Apteroloma qiului Jiang, Zhang & Wang 2021, sp. nov.

Apteroloma qiului Jiang, Zhang & Wang sp. nov.

(Figs. 1–3)

Type material (2 specimens, 2 ♂♂). Holotype: CHINA: ♂, labelled ‘ China: Hubei Province (Oi 北省), Shennongjia Forest Region (ṖĿ 架ẇ区), Baishanyuan (448 provincial highway, 柏杉园, 448省ă), elevation 1646 m, 31°37′32″N, 110°22′40″E, 2018.05.13, Lu Qiu leg.’ (SHNU). Paratype: CHINA: (1 ♂), same label data as the holotype (SHNU).

Description. Large species, body dark brown with legs, antennae, mouthparts and margins of pronotum reddish brown.

Head (Fig. 1B), wider than long, widest across the eyes. Dorsal surface shiny, covered with sparse large punctures and longitudinal microsculpture. Clypeus near rectangular, with a pair of long setae and a pair of shorter setae, apical margin slightly concave. Labrum with obviously concave apical margin, three pairs of long setae present near base, another three pairs of long setae present at apical margin, each lateral margin with a long seta at middle. Apex of mandible simple and acutangular, inner side with two small teeth. Eyes large, oval, each eye with two long setae nearby, the anterior one located before the level of eyes, the posterior one located near the level of hind margin of eyes. Antenna (Fig. 2A) reddish brown, much longer than length of elytra, surface finely covered with short setae, and each antennomere with several long setae near apex. Apical antennomere with an acutangular apex.

Pronotum (Fig. 1B), transverse, widest in middle. Surface shiny, covered with sparse punctures and transverse microsculpture, punctures absent at disc. Anterior margin weakly emarginate, lateral margins distinctly bordered and with several short setae. Posterior margin weakly curved at middle. Anterior angles large and rounded, posterior angles obtuse. Basal area with several short setae.

Elytra broadly oval, each elytron with nine regular striae, the third striae with ca. 64–66 medium-sized punctures. Surface covered with sparse short setae. Shoulders rounded, lateral margins smooth, withour serration. Elytral epipleura finely covered with dense, small punctures. Metathoracic wings fully developed.

Aedeagus (Figs 2B–E) near symmetrical, evenly rounded with elongate, apex near straight in lateral views. Sides before apex broad and becoming narrower in dorsal and ventral view, becoming wider in lateral view. Apex (Fig. 2E) rounded with a small blunt tip.

Measurements (mm). BL 6.94–7.21; HL 1.03–1.07, HW 1.60–1.63; PL 1.43–1.47, PW 2.17–2.27; EL 4.40– 4.75, EW 3.35–3.50.

Female, unknown.

Distribution. China: Hubei Province.

Biological notes. Both adults of the new species were collected under rocks near a small river which is near the 448 provincial highway (Fig. 3, information provided by Dr. Lu Qiu).

Etymology. This species is named in honor of Dr. Lu Qiu (Chongqing, China), who collected the new species and donated it to us for study.

Diagnosis. Apteroloma qiului sp. nov. is most similar to A. jinfo Růžička, Schneider & Háva, 2004 and A. zhejiangense Tang, Li & Růžička, 2011, all of them sharing similar habitus characters, large body size (> 6.5 mm), dorsum dark brown with uniformly ferruginous appendages, pronotum with wide base, and aedeagus with elongate apex in lateral view. However, the new species can be distinguished from the latter two species by the following characters: 1) disc of pronotum without punctures (with distinct punctures in A. zhejiangense, with sparse punctures in A. jinfo); 2) aedeagus becoming wider near apex, widest behind the middle in lateral view (not include the base of aedeagus, not becoming wider near apex and widest before the middle in other two species); 3) ventral and dorsal aspects of the aedeagus widest near base (with almost same width in base and apex in A. zhejiangense, widest near apex in A. jinfo).