Calidiopsis bilineatus, Rukmane-Bārbale, 2020

Rukmane-Bārbale, Anita, 2020, To The Knowlegde Of The Genus Calidiopsis Heller, 1913 (Coleoptera: Curculionidae: Celeuthetini), With Description Of Two New Species From Mindanao Island (Philippines), Acta Biologica Universitatis Daugavpiliensis 20 (2), pp. 141-146 : 142-145

Calidiopsis bilineatus sp. nov.

( Fig. 3.1 – 3.5 ; 5.1 – 3 )

Type material. Holotype. Male : PHILIPPINES / Mindanao , Sarrangani / Kiamba / III. 2016 / local collector leg. (white rectangular card) // HOLOTYPE / Calidiopsis bilineatus Rukmane-Barbale, 2020 / det. Rukmane-Barbale 2020 (red rectangular label)

Paratypes (14 males, 18 females): PHILIPPINES / Mindanao, Sarrangani / Kiamba / X. 2015 / local collector leg. (1) // PHILIPPINES / Mindanao, Sarrangani / Kiamba / I. 2016 / local collector leg. (5) // PHILIPPINES / Mindanao, Sarrangani / Kiamba / III. 2016 / local collector leg. (8) // PHILIPPINES / Mindanao, Sarrangani / Kiamba / VII. 2016 / local collector leg. (1) // PHILIPPINES / Mindanao, Sarrangani, Malungon / IX. 2015 / local collector leg. (1) // PHILIPPINES / Mindanao, Sarrangani, Malungon / XI. 2015 / local collector leg. (5) // PHILIPPINES / Mindanao, Bukidnon, Cabanglasan / X. 2015 / local collector leg. (4) // PHILIPPINES / Mindanao, Davao, Kapatagan / III. 2016 / local collector leg. (1) // PHILIPPINES / Mindanao, Agusan, Sibagat / VI. 2015 / local collector leg. (1) // PHILIPPINES / Mindanao, Cotabato, T’Boli / X. 2015 / local collector leg. (3) // PHILIPPINES / Mindanao, Cotabato, T’Boli / XI. 2015 / local collector leg. (2). All with additional red label : PARATYPE / Calidiopsis mindanaoensis / Rukmane-barbale, 2020 / det. Rukmane-Barbale 2020.

Distribution. Central Mindanao Island.

Description. Male. Dorsal habitus as shown in Fig. 3 . Length 6.9 – 7.6 (holotype 7.2; mean 7.4); width 2.6 – 3.1 (holotype 2.8; mean 2.9) (n=5). Body black, with markings of glossy green round to recumbent scales with golden tingle.

Head punctured, pubescent; forehead flat, with thick brownish hairs between eyes; eyes small, three times as wide as forehead, prominent from the outline of the head, peak just in the middle. Rostrum divided from forehead by fine transverse groove; dorsally with general scales and thick brownish hairs, longitudinal medial groove from apex to basal ½; strongly raised dorsally, medial portion impressed from both sides. Antennal scrobe with long dark hairs, extended to apex, proximately same length as rest of the antennomers.

Prothorax longer than wide (LP/WP 1.11), strongly punctured, rugose, strongly pubescent; with the following markings: 1) two longitudinal lines on dorsum in all leangth, each slightly redirected laterally from the midline; 2) longitudinal band on each lateroventral part of the prothorax; in dorsal contour nearly straight, slightly widened from the base, widest just before the middle, then decreased to apical ½, impressed, then widened to apical margin. Elytra sub-ovate, rugose, with clearly expressed intervals of deep puncture rows, nearly furrows; short brownish hairs that correspond each dot; each elytron with four longitudinal lines in all length and additional line on suture; in dorsal contour widest just at the middle, gradually decreased to apical 1/3, then more strongly decreased to extended apex. Tarsi, tibia and femur marked with single scales, mingled with shorter to longer light to golden hairs.

Male genitalia as illustrated in Fig. 5.1 – 5.3 .

Female. Slightly bigger, elytra wider, apex of elytra more strongly expressed. Antennal scrobe thicker. Otherwise essentially as in males.

Notes on variability. After examination of series of current species, I concluded, that species is very variable in terms of markings on elytra ( Fig. 3 ). There are at least three variants of scally markings: 1) four longitudinal lines on each elytron and one additional line along suture; 2) four longitudinal lines on each elytron without line on suture and additional transverse medial line, that slightly interrupts longitudinal lines medially; 3) four interrupted longitudinal lines, each line from base to basal ½ and from apical ½ to apex, additional interrupted transverse medial line.

Differential analyses. Thus previously genus Calidiopsis was distributed only on Western part of Mindanao and Basilan Island, study revealed, that distribution range of current genus is wider. New species is found on central part of Mindanao, and can be easily distinguished from rest of the species by unique markings on prothorax.

Etymology. The new species is named according to its markings on prothorax: two longitudinal scale lines. Name is Latinised adjective of two lines – bilineata .

Figures

Fig. 3. Different variations of Calidiopsis bilineatus sp. nov.; 1 – male, holotype; 2, 3, 5 – females; 4 – male.

Fig. 5. 1 – 3 Male genitalia of Calidiopsis bilineatus sp. nov.; 4 – 6 Male genitalia of Calidiopsis waoensis sp. nov.; 1, 4 – aedeagus in lateral view; 2, 5 – sternite XI; 3, 6 – tegmen.