Chlaenius (Sphodromimus) yinggelingensis sp. nov.

Figs 4A-D, 12, 21, 29A-E, 37A-C, 40

Type locality.

China, Hainan, Yinggeling.

Type material.

Holotype. Male (IZAS) [genitalia dissected and glued on plastic film pinned under specimen], Hainan, Yinggeling, 2009.V.11, Xinlei Huang leg., Institute of Zoology, IZAS/Holotype Chlaenius (Sphodromimus) yinggelingensis sp. nov. des. by Y.Y. Qin, 2022 [red label].

Paratypes. Total 4 specimens: 1 ♂ (IZAS), same data as holotype; 2 ♀♀ (IZAS), Hainan, Jianfengling, Mingfenggu, 947 m, 2015.I.23, Deyao Zhou leg., Institute of Zoology, IZAS; 1♀ (IZAS), Hainan, Wuzhishan, 18°54'N, 109°41'E, 1000-1600 m, 2012.IV.18, PAN & LI leg. All paratypes also bear the following label: Paratype. Chlaenius (Sphodromimus) yinggelingensis sp. nov. des. by Y.Y. Qin, 2022 [red label].

Diagnosis.

Pronotum metallic coppery to green. PW/PL = 1.12-1.21; PAW/PBW = 0.84-0.91 (Fig. 21); pronotum cordate with posterior angles right angled, rounded at tips; disc sparsely punctate and pubescent with shallow, transverse rugosities. Elytral intervals distinctly convex, with a row of setae laterally and sparse setae centrally. Hind wings reduced. Metepisterna short or width nearly equal to length; MW/ML = 1.03-1.17 (Fig. 12). Distal half of femora red-brown, the rest of legs black.

Comparisons.

This new species is similar to Chlaenius (Sphodromimus) flavofemoratus (Figs 7A-C), in having a large size, coloration of the pronotum and femora, and the absence of a spermatheca, but can be distinguished from the latter by: (1) pronotum cordate (subquadrate in C. flavofemoratus); (2) metepisterna wider than or nearly equal to long (longer than wide in C. flavofemoratus as in Fig. 14); (3) hind wings reduced (developed in C. flavofemoratus); (4) interval convex throughout (convex basally, flat apically in C. flavofemoratus).

It is also similar to Chlaenius (Sphodromimus) peterseni (Louwerens, 1967) from the Philippines in having pronotum with green metallic luster and elytral intervals slightly convex, but differs in having meso- and metafemora with yellow coloration in the middle, pronotum with lateral margins sinuate before posterior angles, hind wings reduced (femoral black, pronotum with lateral margins straight, and hind wings developed in C. peterseni, Fig. 5A, B)

Description.

BL = 20.9-21.6 mm, BW = 7.5-7.9 mm [BL = 21.3 mm, BW = 7.7 mm in holotype], PAW = 3.4-3.6 mm, PBW = 3.7-4.0 mm, PW = 4.8-5.3 mm, PL = 4.1-4.5 mm, MW = 1.7-1.8 mm, ML = 1.5-1.6 mm. Head, elytra, and venter black; pronotum metallic green to metallic coppery; antennae, labial and maxillary palpi, apex of mouthparts, and tarsomeres dark brown; distal half of femora red-brown, the rest of legs black.

Head. Vertex sparsely, finely punctate and pubescent; antennae long, reaching middle of elytra; antennomere 3 ~ 1.5 × longer than antennomere 4.

Pronotum cordiform, PW/PL = 1.12-1.21 (Fig. 21), widest at apical third; anterior margin slightly concave, PAW/PBW = 0.84-0.91; lateral margins rounded before middle, then distinctly narrowed to base, straight before posterior angles; anterior angles rounded, moderately projected forward; posterior angles almost right angled, slightly sharp at tips; disc sparsely punctate and pubescent, with shallow transverse rugosities, without 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 = 1.67-1.73, gently convex, widest near posterior third, rounded at apex in males, subtruncate in females; basal margin sinuate, reaching the scutellum (but slightly obsolete on one side in a female); striae with deep punctures; parascutellar striae well developed; parascutellar pores present; intervals distinctly convex, with a row of setae laterally and sparse setae centrally; sutural angles obtuse; hind wings reduced.

Venter sparsely pubescent, punctate; metepisterna (Fig. 12) short or width nearly equal to length, MW/ML = 1.03-1.17; 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 a few impressions laterally.

Legs long and slender; tarsi nearly smooth dorsally.

Male genitalia. Median lobe (Fig. 29B-E) long, strongly bent to ventral side; apical orifice opened dorsally, long and wide, not reaching basal bulb; in dorsal view, apical lamella (Fig. 29A) wide and short, wider than long, apex subtruncate, each side distinctly widened and thickened; in left lateral view, apex with a denticulation bent to back; in right lateral view, each side convex into a denticulation, right side smaller than left side, basal orifice ~ 90° relative to preapical shaft; left paramere large and oval; right paramere helically curved; endophallus with flagellum thick and straight; basal part of flagellum with a disciform sclerite facing the left.

Female genitalia. Bursa copulatrix (Fig. 37A-C) asymmetric, base with a bifid irregular protrusion; villous canal long, tortuously contorted, adhered to common oviduct; spermatheca and spermathecal gland absent.

Distribution.

(Fig. 40) China (Hainan).

Etymology.

The new species yinggelingensis is named for the type locality Yinggeling, Hainan.

Remarks.

We dissected two females in C. yinggelingensis, four in C. davidi and nine in C. flavofemoratus . As a result, we could not find either spermatheca or spermathecal gland. The absence of spermatheca is uncommon in Carabidae and only occasionally found in Trechini (Deuve 1993: fig. 250). They are also absent at least in other two species of the subgenus, C. (Sphodromimus) davidi and C. (Sphodromimus) flavofemoratus (see female genitalia descriptions below).