Pterostichus (Circinatus) baenningeri Jedlicka , 1931

Shi, Hongliang & Liang, Hongbin, 2015, The genus Pterostichus in China II: the subgenus Circinatus Sciaky, a species revision and phylogeny (Carabidae, Pterostichini), ZooKeys 536, pp. 1-92 : 29-32

Taxon classification Animalia Coleoptera Carabidae

Pterostichus (Circinatus) baenningeri Jedlicka, 1931 Figures 12, 40, 62, 78, 98, 119

Pterostichus (Circinatus) baenningeri Jedlicka 1931: 24 (Original: Pterostichus (incertae sedis); Lectotype deposited in NMPC); Jedlička 1962: 299 ( Pterostichus (incertae sedis)); Sciaky 1996: 221; Bousquet 2003: 488; Lorenz 2005: 280; Allegro and Sciaky 2010: 6.

Type locality.

Chongqing: Jinfoshan Mt. (N29.10°, E107.21°). The labels of type series only indicate the locality Chung-King (= Chongqing). But the preface of the original literature ( Jedlička 1931) indicated that all material was collected from Kinfushan (= Jinfoshan) of Chung-king (= Chongqing) in May and June 1929.

Type material examined.

Lectotype (designated herein) of Pterostichus baenningeri Jedlicka (NMPC): male, body length = 11.0 mm, board mounted, genitalia dissected and mounted on plastic film, pinned under specimen, "CHUNG-KING / Sz tschuan / Coll Dr. Becker"; “TYPE” [red label]; "Mus. Nat. Pragae / Inv. 22374" [orange label]; "Baenningeri / type, mihi / Det. Ing. Jedlička” [pink label]. Paralecototypes of Pterostichus baenningeri Jedlicka , 3 males (NMPC) "CHUNG-KING / Sz tschuan / Coll Dr. Becker"; ”TYPE” [red label]; "Mus. Nat. Pragae / Inv. 22375"(22376 and 22377 in other two) [orange label]; "Baenningeri / mihi / Det. Ing. Jedlička”. 1 male (MSNM) "CHUNG-KING / Sz tschuan / Coll Dr. Becker"; ”TYPE” [red label]; " Pterostichus / Baenningeri / sp. n. / Det. Ing. Jedlička” [pink label].

Notes on types.

According to the original description, this species was described based on 11 males, but a holotype was not designated in the original

Description.

In the collection of NMPC, a total of four syntypes was found, with the first one (male) bearing a pink determination label and the others bearing white labels. We designate the syntype bearing the pink label, with a serial label no. 22374, as the lectotype.

Non-type material examined

(4 specimens). 1 male, 1 female (IZAS), "China, Chongqing, Nanchuan, Jinfoshan Mt., near the peak, stone forest garden. 2185 m, N29.02708, E107.18507, 2012.VIII.19, pit fall trap, broadleaf forest with bamboo, SHI Hongliang, HUANG Xinlei & LIU Yizhou lgt."; 1 male (IZAS), same data, but: "2012.VIII.17 day, under stone"; 1 male (NHMB), "China, SE Sichuan, Jinfo Shan, 29°01N 107°14E, 1700-1950 m, 24-29.VI.98. J. Schneider".

Diagnosis.

Pronotum with single mid-lateral seta; posterior seta close to hind angle; hind angle forming indistinct obtuse angle; elytron with microsculpture almost invisible; males with two large tubercles on terminal sternum; fifth tarsomeres setose beneath.

This species differs from all other known Circinatus species in having the fifth tarsomeres setose beneath, except for Pterostichus camelus sp. n. These two species are so different that they can be separated by several characters, such as the different number of pronotal mid-lateral setae, pronotal hind angle shape and so on. Pterostichus maitreya sp. n., Pterostichus baenningeri , Pterostichus yan sp. n., Pterostichus ailaoicus sp. n. and Pterostichus miao sp. n. are considered close to each other. For comparisons see Table 1 under Pterostichus maitreya .

Supplemental description.

Male sternum. Penultimate sternum not modified; terminal sternum with two large tubercles with indistinct borders, covering approx one third length of sternum; tubercles a little before middle of sternum, distance between tubercles a little greater than distance between setae on penultimate sternum; region between tubercles strongly depressed (Fig. 119). Endophallus (Fig. 40D, E, F) bent to ventral side across left side of aedeagus, major portion of endophallus located on ventral side of aedeagus (in lateral view); gonopore (gp, gonopore lobe folded in Fig. 40) located at level a little beyond apical lamella, pointing to aedeagal apex. Six distinct lobes recognized: basal lobe (bl) close to base of apical lamella, its main portion membranous, decorated with sparse scales, covered by a narrow chitinized piece; ventral lobe (vl) very large, bearing two small sub-lobes (vl-I, vl-II), major portion of vl membranous, sub-lobes with apex strongly scaled; vl-I with heavy and dense scales, its apex darkest in full endophallus; vl-II on right side of vl-I, wider than vl-I; left lobe (lf) located on left side of endophallus, a little larger than vl-I, apex rounded and scaled, distant from vl; right lobe (rl) small and strongly pointed, clavate with rounded apex, apex scaled; pre-apical lobe (pa) very small, on ventral face of endophallus, just before gp, without decoration. Apical patch (ap) is a scaled region near gp, not pointed, on right side of endophallus. Endophallus without any chitinized piece. Female genitalia. Spermatheca with seminal canal approx two times as long as receptaculum; receptaculum capitate (Fig. 62), club approx half length of receptaculum; seminal canal inserted at base of common oviduct, base of seminal canal not sclerotized. Stylomere II with two ensiform setae at basal half of outer margin, and a small one near middle of inner margin; two short nematiform setae located in a furrow near apex. Female sternum VIII (Fig. 78B) with setae on posterior margin, setae on middle region heavier; posterior margin almost straight, slightly notched in middle; posterior region chitinized, anterior region semi-chitinized, without denser pigmentation, deeply notched in middle; middle transparent region arrow-shaped, adjacent to anterior and posterior notches in middle. Female tergum VIII (Fig. 78A) semi-chitinized, with sparse and very fine spots; lateral-anterior region with darker patches; anterior margin slightly notched in middle, posterior margin evenly arcuate.

Distribution.

So far, this species is known only from the type locality, Jinfoshan Mt. of Chongqing, China. (Map 1) The altitude range is 1700-2185 m.

Affinities.

Pterostichus baenningeri is close to Pterostichus miao sp. n., Pterostichus maitreya sp. n., Pterostichus ailaoicus sp. n. and Pterostichus yan sp. n. in their similarities in male terminal sternum and male genitalia. Although the presence of setae beneath the fifth tarsomeres of Pterostichus baenningeri is unique in this species group, Pterostichus baenningeri seems not to be an isolated species. Thus, the fifth tarsomeres setose beneath should be considered as autopomorphies.