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

description: Agelopsis spinipes (Ogloblin, 1936), comb. nov.
(Figs 7–8, 14, 23, 29–30, 40, 50, 57, 64)
Liroetis spinipes Ogloblin, 1936: 212, 406 (original description); Gressitt & Kimoto 1963: 535; Wilcox 1973: 476 (catalogue); Jiang 1988: 185; Lopatin 2004: 620 (drawing of aedeagus); Beenen 2010: 478 (catalogue); Mohamedsaid 2010: 260 (stridulation).
Type locality. “Se-Tchouen: Da-Tsian-Lou”.
Type. Holotype: ♂ (ZIN), “[blank small golden round label] // Да-ЦЗЯнь-лу / I-VII-93 / Потанин [= Da-Tsien- Lou (= Kangding), Potanin leg.] [w, h] // Liroëtis ♂ / spinipes sp. n. / 1934 [h] D. Ogloblin det. [w, p] // [blank, w, p]”.
Additional material examined. 21 specimens — CHINA: Sichuan: 1 ♂ 1 ♀, Omei Mt., 4500 ft, 10.- 22.viii.1936, D. C. Graham leg. (USNM); 4 ♂♂ 1 ♀, Emeishan, Leidongping, 29°32´25´´N 103°19´52´´E, 2420 m, 8.-9.vi.2014, J. Hájek & J. Růžička leg. (NMPC); 2 ♂♂ 2 ♀♀, Emei Mt., 1000-2000 m, 6.vi.1997, M. Ouda leg. (MOCP); 1 ♂, Emei Shan, Recept. point env., ca. 2500 m, 19.vi.1996, D. Erber leg. (RBCN); 1 ♀, Emei Mt., 180 km S of Chengdu, 1800-2400 m, 4.-6.vii.1993, Z. Jindra & M. Trýzna leg. (UACB); 2 ♂♂ 2 ♀♀, Emei Shan, vi.1992, without additional data (UACB, 1 ♂ RBCN); 1 ♀, Emei Shan, 4.vi.1992, Sauer leg. (UACB). Gansu: 1 ♂ 2 ♀♀, Lazikou valley, 34°09.9-10´N 103°48.2-51.9´E, 28.vi.2005, J. Hájek, D. Král & J. Růžička leg. (JBCB).
Redescription. Measurements. Males: 5.4–5.9 mm (holotype 5.4 mm), females: 5.9–6.9 mm. Dorsal side glabrous, elongate, subparallel, slightly divergent posteriorly. Body metallic violet or green, legs and antennae black with distinct metallic tint, basal antennomeres brownish.
Male (Fig. 14, holotype in Fig. 7). Labrum transverse, with shallowly concave anterior margin, lateral margins convergent, and rounded anterior angles, surface slightly convex, with two groups of pores placed laterally bearing long seta. Anterior part of head with straight anterior margin, surface with transverse, slightly concave, elevated keel, posteriorly produced to short process forming nasal keel, surface lustrous, with several long setae along anterior margin and some shorter setae along anterior margin of antennal impressions. Interantennal space as wide as transverse diameter of antennal socket. Eyes small. Interocular space wide, 3.33 time as wide as transverse diameter of eye. Frontal tubercles subtriangular, elevated, lustrous, separated by thin furrow. Vertex separated from frontal tu- bercles by sinuate punctate furrow, surface impunctate, glabrous. Antennae slender, 0.87 times as long body, length ratio of antennomeres equals 7-4-8-10-10-10-10-10-10-9-12.
Pronotum transverse, 1.41 times as wide as long, lustrous, glabrous, widest at apical third, covered with fine punctures. Surface moderately convex in anterior half and with distinct transverse impression at posterior third, shallower and wider in middle part. Anterior margin widely concave, lateral margins rounded in apical half, straight and convergent in basal half, posterior margin nearly straight, in middle with shallow emargination, slightly oblique in lateral parts. Anterior margin indistinctly bordered, lateral margins with wider border, posterior margin thinly bordered in middle part, gradually wider laterally. Anterior angles triangularly pronounced, posterior angles obtuse, pointed, all angles with setigerous pores bearing long pale seta. Scutellum subtriangular, with widely rounded apex, lustrous, glabrous, covered with fine microsculpture.
Elytra 1.69 times as long as wide (measured at humeral calli) and 0.72 times as long as body, slightly divergent posteriorly, widest at posterior third. Surface covered with small dense confused punctures. Humeral calli well developed. Epipleura relatively narrow, gradually narrowing towards apex. Macropterous.
Abdomen: last abdominal ventrite with two shallow U-shaped incisions, median lobe short with rounded posterior margin, median lobe shallowly impressed (Fig. 40).
Metatrochanter enlarged, pronounced to distinct tooth (Fig. 29). Tarsi: protarsomere I elongate subtriangular, II triangular, I as wide as II, length ratio of protarsomeres equals 8-5-4-7, metatarsomere I narrowly subtriangular, length ratio of metatarsomeres equals 10-7-4-9.
Aedeagus (Fig. 23) almost parallel, very slightly and widely constricted before middle, apex subtriangular with margins slightly rounded. In lateral view, aedeagus widely curved. Ventral side with shallow subapical impression.
Female. Metatrochanters not modified. Spermatheca with slightly elongate nodulus, cornu C-shaped (Fig. 50). Gonocoxae as in Fig. 64. Sternite VIII spade-shaped, with straigth posterior margin with small shallow emargina- tion in middle, tignum thin, 1.8 times as long as sternite VIII (Fig. 57).
Variability. The male from Gansu has slightly wider subapical part of aedeagus and slightly shorter tooth of metatrochanter (Fig. 30).
Distribution. China: Sichuan (Ogloblin 1936, present study), Gansu (present study).
Differential diagnosis. Agelopsis spinipes belongs to the group with modified male metatrochanters (together with A. metallicus and A. traxlerorum sp. nov.). Male metatrochanters of A. spinipes are narrow with tooth directed obliquely (Figs 29–30) while the male of A. metallicus has wide metatrochanters with curved tooth directed posteriorly (Fig. 28) and male of A. traxlerorum sp. nov. has metatrochanters wedge-shaped without distinct tooth (Fig. 31). All three species can be disntinguished also by the structure of aedeagus (Figs 22, 23, 27).
In habitus Agelopsis spinipes is similar to A. tibetanus but males of A. tibetanus have no modified metatrochanters. Moreover, elytra of A. spinipes are not keeled behind humerus while keeled in A. tibetanus.
description: Published as part of Bezděk, Jan, 2020, Revision of Agelopsis (Coleoptera: Chrysomelidae: Galerucinae), pp. 223-248 in Zootaxa 4731 (2) on pages 232-233, DOI: 10.11646/zootaxa.4731.2.3, http://zenodo.org/record/3637839