Agelopsis belousovi Bezděk 2020, comb. nov.
Creators: name: Bezděk, Jan
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Agelopsis
Agelopsis belousovi

description: Agelopsis belousovi (Lopatin, 2004), comb. nov.
(Figs 3–4, 11, 20, 32–34, 47, 54, 61)
Liroetis (Liroetinus) belousovi Lopatin, 2004: 620 (original description); Beenen 2010: 479 (catalogue).
Type locality. “ Sichuan, S of Xichang, W sl. SE of Mt. „4282“ (NE) of Dechang Lunan Shan Mt. Ridge ”.
Type examined. Holotype: ♂ (ZIN), “ CH, S Sichuan, S of / Xichang, W sl. SE of Mt / „4282“ (NE of Dechang) / Lunan Shan Mt. Ridge / H~ 3000 m, 01.05.2001 / Belousov & Korolev l. [w, p] // Holotypus [r, p] // Liroetis / be- lousovi sp. n. [h] / det. I. Lopatin, 200 [p] 2 [w, h]”.
Additional material examined. 16 specimens — CHINA: Sichuan: 1 ♂ 1 ♀, Dayi Dafeishui Forest near Dayi, 110 km W of Chengdu, 21.-22.vi.1993, M. Trýzna leg. (VSCN); 1 ♂, Emeishan, Leidongping, 29°32´25´´N 103°19´52´´E, 2420 m, 8.-9.vi.2014, J. Hájek & J. Růžička leg. (NMPC); 1 ♂ 1 ♀, Emei Mt., 1000-2000 m, 6.vi.1997, M. Ouda leg. (MOCP); 1 ♀, Selong, Sankiangkou, 7.-8.1934, 1000 m, Friedrich leg. (NHMB); 2 ♂♂, Emei Shan, Dinshui env., ca. 1400 m, 18.vi.1996, D. Erber leg. (RBCN); 1 ♂, road Ya´an to Hanyuan, Ypansan pass, 1780-2350 m, vi.-vii.2007, Puchner leg. (RBCN); 4 ♀♀, Emei Shan, vi.1992, without additional data (2 UACB, 2 RBCN); 2 ♀♀, Emei Shan, 4.vi.1992, Sauer leg. (UACB). Yunnan: 1 ♂, Dali env., Cangshan Mts., river valley, 25°41´37´´N 100°07´45´´E, 2200 m, 23.v.2002, A. Konstantinov & M. Volkovitsh leg. (USNM).
Redescription. Measurements. Males: 6.0– 6.7 mm (holotype 6.7 mm), females: 5.8–6.0 mm. Body oval, widened posteriorly, dorsal side glabrous. Body metallic blue with oil tint, legs and antennae black with metallic tint, last abdominal ventrite with brown semicircular apical part.
Male (Fig. 11, holotype as in Fig. 3). Labrum transverse, subtrapezoidal, with shallowly concave anterior margin and rounded anterior angles, surface moderately convex, microsculptured, with four setigerous pores (two in middle part, two laterally) bearing long seta. Anterior part of head with straight anterior margin, with transversely concave elevated keel, posteriorly produced to short process, surface dull, with four long setae along anterior margin and additional shorter setae along anterior margin of antennal impressions. Interantennal space narrow, 0.88 times as wide as transverse diameter of antennal socket. Interocular space wide, 3.10 time as wide as transverse diameter of eye. Frontal tubercles transversely subtriangular, elevated, impunctate, lustrous, separated by thin furrow. Vertex separated from frontal tubercles by deep impressed line. Vertex impunctate, glabrous, semiopaque. Antennae slen- der, as long body, length ratio of antennomeres equals 9-5-9-13-13-13-13-12-12-12-15.
Pronotum transverse, 1.40 times as wide as long, lustrous, glabrous, widest at anterior third, covered with indistinct punctures. Surface moderately convex with distinct transverse impression at posterior third, shallower in middle. Anterior margin widely rounded, lateral margins rounded at anterior half and straight and slightly sinuate posteriorly, posterior margin slightly sinuate in middle, lateraly slightly oblique. Anterior margin unbordered, lateral margins with wider border, posterior margin narrowly bordered in middle part, border gradually wider laterally. Anterior angles swollen, oblique, posterior angles nearly reactangular, all angles with setigerous pores bearing long pale seta. Scutellum subtriangular, with rounded apex, impunctate, glabrous.
Elytra 1.76 times as long as wide (measured at humeral calli) and 0.69 times as long as body, divergent posteriorly, widest at posterior third. Surface covered with small dense confused punctures. Humeral calli well developed. Epipleura relatively narrow, smooth, glabrous, lustrous, gradually narrowed towards elytral apex. Macropterous.
Abdomen: last abdominal ventrite enlarged, median lobe apically extended with rounded posterior margin, surface of median lobe with deep narrow sulcus apically shallower and extended; posterior margin of ventrite with deep semicircular emarginations next to median lobe; anterior part of last ventrite elevated in middle, subconical; last ventrite in lateral view distinctly concave. Abdominal vetrite IV with two flat lamellae in middle (Figs 32–34).
Metatrochanter not modified. Tarsi: protarsomere I elongate, slightly asymmetrical with more bent outer margin, II parallel in apical half, convergent in basal half, length ratio of protarsomeres equals 9-6-4-10, mesotarsomere I elongate, subparallel, length ratio of mesotarsomeres equals 10-6-4-10, metatarsomere I narrow, subparallel, length ratio of metatarsomeres equals 13-7-5-11.
Aedeagus (Fig. 20) lanceolate, widest in midlength, apex rounded with small subtriangular process with round- ed tip. In lateral view, aedeagus flat and bisinuate, and with wave-shaped incision in midlength of dorsal side. Ven- trally with two wing-like lamellae covered with 11-12 transverse furrows, lamellae connected with lateral margins of aedeagus and laid on ventral side.
Female. First protarsomere narrow, not enlarged or modified. Antennae filiform, 0.75 times as long body. Abdominal ventrites not modified, posterior margin of last abdominal ventrite entire. Pygidium triangular, distinctly producing elytral outline. Spermatheca with elongate nodulus, cornu C-shaped (Fig. 47). Gonocoxae as in Fig. 61. Sternite VIII elongate with widely rounded apical margin, tignum relatively robust with extended apex, twice longer than sternite VIII (Fig. 54).
Distribution. China: Sichuan, Yunnan (Lopatin 2004, present study).
Differential diagnosis. Agelopsis belousovi belongs to the group of species (together with A. konstantinovi sp. nov. and A. malaisei sp. nov.) characterised by not modified male metatrochanters and enlarged last abdominal ventrite with channeled median lobe. All three species can be distinguished by the structure of aedeagus: aedeagus lanceolate with pointed tip, ventrally with two wing-like lamellae in A. belousovi (Fig. 20), apex transversely cut in A. konstantinovi sp. nov. (Fig. 25), and aedeagus flat with strongly curved apical part and carinate dorsal surface in A. malaisei sp. nov. (Fig. 26). Males of Agelopsis belousovi have abdominal ventrite IV with two small flat lamellae in middle and last abdominal ventrite is raised anteriorly (Figs 32–34) while abdominal ventrite IV is unmodified and last abdominal ventrite is more or less flat in A. malaisei sp. nov. (Figs 43, 45). Hind wings of A. konstantinovi sp. nov. are vestigial while well developed in A. belousovi.
description: Published as part of Bezděk, Jan, 2020, Revision of Agelopsis (Coleoptera: Chrysomelidae: Galerucinae), pp. 223-248 in Zootaxa 4731 (2) on pages 227-229, DOI: 10.11646/zootaxa.4731.2.3, http://zenodo.org/record/3637839