Polycatus negrosensis Bramanti,

Bramanti, Alessandro, Bramanti, Andrea & Rukmane-Bārbale, Anita, 2020, Three new species of the genus Polycatus Heller, 1912 (Coleoptera: Curculionidae: Polycatini) from the Philippines, Baltic Journal of Coleopterology 20 (2), pp. 161-172 : 168-172

4. Polycatus negrosensis Bramanti,

Bramanti & Rukmane, sp. nov.

( Fig. 4, 5A, 6A, 7)

Type material. Holotype, Male ( Fig. 4.1-5, 4.11 - 14): 1 male, PHILIPPINES / Negros Occidental Prov. / Don Salvador Benedicto / III.2019 / local collector leg. (white label) ; ‘’ HOLOTYPE / Polycatus negrosensis Bramanti, Bramanti & Rukmane’’ (red label) ( BRAA) .

Paratypes (8 males, 10 female): 1 male, PHILIPPINES / Negros Occidental prov. / Don Salvador Benedicto / XII. 2015 / local collector leg .; 3 males, 1 female, same as previous, but IV. 2019 (all on white rectangular labels, all in DUBC) ; 7 females, PHILIPPINES / Negros Occidental / Don Salvador Benedicto / III.2019 / local collector leg .; 1 male, same as previous, but IV. 2019; 3 males, 2 females, same as previous, but V. 2019; (All on

Bramanti A., Bramanti A., Rukmane-Bārbale A. 2020

white rectangular labels, all in BRAA). All with additional red label: ‘’ PARATYPE / Polycatus negrosensis Bramanti, Bramanti & Rukmane’’.

Distribution. Negros Island ( Fig. 7).

Description. Male. Measurements (n=5): LB: 14.2- 15.1 (holotype 14.5, mean 14.64); LR: 2.6-2.8 (holotype 2.8, mean 2.72); WR: 2.0-2.3 (holotype 2.3, mean 2.16); LP: 3.2-3.55 (holotype 3.55, mean 3.37); WP: 3.7-4 (holotype 4, mean 3.82); LE: 7.6- 10.0 (holotype 10.0, mean 8.42); WE: 5.6-6.35 (holotype 6.35, mean 5.87).

Body black, strong puncture on all parts, markings of metallic pink, round to recumbent scales. Head punctured except arear around the eyes, without longitudinal line of scales from inner margin of each eye medial portion of rostrum. Forehead with weak dorsal bulge, more than three times as wide as eye width. Rostrum LR/WR 1.22, in dorsal contour widest at base, slightly incurved along antennal scape, ventral part expanded; very slight oblong medial bulge and two stronger impressions one on each side of the bulge, elongated impression subbasally on each lateral part. Antenna evenly punctured, scape mingled with long rare hairs, antennomers with few light hairs; basal antennomer and antennomer II subequal in length, basal antennomer wider than antennomer II, 1.5 times as long as wide, antennomer II two times longer than wide; antennomers III-VI subequal in size, slightly longer than wide, antennomer VII longer than III-VI, 1.5 times as long as wide; club very narrow at base, widest along apical 1/3. Prothorax strongly punctured, LP/WP 0.89, disc with medial impression; anterior edge curved medially on disc, folded laterally and curved along lateral part; posterior edge straight, mingled with short light hairs; in dorsal contour widest at apical 1/3; prothorax with the following markings: 1) two longitudinal lines medially on disc, each slightly redirected laterally from the midline; 2) 2) longitudinal line along middle of each lateral part, from just before apex to basal 1/2; 3) transverse line from ventral part to middle of each lateral part subapically; 4) ventral part covered with metallic scales except latero-ventral part. LE/WE 1.57, elytra with deep puncture rows arranged in moderately impressed longitudinal hollows; dorsally subbasal part slightly folded; apical part without long hairs; each elytron with the following scally markings: 1) interrupted line of scales along suture to interval II; 2) patch of scales along subbasal fold; 3) longitudinal line along lateral

Bramanti A., Bramanti A., Rukmane-Bārbale A. 2020

margin; 4) interrupted longitudinal line of scales along interval V; 5) interrupted transverse line of scales just before the midline and just after the midline; 6) longitudinal line of scales from medial fortion to alex along interval VII. LE/LP 2.82, WE/ WP 1.59. Aedeagus as in Fig. 4.11 -13.

Female ( Fig. 4.6 -10, 2.15-17). Measurements (n=5): LB: 18.3-22 (mean 19.67); LR: 2.9-3.3 (mean 3.12); WR: 2.1-2.5 (mean 2.3); LP: 3.6-4.3 (mean 3.91); WP: 3.7-4.4 (mean 4.15); LE: 10.4-14.25 (mean 12.42); WE: 7.8-8.85 (mean 8.23).

Differential analyses. Polycatus negrosensis sp. nov. is similar to all species within the panayensis species group by it’s markings on pronotum at central part of the disc. Additionally to geographic isolation (Negros Island), species might be easily distinguished by deep puncture rows in weakly impressed intervals instead of nearly smooth elytra with shallow puncture rows in P. caterinae sp. nov. and deep longitudinal continuous hollows in P. barsevskisi sp. nov.. From P. panayensis Schultze, 1918 the new species can be distinguished by it’s smaller eyes and differences of scally markings on the body.

Etymology. The specific epithet is the latinized adjective derived from the area the specimens were collected from.