Chaetocnema (Udorpes) kumaonensis Scherer, 1969

Ruan, Yongying, Yang, Xingke, Konstantinov, Alexander S., Prathapan, Kaniyarikkal D. & Zhang, Mengna, 2019, Revision of the Oriental Chaetocnema species (Coleoptera, Chrysomelidae, Galerucinae, Alticini), Zootaxa 4699 (1), pp. 1-206 : 162-164

67. Chaetocnema (Udorpes) kumaonensis Scherer, 1969

( Fig. 94 )

Chaetocnema kumaonensis Scherer, 1969: 158 . TL: India. TD: NHMB.

Distribution: China, Nepal, India ( Scherer, 1969).

Host plants: Unknown.

Description: Body length 1.90–2.10 mm, body width 1.05–1.10 mm. Ratio of elytron length (along suture) to width (maximum): 2.40–2.50. Ratio of pronotum width (at base) to length: 1.45–1.55. Ratio of length of elytron to length of pronotum (along middle): 2.50–2.60. Ratio of width of elytra at base to width of pronotum at base (in middle of humeral calli): 1.15–1.20. Ratio of maximum width of elytra to maximum width of pronotum: 1.40–1.45.

Dorsum coppery brown to bronzy. Antennomeres 1–5 completely yellow, 6–11 brown. Tibiae yellow brown. Pro- and mesofemora light brown. Metafemora dark brown.

Head hypognathous. Frontal ridge wide and flat. Ratio of width of frontal ridge to width of antennal socket: 2.50–2.70. Frontolateral sulcus absent. Suprafrontal sulcus deep, with a pit in middle. Orbital sulcus moderately developed, shallower than supraantennal sulcus. Punctures on vertex uneven, with smaller ones in middle and larger ones near eye. Number of punctures on orbit: approximately 5 (extremely closely placed near each eye, rugged). Frons with middle area flat and glabrous, lateral sides more closely covered with large punctures; punctures on frons distinctly larger than those on vertex. Number of setae on clypeus: approximately 20. Number of setae on labrum: 6. Anterior margin of labrum straight.

Pronotum without longitudinal impressions near basal margin. Deep row of large punctures at base of pronotum absent. Pronotal base evenly convex. Lateral margins of pronotum slightly convex, converging forward. Anterolat- eral prothoracic callosity moderately developed, truncate, facing fronto-laterally. Posterolateral prothoracic callosity poorly developed. Diameter of pronotal punctures 2 to 4 times smaller than distance between adjacent punctures.

Elytra with convex sides. Humeral callus well developed. Scutellar row with punctures geminate. Remaining rows of elytral punctures regular and single. Interspaces between striae of punctures smooth and glabrous, without minute punctures. First male protarsomere slightly larger than second, larger than that in female. Excavation on metatibia shallow. Large lateral denticle on metatibia obtuse. Metatibial serration proximal to large lateral denticle absent.

Aedeagus parallel-sided. Apex of aedeagus in ventral view narrowing abruptly. Ventral longitudinal groove poorly developed. Apical denticle in ventral view prominent, with truncate apex. Minute transverse wrinkles on ventral side absent. Aedeagus in lateral view unevenly curved, with maximum curvature situated basally.

Spermathecal receptacle sinuated. Basal part of spermathecal duct straight. Spermathecal pump much shorter than receptacle, with apex flat. Receptacle basally as wide as apically. Apex of vaginal palpus narrowly rounded. Anterior end of anterior sclerotization angulated. Posterior sclerotization longer than wide. Posterior sclerotization as wide as anterior. Tignum anteriorly curved and a little wider than middle, posterior sclerotization spoon shaped.

Types: 1♂ (Holotype, in NHMB), 1) Dehra Dun , India: Mussoorie, 2006 m, VIII. 1961, leg. G. Scherer; 2 ) ♂; 3) Holotypus Chaetocnema kumaonensis sp. nov. det. Dr. G Scherer 1965.

Material: 1♂ ( IZCAS), China, Yunnan, Dli-Lijiang Rd. 72 km 05.VI.2002, bushes 2500m N26°09'41", E100°10'14", leg. Konstantinov & M. Volkovitsh, Chaetocnema kumaonensis Scherer det. Ruan , 2017; 2♂ ( USNM), Nepal, Lantang Nat. Park Chandanbari-Dhunche, 05.V.2000, 1900–3250 m, Konstantinov, Lingafelter, Volkovitsh ; 2♂ 2♀ ( BMNH), India, Jhatingri, Mahdi, Punjab , 6000 ft, H. G. C., H. G. Champion Coll., B. M. 1953–156 ; 1♂ ( BMNH), India, Punjab, Murree Hills , Thobba, H. Roberts Coll., B. M. 1926–395 .

Remarks: This species resembles C. zangana . However, in C. kumaonensis , lateral margins of pronotum are more convex, and the anterolateral calli are much weakly developed; while in C. zangana , lateral margins of pronotum are nearly straight, and the anterolateral calli of pronotum are truncate and strongly developed. In C. zangana , head and pronotum are finely granulated, while in C. kumaonensis head and pronotum are smooth and shiny, not granulated.

Figures

FIGURE 94. Chaetocnema kumaoensis. A Male habitus. B Pronotum and peri-scutellar area. C Head, frontal view. D Aedeagus, ventral view. E Aedeagus, lateral view. F Apex of aedeagus, ventral view.