Chlaenius (Sphodromimus) caperatus, Qin & Germann & Liang, 2022

Qin, Yuyao, Germann, Christoph & Liang, Hongbin, 2022, Key to the Chinese species of the subgenus Sphodromimus Casale, 1984 (Carabidae, Chlaeniini, Chlaenius) with descriptions of two new species, ZooKeys 1135, pp. 61-91 : 61

publication ID	https://dx.doi.org/10.3897/zookeys.1135.93843
publication LSID	lsid:zoobank.org:pub:7E562C71-BD10-446E-9E10-2AA52A9888FB
persistent identifier	https://treatment.plazi.org/id/DC3445D1-970D-43DE-B622-8EA561F22632
taxon LSID	lsid:zoobank.org:act:DC3445D1-970D-43DE-B622-8EA561F22632
treatment provided by	ZooKeys by Pensoft
scientific name	Chlaenius (Sphodromimus) caperatus
status	sp. nov.

Treatment

Chlaenius (Sphodromimus) caperatus sp. nov.

Figs 1A-D View Figure 1 , 11 View Figures 11–16 , 17 View Figures 17–24 , 25A-E View Figures 25–27 , 34A-C View Figures 34–36 , 40 View Figure 40

Type locality.

China, Hunan, Guidong: Qiyun Shan (25.9010°N, 114.0068°E), altitude 1299.12 m.

Type material.

Holotype. Male (IZAS) [genitalia dissected and glued on plastic film pinned under specimen], Hunan, Guidong, Qiyun Shan, 25.9010°N, 114.0068°E, 1299.12 m, 2017.XI.12-14, S.P. Yu, Y.Z. Liu leg., Institute of Zoology, IZAS/Holotype Chlaenius (Sphodromimus) caperatus sp. nov. des. by Y.Y. Qin, 2022 [red label].

Paratypes. Total 8 specimens: 2 ♂♂ and 3 ♀♀ (IZAS), same data as holotype; 1 ♀ (IZAS), Hunan, Guidong, Qiyun Shan, 25.9007°N, 114.01318°E, 1487.17 m, 2017.XI.12-14, S.P. Yu, Y.Z. Liu leg., Institute of Zoology, IZAS; 1 ♂ and 1 ♀ (SCAU) "Hunan, Guidong, Dongluo, Chishuixian, 1350-1450 m, 2011.XII.1, M.Y. Tian, Q. Gao, F.F. Sun leg., SCAU. All paratypes also bear the following label: Paratype. Chlaenius (Sphodromimus) caperatus sp. nov. des. by Y.Y. Qin, 2022 [red label].

Diagnosis.

Dorsum black. PW/PL = 1.18-1.21; PAW/PBW = 0.99-1.00 (Fig. 17 View Figures 17–24 ); pronotum with anterior angles rounded, moderately projected forward; disc sparsely punctate and pubescent with deep transverse rugosities, but with a glabrous area in the middle. Elytral intervals flat, densely punctate and pubescent. Hind wings reduced. Metepisterna short, MW/ML = 1.1-1.3 (Fig. 11 View Figures 11–16 ). Apex of apical lamella rounded (Fig. 25A-E View Figures 25–27 ).

Comparisons.

This new species is most similar to Chlaenius (Sphodromimus) hunanus (Morvan, 1997) (Fig. 2A, B View Figures 2, 3 ), sharing the large size, shape of pronotum, black elytra, and reduced hind wings, but can be distinguished from the latter by: (1) PAW/PBW = 0.99-1.00 (Fig. 17 View Figures 17–24 ), (0.87-0.97 in C. hunanus , Fig. 18 View Figures 17–24 ); (2) apex of lamella of median lobe rounded (apex of lamella triangular in C. hunanus , Fig. 26A-E View Figures 25–27 ); (3) in female genitalia, receptaculum longer (shorter in C. hunanus , Fig. 35A-C View Figures 34–36 ), and seminal canal shorter (longer in C. hunanus , Fig. 35A-C View Figures 34–36 ).

Description.

BL = 20.3-22.0 mm, BW = 7.6-8.9 mm [BL = 21.0 mm, BW = 7.0 mm in holotype], PAW = 3.6-3.9 mm, PBW = 3.6-3.9 mm, PW = 5.0-5.5 mm, PL = 4.3-4.5 mm, MW = 1.9-2.0 mm, ML = 1.5-1.8 mm. Head, pronotum, elytra, legs, and venter black; antennae, labial and maxillary palpi, apex of mouthparts, and tarsomeres dark brown.

Head. Vertex punctate and pubescent with a glabrous and rugose area in the middle; antennae long, reaching middle of elytra; antennomere 3 ~ 1.5 × longer than antennomere 4.

Pronotum cordiform, PW/PL = 1.18-1.21 (Fig. 17 View Figures 17–24 ), widest at apical third; anterior margin slightly concave, its width equal to its basal width, PAW/PBW = 0.99-1.00; lateral margins rounded before middle, then distinctly narrowed to base, faintly sinuate before posterior angles; anterior angles rounded, moderately projected forward; posterior angles obtuse, slightly sharp at tips; disc gently convex, sparsely punctate and pubescent, with deep transverse rugosities, with a small glabrous area in the middle; median line distinct, not reaching anterior margin and base; basal foveae deep and long, punctate, pubescent.

Elytra elongate, EL/BW = 1.45-1.61; gently convex, widest near posterior third, rounded at apex in males, subtruncate in females; striae with fine punctures; parascutellar striae well developed; parascutellar pores present; intervals flat, densely punctate and pubescent; sutural angles sharp; hind wings reduced.

Venter densely punctate, pubescent, metepisterna (Fig. 11 View Figures 11–16 ) short, MW/ML = 1.25-1.33; abdominal sternites III-VI with one setiferous puncture each side, sternite VII with one pair of setiferous punctures in males, two pairs in females; all abdominal sternites with distinct impressions laterally.

Legs long and slender; tarsi nearly smooth dorsally.

Male genitalia. Median lobe (Fig. 25B-E View Figures 25–27 ) long, strongly bent to ventral side; apical orifice opened dorsally, long and wide, not reaching basal bulb, slightly turned to left side; in dorsal view, apical lamella (Fig. 25A View Figures 25–27 ) slightly bent to left side, length nearly equal to its basal width, apex rounded; in left lateral view, apical portion distinctly bent into a hook ventrally (Fig. 25B, E View Figures 25–27 ), basal orifice ~ 90 ° relative to preapical shaft; left paramere large and round; right paramere helical carved; endophallus with coiled flagellum; basal part of flagellum strongly bent with an oval sclerite facing the right; apical part of flagellum distinctly bent with a triangular bursa.

Female genitalia. Spermatheca (Fig. 34A-C View Figures 34–36 ) with seminal canal ~ 15 × as long as receptaculum; receptaculum short linear; seminal canal inserted at base of common oviduct; spermathecal gland rounded and inserted near apex of seminal canal; villous canal long, tortuously contorted, adhered to common oviduct.

Distribution.

(Fig. 40 View Figure 40 ) This species is known only from Guidong, Hunan. Its distribution seems isolated by a mountain barrier from C. hunanus .

Etymology.

The new species caperatus is named for its rugosity on the vertex, pronotal disc, and abdominal sternites.

Remarks.

We have not examined the types of C. (S.) hunanus , but Dr. Deuve (MNHN) kindly helped us to compare types and sent us illustrations of the apical lamella of holotype. More than 60 specimens collected from Nanling, Guangdong fit Morvan’s descriptions and illustration (1997: 17, fig. 13), and we determined them as C. (S.) hunanus . Nanling is located ~ 100 km north of the type locality of C. (S.) hunanus Jiuyi Shan, Hunan (Fig. 40 View Figure 40 ).