Eupyrgops sabatiensis, Bramanti & Bramanti & Rukmane-Bārbale, 2020

Bramanti, Alessandro, Bramanti, Andrea & Rukmane-Bārbale, Anita, 2020, Two New Species Of The Genus Eupyrgops Berg, 1898 (Coleoptera: Curculionidae: Celeuthetini) From The Luzon Island (Philippines), Acta Biologica Universitatis Daugavpiliensis 20 (2), pp. 147-153 : 151-152

Eupyrgops sabatiensis sp. nov.

( Fig. 3.1 – 3.4 , 4.1 – 3.4 , 6 , 8)

Type material. Holotype. Male: PHILIPPINES / Luzon, Aurora prov., San Luis , Ditumabao / IX. 2017 / local collector leg. (white label) // HOLOTYPE / Eupyrgops sabatiensis / Bramanti & Bramanti 2020 (red label) ( BRAA) .

Paratypes (1 male, 8 female): 1 female, PHILIPPINES / Luzon, Aurora prov., San Luis, Ditumabao / IX. 2017 / local collector leg.; 1 female , same as previous, but XI. 2018; 4 female, same as previous, but XII. 2018; 2 female, PHILIPPINES / Luzon, Quirino prov., Nagtipunan, Tapsoy / I. 2020 / local collector leg. (all on white labels, all in BRAA); 1 male : PHILIPPINES / Luzon, Quirino prov., Nagtipunan, Disimungal , Maddela / XII. 2015 / local collector leg. (white label, DUBC). All with additional red label: ‘’ PARATYPE / Eupyrgops sabatiensis Bramanti & Bramanti, 2020 ’’ .

Distribution. Northern Luzon Island: Aurora and Quirino provinces (Fig. 8).

Description. Male. Body length: 13.1; width: 6.2. Integument black, legs, head and antenna strongly shiny, prothorax and elytra with weaker luster, with markings of turquoise round to recumbent scales.

Head strongly pubescent, punctured, with longer light hairs between eyes. Forehead with longitudinal medial groove, slightly impressed dorsally, without general scales; clearly divided from the rostrum by a transverse groove. Eyes small, three times as wide as forehead, strongly prominent from the outline of the head, peak just at the middle. Rostrum with moderate dorsal bulge. Antenna rather thin, mingled with short light hairs; antennomers I-II subequal in size, twice as long as wide, slightly longer than each of antennomer III-VII; antennomers III-VII subequal in size, longer than wide; club slender, three times as long as wide.

Prothorax with very strong puncture, each dot mingled with short yellowish hair. With the following scally markings: 1) large longitudinal patch at each lateral part of prothorax; 2) two roundish dots on disc slightly after the middle, dots might be absent in some specimens; 3) large patch from each lateroventral part to underside. In dorsal contour raised from base, widest just before the middle, then gradually narrowed to apical ½ and nearly straight to apical margin. Slightly longer than wide ( LP / WP 1.05).

Elytra very strongly punctured, with rugose undefined puncture rows; with short yellowish hairs in all length. Each elytron with various number of irregularly arranged irregularly ovate scally patches that vary in size and one additional longitudinal band along lateral margin in all length. Elytra ovate, moderately convex ( WE / LE 0.71) in dorsal contour widest just at the middle, then strongly narrowed to subapical constriction. Femur mingled with short light hairs in all length; moderately widened along medial portion; with scally patch along internal delay. Male genitalia as illustrated in Fig. 6.1 – 6.3 .

Female. Much bigger than male. Prothorax in dorsal view slightly widened from constricted base to basal 1/3, then impressed along basal 1/3, then more strongly raised and rounded to middle, widest just after the middle, then narrowed to apical 1/3, impressed, then straightened to apical margin; apices of elytra very strongly expressed, WE/LE 0.77. Genitalia as illustrated in Fig. 6.4 – 6.6 . Otherwise essentially as in males.

Differential analyses. Neverless hight similarity of E. sabatiensis sp. nov. to E. waltonianus Adams, 1848 ( Fig. 5.1, 5.4 ) we decided to separate these two geographically distinct species by following morphological differences: 1) specific shape of prothorax in females of E. sabatiensis sp. nov., prothorax of E. waltonianus Adams, 1848 is less arched along medial portion and without expressed impression along basal and apical 1/3; 2) forehead of E. waltonianus Adams, 1848 wider, three times as wide as eye width instead of two times in E. sabatiensis sp. nov.; 3) apices of E. sabatiensis sp. nov. more strongly expressed, more gradually delayed in dorsal contour; 4) lateral contour of elytra in E. sabatiensis sp. nov. more rounded than in E. waltonianus .

Etymology. The new species is named in honour of good friend of first two authors Jan-Paul Sabatie.

Figures

Fig. 3. E. sabatiensis sp. nov., male. 1 – lateral view; 2 – dorsal view; 3 – abdominal area; 4 – head and rostrum in dorsal view.

Fig. 4. E. sabatiensis sp. nov., female. 1 – lateral view; 2 – dorsal view; 3 – abdominal area; 4 – head and rostrum in dorsal view.

Fig. 6. Genitalia of E. sabatiensis sp. nov. 1 – aedeagus in lateral view; 2 – male spicula; 3 – apex of aedeagus in dorsal view; 4, 6 – female spicula; 5, 7 - spermatheca.

Fig. 5. 1, 4 – Dorsal and lateral view of E. waltonianus Adams, 1848, female, paratype from Ludao Island, Taiwan (image from Insect Type Specimen Database dhmct.digital.ntu.edu.tw); 2 – dorsal habitus of E. waltonianus Adams, 1848, female, Cagayan, Luzon (DUBC); 3,5 – Dorsal and lateral view ofE. sabatiensis sp. nov., female, Ditumabao, Aurora, Luzon (BRAA).