Pterostichus (Orientostichus) pulcher Sciaky & Allegro, 2013

Yin, Wenqi, Zhu, Pingzhou & Shi, Hongliang, 2023, Taxonomic study on the subgenus Orientostichus, the Pterostichus pulcher species group (Coleoptera, Carabidae, Pterostichus), ZooKeys 1175, pp. 163-185 : 163

Pterostichus (Orientostichus) pulcher Sciaky & Allegro, 2013

Figs 24 , 28 , 31-33 , 39 Chinese vernacular name: 俊通缘步甲

Pterostichus pulcher Sciaky & Allegro, 2013: 114. (holotype in IZAS; type locality: CHINA: Prov. Sichuan, Yizhi Yakou).

Material examined.

Holotype: ♂: " China, Sichuan merid. E’bian - Yizhi Yakou , Xiaoliang Shan - Si He. 2800-3100 m, 2007.VII.19, Cavazzuti P.F. leg.", "2013 from Sciaky.", " HOLOTYPE ♂ Pterostichus (Orientostichus) pulcher sp. nov. des. Sciaky & Allegro, 2013" [red label] . Paratypes: 8 ♂: " China, Sichuan Prov., Yizi pass btw., Meigu county and E’bian county, mixed forest; N28.67477, E103.05248", " 2923 m; 2012.VI.15; by pitfall trap; Shi Hongliang & Liu Ye leg. Institute of Zoology , CAS.", " PARATYPE of Pterostichus (Orientostichus) pulcher sp. nov. des. Sciaky & Allegro, 2013" [red label] . Non-type materials: 3 ♂ and 6 ♀: " Sichuan province, Leshan city, e’bian Yi Autonomous county , Heizhugou No. 615 forestry centre, 103.055994E, 28.676587N, 2859 m, Zhudong Liu, Zhiming Li and Tao Li lgt., 2019.VII.22 " ; 18 ♂ and 9 ♀: " Sichuan province, Leshan city, e’bian Yi Autonomous county , Heizhugou No.615 forestry centre, 103.055994E, 28.676587N, 2859 m, Zhudong Liu, Zhiming Li and Pingzhou Zhu lgt., 2020.V.28 " .

Diagnosis.

Elytra with several large foveate discal pores on intervals 3, 5, and 7, forming strong catenulate sculpturing. Antennomere 3 without accessory setae. Pronotum subcordate, slightly narrowed to base (PBW/PW = 0.75-0.81); lateral margins evidently sinuate before posterior angles, posterior angles acute at apex, distinctly projected laterally; lateral margins with 2-4 mid-lateral setae; pronotal disc with shallow transverse wrinkles; basal foveae with inner and outer grooves well-defined (Fig. 32 ), area between them strongly convex. Male sternite VII with single well-defined smooth tubercle (Fig. 39 ). Apical lamella of male genitalia elongate (LL/LW = 1.75-1.95), lateral margins subparallel to apex, apex rounded (Fig. 33 ); endophallus with U-shaped bsp, left branch evenly convex on dorsal margin (Figs 24 , 28 ).

Comparison.

P. pulcher is most similar to P. jialini sp. nov. for their interval 7 with several foveate discal pores. This character clearly distinguishes them from the other five species in the species group. The comparisons between these two species were provided under P. jialini sp. nov.

Distribution.

This species has a narrow distribution range on the border of Meigu and E’bian counties, Liangshan Yi Autonomous Prefecture, but locally abundant (Fig. 42 ).

Species removed from subgenus Pterostichus Orientostichus Sciaky & Allegro

Figures

Figure 42. Distribution of the taxa of Pterostichus pulcher species group in Sichuan province, China. Brown: P. pemphis sp. nov. Yellow: P. orbicollis sp. nov. Red: P. leo sp. nov. Purple: P. liyuani sp. nov. Blue: P. condylus sp. nov. Green: P. jialini sp. nov. Orange: P. pulcher Sciaky & Allegro.

Figures 19 - 24. Endophallus of Pterostichus pulcher species group, left lateral view and right lateral view 19 P. pemphis sp. nov., paratype from Zhaojue county 20 P. orbicollis sp. nov., paratype from Longzhoushan mountain, Huili county 21 P. leo sp. nov., paratype from Shizishan mountain, Jinyang county 22 P. liyuani sp. nov., paratype from Luojishan mountain, Puge county 23 P. condylus sp. nov., paratype from Mianning county 24 P. pulcher Sciaky & Allegro, paratype from Yizi Yakou, E'bian county to Meigu county. Scale bar: 1 mm. Abbreviations: gp: gonopore, gpl: gonopore lobe, bsp: basal sclerotized projection, vb: ventral basal lobe.

Figures 25 - 30. 25 - 28 endophallus bsp of Pterostichus pulcher species group, left lateral view 25 P. orbicollis sp. nov., paratype from Longzhoushan mountain, Huili county 26 P. liyuani sp. nov., paratype from Luojishan mountain, Puge county 27 P. condylus sp. nov., paratype from Mianning county 28 P. pulcher Sciaky & Allegro, paratype from Yizi Yakou, E'bian county to Meigu county 29, 30 Endophallus of Pterostichus (Orientostichus) spp., left lateral view and right lateral view 29 P. prattii Bates, 1890, a male from Sanming city, Fujian province 30 P. curtatus Fairmaire, a male from Heqing county, Yunnan province. Scale bars: 1 mm. Abbreviations: gp: gonopore, gpl: gonopore lobe, bsp: basal sclerotized projection, vb: ventral basal lobe.

Figures 31 - 33. Holotype of Pterostichus pulcher Sciaky & Allegro, 2013 31 habitus and labels 32 pronotum 33 male genitalia, left lateral view and dorsal view of median lobe of aedeagus. Scale bars: 5 mm (31); 1 mm (32, 33).

Figures 34 - 39. Male sternum VII of Pterostichus pulcher species group spp. 34 P. pemphis sp. nov., holotype 35 P. orbicollis sp. nov., holotype 36 P. liyuani sp. nov., holotype 37 P. condylus sp. nov., holotype 38 P. jialini sp. nov., holotype 39 P. pulcher Sciaky & Allegro, holotype. Scale bar: 1 mm.