Pterostichus (Circinatus) cavazzutianus s. str.

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 : 35

Taxon classification Animalia Coleoptera Carabidae

Pterostichus (Circinatus) cavazzutianus s. str. replacement name Figures 5, 35, 57, 72, 91, 114

Pterostichus (Circinatus) cavazzutianus s. str. Synonym: cavazzutii Allegro & Sciaky, 2010: 8 (Original: Pterostichus ( Circinatus ); holotype deposited in collection of Allegro). Junior homonym of Pterostichus (Sinosteropus) barbarae cavazzutii Sciaky & Facchini, 2003.

Type locality.

Sichuan: Ebian, Yizhi Yakou (= Yizi pass), Xiaoliang Shan, Si He (= Xihe, or Heizhugou Town), 2800-3100 m.

Type material examined.

Paratype of Pterostichus cavazzutii Allegro & Sciaky (CRS): male, board mounted, genitalia dissected and glued on board, pinned under specimen, "CHINA S Sichuan / Pass btw Xihe/Hongxi / Ta Yan Ping, 17.-25.6. / 1999 leg. V. Benes"; "PARATYPUS ♂/ Pterostichus / (Circinatus)/ cavazzutii sp. n. / Allegro & Sciaky det. 2010" [red label].

Non-type material examined

(19 specimens). 8 males, 3 females (IZAS), "China, Sichuan Prov., Yizi pass btw. Meigu county and Ebian county, mixed forest; N28.67477 E103.05248; 2923 m; 2012.VI.15; by pitfall trap; SHI Hongliang & LIU Ye lgt."; 1 female (IZAS), "China, Sichuan Prov., Yizi pass btw. Meigu county and Ebian county, mixed forest; N28.67477 E103.05248; 2923 m; 2012.VI.12;in dead log; SHI Hongliang & LIU Ye lgt."; 4 males, 1 female (IZAS), "China, Sichuan Prov., Meigu county, Dafengding nat. cons., Hongxi station, mixed forest; 2541 m, N28.65850 E103.06123; 2012.VI.15; by pitfall trap; SHI Hongliang & LIU Ye lgt."; 1 male, 1 female (IZAS), "China, Sichuan Prov., Ebian county, Heizhugu forestry park, 2888 m, N29.02373 E102.98473; 2012.VI.17; by pitfall trap; rhododendra forest with bamboo, YANG Ganyan & LIU Ye lgt.".

Nomenclature notes.

We here propose Pterostichus cavazzuttianus as a replacement name for Pterostichus cavazzuttii Allegro & Sciaky, 2010, preoccupied by Pterostichus cavazzuttii Sciaky and Facchini, 2003.

Diagnosis.

Pronotum usually with three mid-lateral setae; hind angle completely rounded; basal fovea punctate; lateral margin of elytron narrow and deep; males with terminal sternum slightly depressed in middle, not rugose in depression; apical lamella of aedeagus located on right side of aedeagal apex, basal width approx same as length.

For comparisons between Pterostichus cavazzutianus s. str. and the subspecies Pterostichus cavazzutianus mianningensis subsp. n., see the diagnosis of Pterostichus cavazzutianus mianningensis ssp. n. This species is similar to and sympatric with Pterostichus adelphus sp. n. For their comparisons see the diagnosis of Pterostichus adelphus sp. n.

Supplemental description.

Male sternum. Penultimate sternum unmodified; terminal sternum slightly depressed in middle, apex of sternum weakly but distinctly bending downwards, almost smooth inside sternum depression (Fig. 114). Endophallus (Figs 35D, E, F) short, bent to ventral side across apical lamella, and then turned to aedeagal base; gonopore (gp) located at approx same level as apical lamella. Three distinct lobes recognized: ventral-basal lobe I (vb-I) small, close to base of apical lamella, compressed, upper surface heavily scaled, apex pointed; ventral-basal lobe II (vb-II) large and long, close to apical lamella, pointing to ventral face of median lobe, upper surface strongly chitinized, lower surface membranous, apex capitate and scaled; ventral-apical lobe (va) at right side of vb-II, its main body strongly chitinized, forming a large piece with notched apex; right lobe (rl) membranous, very small and indistinct. Female genitalia. Spermatheca with seminal canal approx three times as long as receptaculum; receptaculum capitate (Fig. 57), club approx half length of receptaculum; seminal canal inserted at base of common oviduct, base of seminal canal sclerotized. Stylomere II with two ensiform setae at outer margin, and one at basal third of inner margin; two very short nematiform setae located in a furrow near apex. Female sternum VIII (Fig. 72B) evenly chitinized; posterior margin with fine and sparse setae, almost straight, notched in middle; middle transparent region small, approx semicircular, without oblique extensions, adjacent to anterior and posterior notches in middle. Female tergum VIII (Fig. 72A) semi-chitinized, posterior region without denser pigmentation, anterior margin without notch in middle, posterior margin evenly arcuate.

Distribution.

The nominotypical subspecies is only recorded from localities near the border between Meigu and Ebian County in south Sichuan (Map 2). It is sympatric with three other Circinatus species, Pterostichus bullatus , Pterostichus adelphus sp. n. and Pterostichus zhygealu sp. n.

Etymology.

The name Pterostichus cavazzutii is preoccupied by a subspecies Pterostichus (Sinosteropus) barbarae cavazzutii Sciaky & Facchini, 2003. We therefore propose a replacement name Pterostichus cavazzutianus for this species, respecting the authors’ original notion by changing only the suffix.

Affinities.

This species seems to be close to Pterostichus adelphus sp. n. in their similarities of elytral microsculpture and short apical lamella of aedeagus.