Apocyrtus auroraensis, Rukmane-Bārbale, 2021

Rukmane-Bārbale, Anita, 2021, To the knowledge of the genus Apocyrtus Erichson, 1834 (Coleoptera: Curculionidae: Pachyrhynchini) with description of new species from Luzon Island, Philippines, Baltic Journal of Coleopterology 21 (2), pp. 181-188 : 183-188

Apocyrtus auroraensis sp. nov.

( Fig. 4; Fig. 5C)

Type material. Holotype, Male: ‘’ PHILIPPINES / Luzon, Aurora, Labuyo / VII. 2013 / local collector leg.’’ (typed on a white rectangular label) ; ‘’ HOLOTYPE / Male / Apocyrtus auroraensis Rukmane-Bârbale, 2021 / det. Rukmane-Bârbale, 2021’’(typed on a red rectangular label).

Distribution. Philippines, Luzon Island, Aurora province.

Description. Male. Measurements: LB: 10.0; LR: 1.4; WR: 1.0; LP: 2.7; WP: 2.9; LE: 5.9; WE: 5.4. N=1 for all measurements. Dorsal habitus as shown in Fig. 4.

Body, except abdomen black, shiny. Elytra and underside reddish. Markings of shiny, metallic green, round to recumbent scales on elytra, underside, prothorax and head.

Head minutely punctured, without hairs dorsally, with single scaly markings dorsally, laterally with patch of golden scales under each eye. Eyes small, slightly prominent from the outline of the head, peak just in the middle. Forehead slightly bulging dorsally, 1.5 times as wide as eye. Rostrum equally punctured, mingled with short, light hairs, longer than wide (LR/WR 1.4) dorsally with deep transverse groove from the base of each eye, and one deep longitudinal medial groove from apical 1/3 of rostrum to middle of forehead. Rostrum slightly bulging at basal part. In dorsal and lateral view straight. Antennae mingled with long, light hairs; scape widened apically, slightly curved ventrally; basal antennomere two times as long as wide, apical part widened, slightly longer than antennomere II; antennomere II 1.5 times as long as wide, 2.5 times longer than III; antennomeres III - V subequal in size, slightly wider than long, shorter than VI - VII; VI - VII subequal in size, wider than long; club elongated, 1.5 times as long as antenomeres I - VII, widest just at the middle, 2.5 times as long as wide. Prothorax with wrinkled structure, wider than long (WP/LP 1.08), disc with shallow medial longitudinal groove mingled with single metallic green scales; in dorsal view slightly impressed at subapical part, widest just at the middle, narrowed to subbasal part and straight to base; anterior edge dorsally slight curved apically, posterior edge curved apically. Elytra strongly rounded, slightly longer than wide (LE/WE 1.09), strongly rugose, with moderate longitudinal hollows on all lenght; markings of shiny, metallic green, round to recumbent single scales dispersed evenly on all lenght; in dorsal view strongly widened from base to widest middle, decreased to subapical part, apex raised; in lateral view strongly raised at subbasal part, then evenly rounded to apex, LE/LP 2.19, WE/WP 1.86. Coxa, femur, tibia and tarsus smooth, shiny; femur with short light hairs on apical half; tarsus with shorter light hairs at basal half and longer hairs at apical part, inner corner with spines; tarsus with long light hairs on all lenght; tarsite I same width as II, but longer, same length and width; tarsite II wider than long.

Aedegus as shown in Fig. 5C.

Female unknown.

Differential analyses. The new species might be confused with A. inflatus Erichson, 1834 by coloration of body and elytra, but can be easily distinguished by the following characters: 1) Strongly rounded elytra of A. auroraensis sp. nov. compared to less rounded elytra in A. inflatus Erichson, 1834 ; 2) elytra dorsally with markings of green metallic single scales in A. auroraensis sp. nov. and bare in A. infletus Erichson, 1834 ; 3) apical edge of tarsite II curved apically in A. auroraensis sp. nov. and straight in A. inflatus Erichson, 1834 ; 4) stronger dorsal bulge at rostrum and forehead of A. auroraensis sp. nov.; 5) club of A. auroraensis sp. nov. bigger, more strongly elongated compared to A. inflatus Erichson, 1834 .

Etymology. The species name is dedicated to geographic locality where species is originally reported.