Celebia leytensis, Leitāne & Rukmane-Bārbale, 2020

Leitāne, Līga Anna & Rukmane-Bārbale, Anita, 2020, A new species of the genus Celebia Thomson, 1857 (Coleoptera: Curculionidae: Eupholini) from Leyte island, Philippines, Baltic Journal of Coleopterology 20 (2), pp. 173-178 : 174-177

Celebia leytensis sp. nov.

Fig. 1 A-B, 2B, 3.

Type material. Holotype, Male: ‘’ PHILIPPINES / Leyte, Mahaplag / IV. 2017 / local collector leg.’’ (white rectangular label, printed) ; ‘’ HOLOTYPE / Male / Celebia leytensis / Leitane & Rukmane, 2020’’ (red rectangular label, printed) ( DUBC) .

Paratypes (7 males, 4 females): 1 male, ‘’ PHILIPPINES / S Leyte, Sogod / V. 2016 / local collector leg.’’; 2 males, 1 female, ‘’ PHILIPPINES / Leyte, Mahaplag / IV. 2017 / local collector leg.’’; 1 female, same as previous, but VII. 2017; 1 male, same as previous, X. 2017; 1 female, same as previous, but V. 2018; 2 males, same as previous, but VI. 2019; 1 male, ‘’ PHILIPPINES / Mahaplag, Leyte, Mt. Balocave / V. 2017 / local collector leg.’’; 1 female, same as previous, but VIII. 2017. (all on white rectangular labels). All with additional red label: ‘’ PARATYPE / Celebia leytensis / Leitane & Rukmane, 2020’’.

Distribution. Leyte Island.

Description. Male. Measurements (n=5): LB: 16.2 – 18.2 (holotype 16.3; mean 16.98); LR: 2.8 – 3.0 (holotype 2.9; mean 2.92); WR: 1.9 – 2.0 (holotype 2.0; mean 1.98); LP: 3.8 – 4.0 (holotype 3.9; mean 3.92); WP: 3.7 – 3.9 (holotype 3.8; mean 3.82); LE: 8.9 – 9.7 (holotype 9.1; mean 9.2); WE: 5.7 – 6.0 (holotype 5.7; mean 5.8). Pronotum nearly same length and width, LP/WP 1.03, elytra distinctly longer than wide, LE/WE 1.60, more than twice as long as pronotum, LE/LP 2.33, wider, WE/WP 1.5, rostrum longer than wide, LR/WR 1.45.

Dorsal habitus as shown in Fig. 1A.

Body black, glossy except underside, with markings of metallic green, yellow to gold round scales. Head subovate, densely covered with metallic scales around the eyes; forehead two times as wide as eye width; rostrum with longitudinal medial area without scales from apex to base of forehead, in dorsal view narrowing towards middle, widened to base; two impressions at basal ½, one at each dorso-lateral part; in lateral view bulging along apical ½, impressed just at middle, increased to base. Antenna densely covered with elongated scales; basal antennomer and antennomer II subequal in length, basal antennomer slightly wider at apical part, wider than antennomer II; antennomers III-V subequal in size, two times shorter and basal antennomer, 1.5 times shorter than subequal VI-VII; club strongly granulate, nearly three times as long as wide, segment I longer than segments II-III together, transition between segments very smooth.

Pronotum subcylindrical, in dorsal contour widest just before the middle, straight to base; disc with black longitudinal line in middle, deep ovate impression medially along apical 2/3 and shallow medial impression just after the midline; two impressions medially on disc, each redirected laterally from the longitudinal line; lateral parts densely covered with general scales, dorso-lateral margin with fine sub-dorsal groove.

Elytra straight in general, slightly widened along midline, narrowed at apex, strongly rugose, divided by black furrows that do not correspond intervals; furrows inside densely covered with metallic scales, at medial portion of elytra furrows interrupted by circular impressions filled with metallic scales; basal margin curved at dorso-lateral part.

Aedeagus as in Fig. 3.

Female. Dorsal habitus as shown in Fig. 1B. Measurements: LB: 18.2 – 20 (mean 19.53); LR: 2.8 – 2.9 (mean 2.85); WR: 2 – 2.4 (mean 2.28); LP: 3.8 – 4.1 (mean 3.95); WP: 4.2 – 4.8 (mean 4.4); LE: 11 – 11.9 (mean 11.38); WE: 7.7 – 8.7 (mean 8.25). N=4 for all measurements.

Differential analyses. C. leytensis sp. nov. is similar to both C. mundocostata Heller, 1929 (Samar) and C. merrilli Schultze, 1919 (Mindanao). Species might be distinguished by different shape of everted endophallus ( Fig. 2) and by various morphological features. From C. merrilli Schultze, 1919 by: 1) dorsal margin of elytra curved in C. leytensis sp. nov. but straight in C. merilli Schultze, 1919 ; 2) apical edge of hind tarsite I straight in C. leytrnsis sp. nov. while folded laterally in C. merrilli Schultze, 1919 ; 3) basal antennomer subequal in length with antennomer II, antennomers III-V subequal in length, shorter than subequal antennomers VI-VII in C. leytensis sp. nov. but in C. merilli Schultze, 1919 basal antennomer shorter than II, antennomers III-VI subequal in length, but shorter than antennomer VII. From C. mundocostata Heller, 1929: 1 ) elytra of C. leytensis sp. nov. with circular impressions only at medial part, while elytra of C. mundocostata Heller, 1929 with circular impressions in all length; 2) club of C. leytensis sp. nov. strongly elongate, three times as long as wide, while club of C. mundocostata Heller, 1929 shorter, two times as long as wide.

Etymology. Species name is Latinised word of Leyte Island, where species is originally found.