Polycatus vivesi Bramanti & Bramanti, sp., 2020

Bramanti, Alessandro, Bramanti, Andrea & Bārbale, Anita Rukmane -, 2020, Five new species of the genus Polycatus Heller, 1912 (Coleoptera: Curculionidae: Polycatini) from the Mindanao Island (Philippines), and new examples of mimicry among weevil genera, Baltic Journal of Coleopterology 20 (1), pp. 61-80 : 69-70

4. Polycatus vivesi Bramanti & Bramanti, sp.

nov. ( Fig. 5 , 10 )

Type material. Holotype, Male ( Fig. 5.6-10 ): Philippines, Mindanao Isl. / Bukidnon, Cabanglasan / X. 2015 / local collector leg. (white label) ; ‘’ HOLOTYPE / Polycatus vivesi / Bramanti & Bramanti’ ’ (red label) ( BRAA) .

Paratypes (17 males, 4 females): 2 males, PHILIPPINES / Mindanao, Mt. Kitanglad / VI. 2005 / local collector leg.; 2 males, Philippines, Mindanao / Bukidnon, Cabanglasan / X. 2016 / local collector leg.; 2 males, same as previous, but XI. 2017; 1 female, Philippines, Mindanao / Bukidnon, Intavas / VII. 2018 / local collector leg.; 1 male, Philippines, Mindanao / Bukidnon, Panamukan / VII. 2014 / local collector leg. (all on white labels, all in BRAA); 1 female, PHILIPPINES / Mindanao, Bukidnon, Cabanglasan / IX. 2015 / local collector leg.; 1 female, same as previous, but X. 2015; 4 males, PHILIPPINES / Mindanao, Mt. Kalatungan / VI. 2014 / local collector leg.; 1

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

male, 1 female, same as previous, but VII. 2014; 3 males, same as previous, but X. 2015; 1 male, PHILIPPINES / Mindanao, Compostela, Pantukan / X. 2016 / local collector leg; 1 male, PHILIPPINES / Mindanao, Intavas / IX. 2015 / local collector leg. (all on white rectangular labels, all in DUBC). All with additional red label: ‘’ PARATYPE / Polycatus vivesi / Bramanti & Bramanti’ ’.

Distribution. Mindanao Island. ( Fig. 10 ).

Description. Measurements (n=3): LB: 11.25- 12.35 (holotype 11.25; mean 11.73); LR: 2.05-2.45 (holotype 2.45; mean 2.25); WR: 1.3-2 (holotype 1.3; mean 1.75); LP: 3.3-4.15 (holotype 3.75; mean 3.73); WP: 3.1-3.6 (holotype 3.1; mean 3.27); LE: 8.4-9.6 (holotype 8.4; mean 8.87); WE: 5.55-5.9 (holotype 5.55; mean 5.72).

Body black, elytra, prothorax and head strongly shiny, with markings of metallic blue to green, round to recumbent scales on all parts except for antennae with light pearl scales. Head smooth, without hairs dorsally. Eyes small, prominent from outline of head, peak just in middle. Forehead nearly two times as wide as eye, with moderate bulge. Rostrum nearly two times as long as wide (LR/WR 1.9), with oblong, subtriangular dorsal impression from apical 1/3 to middle of forehead; in dorsal contour ventral part incurved along midline; laterally densely covered with general scales; portion under antennal scrobe bulging laterally, interrupted just before anterior edge of eye. Antenna covered with pearl scales and light brown hairs in all length. Prothorax minutely punctured, longer than wide (LP/WP 1.21), covered with sparse roundish scales, with additional scale patches: 1) transverse con tin uous lin e alon g apical mar gin; 2) subtriangular median spot along basal margin, spot interrupted in the middle by longitudinal medial groove; 3) large scally patch on each latero-ventral parts; 4) underside densely covered with general scales; in lateral contour nearly straight, weakly bulging just before the middle. Elytra short, LE/WE 1.5, intervals of rows of puncture strongly expressed, puncture followed by short, light hairs, hairs along apex longer; each elytron with various number of chaotically dispersed scale lines and small scaly patches; LE/LP 2.2; WE/WP 1.8; underside densely covered with general scales, ventrite I with central scally patch, III-IV with sparse general scales on apical half; legs covered with sparse general scales, femur with short, light hairs on basal half, tibia with longer light hairs. Aedeagus as in Fig. 5.11 -12.

Female. Measurements (n=1): LB: 12.8; LR: 2.2; WR: 1.7; LP: 3.3; WP: 3.2; LE: 8.9; WE: 6.6. Fig. 5.1-5 .

Differential analysis. Based on size of the eyes and scutellum, marking colour and restricted distribution, Polycatus vivesi sp. nov. is similar to P. eupholoides , P. mimicus sp. nov. and P. opulentus . It can be distinguished from all these species by: 1) from P. eupholoides and P. mimicus sp. nov. by bulge on rostrum, that starts before the basal edge of the eye in P. vivesi sp. nov. and from the basal edge in P. eupoloides and P. mimicus sp. nov. as well as more strongly rugose elytra in P. vivesi sp. nov., combined with unique scally markings; 2) from P. opulentus by it’s unique markings on elytra that consist of chaotically dispersed scaly lines instead of dotted elytra of P. opulentus .

Etymology. The new species is dedicated to Eduard Vives, for appreciation of help and useful comments during the research.

Figures

Fig. 5. P. vivesi sp. nov. (BRAA). 1-5 male; 6-10 female; 11- aedegal body in lateral view; 12 – aedegal body in dorsal view; 13 – sternite IX; 14 – aedegal body in ventral view; 15 – spermatheca; 16 – ovipositor; 17 – ventrite VIII

Fig. 10. Distribution map of studied Polycatus species

Fig. 6. TYPE of P. eupholoides (MTD). 1-5 male; 6 – aedegal body in ventral view; 7 – aedegal body in lateral view; 8 – aedegal body in dorsal view; 9 – sternite IX; 10 – drawing of P. eupholoides from it’s original description

Fig. 7. P. mimicus sp. nov. (DUBC). 1-5 male; 6-10 female; 11 – aedegal body in lateral view; 12 – aedegal body in dorsal view; 13 – sternite IX; 14 – aedegal body in ventral view; 15 – spermatheca; 16 – sternite VIII

Fig. 8: P. bramantii sp. nov. (DUBC). 1-5 male; 6-8 aedegal body; 9 - tegmen; 10 – sternite IX

Fig. 9. P. waoensis sp. nov. (BRAA). 1-5 male; 6-10 female; 11-13 aedegal body; 11 – sternite IX; 15 – sternite VIII; 16-17 spermatheca