Pachyrhynchus disargus Rukmane, 2019, sp. nov.
Creators: name: Rukmane, Anita
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Pachyrhynchus
Pachyrhynchus disargus

description: Pachyrhynchus disargus sp. nov.   
Fig. 2, 4 A-B.  
 Type material. Holotype. Male. ‘’ PHILIPPINES / Luzon, Nueva Vizcaya, Kasibu / V. 2015 / local collector leg.’’ (white rectangular label, printed); ‘’ HOLOTYPE / Pachyrhynchus disargus / Rukmane, 2019 / det. Rukmane A. 2019’’ (red rectangular label, printed).   
Integument black, body shiny, underside with weaker luster; body with markings of pale orange and blue round to recumbent scales. Dorsal and lateral habitus as shown in Fig. 2 A-B.  
Rostrum longer than wide (LR/ WR 1.13), slight impression on apical ½, bulging on apical 2/2; triangular impression on basal part, shallow longitudinal groove from middle of rostrum to base of forehead; lateral parts covered with rare short white hairs, patch of scales on genae. Head glabrous, finely punctured; eyes small, slightly prominent from the outline of the head. Forehead slightly bulging, smooth, nearly 1,8 times as wide as eye width.  
Prothorax subspherical, longer than wide (LP / WP 1.15), widest just before the middle; weakly punctured; with the following markings: 1) two subtriangular patches of pale orange scales on dorso-lateral part near apical margin; subovate patch on each lateroventral part; in dorsal contour increased from apical margin, widest just before the middle, firmly rounded, then decreased to basal 1/3 where slightly incurved and increased to basal margin; subbasal groove strongly pronounced, subapical groove interrupted on disc.  
Legs stout; coxa without scaly markings; femur without hairs, patch of scales on apical part; tibiae incurved apically, covered with sparse pubescence on all length and long light hairs along internal margin; tarsus with long, golden setae. Elytra sub ovate (LE / WE 1.69), with weakly pronounced intervals, nearly smooth; each elytron with the following markings: 1) two subovate pale orange patches on basal part; 2) four pale blue subovate patches on medial; 3)two sutural patches, one just before midline, one close to apex; 4) three subovate patches on apical ½; 4) one triangular patch near apex laterally; widest just at the middle; on dorsal dimension narrow at the base, gradually increased to middle, widest just in the middle, then roundish and gradually decreased to apex; apex rounded, with weak pubescence.  
Elytra wider than prothorax (WE / WP 1.56), more than twice as long as prothorax (LE / LP 2.29). Ventrites densely covered with blue to green round scales, minutely pubescent, mingled with few longer light color hairs. Genitalia as shown in Fig. 4 A-B.  
 Female. Unknown.   
 Differential analyses. P.disargus sp. nov. is similar on general appearance to P. argus Pascoe by its shape of pronotum and elytra, yet, it is easily distinguishable by the following features: 1) narrower pronotum, that is widest just before middle, increased at subbasal part; 2) unique markings on pronotum and elytra of P.disargus sp. nov..   
 Etymology. This species was named after it’s similarity to P. argus.
description: Published as part of Rukmane, Anita, 2019, Four new species and two subspecies of the genus Pachyrhynchus Germar, 1824 (Coleoptera: Curculionidae: Pachyrhynchini) from Luzon Island, Philippines, pp. 141-150 in Baltic Journal of Coleopterology 19 (2) on pages 146-147, DOI: 10.5281/zenodo.12521148