Amara (Curtonotus) gansuensis Jedlicka, 1957

Fig. 3

Amara (Curtonotus) gansuensis Jedlička, 1957: 26 (type locality: Gansu, China; holotype in NMPC); Hieke 1993: 98.

Amara (Curtonotus) pseudoseishini Hieke, 1990: 269 (type locality: "Chin Ling Shan" [= Qinling mountains, China], approx. 34°N, 108°E; holotype in ZMUC); synonymized by Hieke 1993: 98.

Specimens examined.

8 males, 9 females (CBJFU), China, Beijing, Mentougou District, Xiaolongmen Forest Park, 1100 m, 2014.8~2019.8 ; 1 female (CBJFU), China, Beijing, Huairou District, Education Center of Beijing University of Agriculture, 2016.07.30, Pingzhou Zhu leg. ; 1 male, 3 females (CBJFU), China, Beijing, Songshan National Nature Reserve, 40.50806°N, 115.79111°E, 778 m, 2013.07.22 -08.5, Liubo leg. ; 1 female (CBJFU), China, Hebei, Chongli, CN2, 40.8814°N, 114.9499°E, 718 m, 2018. 10, Wenhao Hu leg. ; 1 female (CBJFU), China, Shanxi, Gujiao, Kangjialiang Village, 37.5316°N, 112.19°E, 1230 m, 2021.09.10, Xiaojie Sun leg. ; 2 females (CLYH), China, Hebei, Zhangjiakou, Hailiutu, Dayuedai, 41.176428°N, 114.512037°E, 1390 m, 2022.09.11, Cong Wang leg.

Chinese common name.

甘肃暗步甲 .

Diagnosis.

Medium-sized species, BL = 9.6-12.0 mm; dorsum shining black, legs reddish brown; head small, ~ 1/2 of pronotum maximum width, with one supraorbital seta. Pronotum cordate (Fig. 3B), densely punctate at base, sparsely punctate at mid-anterior region; lateral margins strongly sinuate before posterior angles; lateral grooves deeply incised, a little expanded, and distinctly punctate; posterior angles acute and laterally protruded. Elytra elongated, widest after middle; sides of abdominal sternites densely punctate. Male mesotibiae projection (Fig. 3C) composed of two small denticles; the proximal denticle acutely pointed a little beyond middle; distal denticle on the midpoint between the proximal one and tibiae apex. Male genitalia with apical lamella (Fig. 3F) elongate, subtriangular, almost straight, narrowed to apex; gonocoxite 2 (Fig. 3G) of ovipositor elongated, length ~ 1.6 × greatest width, apex a little narrowed.

Comparison.

This species can be distinguished from the other four Chinese species belonging to this species group by its deeply incised and punctate pronotum lateral grooves.

Distribution.

China (Beijing, Hebei*, Gansu, Liaoning, Shaanxi, Shanxi*), North Korea, Russia (Far East).

Remarks.

According to our examined specimens, the pronotum of this species exhibits a variable length of the sinuation before the posterior angles.