corresponding short setae; in dorsal contour widest just before the middle, slightly convex; with the following scally markings: 1) one longitudinal line of scales along suture; 2) longitudinal line of scales along lateral margin of each elytron. 290 Tibia strongly widened from before middle to anterior 2/3; with long, rare silver setae from basal ½ to anterior edge; reddish in colour at basal part; tibia with shorter setae, without denticles along internal margin. Male genitalia as shown in Fig. 4 E-F. Female. Elytra wider, more strongly round- ed, with strongly expressed apex, with brown, thick setae along apex; otherwise as in males; dorsal habitus as in Fig. 6B . Differential analyses. The new species is unique in appearance and different from all known members of the genus, by brown - reddish colour of prothorax and general body shape new species can be referred to M. (M.) ged Cabras & Medina, 2021 , but can be easily distinguished by bare body without scally markings. Distribution. Mindanao Island, Bukidnon Province . Etymology. The specific epithet is a latinised name of specific body colouration of M. (M.) fulvus sp. nov. Fulva – reddish, brownish.