Agelopsis aeneoviridis ( Lopatin, 2004 ) Bezděk, 2020

Bezděk, Jan, 2020, Revision of Agelopsis (Coleoptera: Chrysomelidae: Galerucinae), Zootaxa 4731 (2), pp. 223-248 : 226-227

Agelopsis aeneoviridis ( Lopatin, 2004) , comb. nov.

( Figs 1–2 , 19 , 38 )

Liroetis (Liroetinus) aeneoviridis Lopatin, 2004: 618 (original description); Beenen 2010: 479 (catalogue).

Type locality. “ Sichuan, right bank of Niuzhihe Riv., E of Pusium Village ” .

Type examined. Holotype: ♂ ( ZIN), “ CH, Sichuan , right bank / of Niuzhihe Riv. E of / Pusiun Village / 2200- 2800m, 15- 16.6.2000 / Belousov, Kabak, Davidian [w, p] // Holotypus [r, p] // Liroetis / aeneoviridis sp. / n. [h] / det. I. Lopatin, 200 [p] 2 [w, h]”.

Redescription. Measurements. Male: 5.9 mm (holotype). Dorsal side glabrous, elongate, widened posteriorly. Head and pronotum metallic blue, elytra metallic green, legs and antennae black with metallic tint, ventral side black, last abdominal ventrite with orange semicircular apex.

Male (holotype, Fig. 1 ). Labrum transverse, with shallowly concave anterior margin and rounded anterior angles, surface distinctly convex, with transverse line of pores bearing long seta. Anterior part of head with straight anterior margin, with transverse triangular elevated keel, posteriorly produced to short process forming nasal keel, surface dull, covered with dense microsulpture and scarse several punctures bearing seta. Interantennal space 1.12 times as wide as transverse diameter of antennal socket. Interocular space wide, 3.40 time as wide as transverse diameter of eye. Frontal tubercles subtriangular, elevated, smooth, marginal parts covered with microsculpture, lustrous, separated by thin furrow. Vertex separated from frontal tubercles by deep impressed line, surface impunctate, covered with microsculpture, glabrous. Antennae slender, 0.80 times as long body, length ratio of antennomeres equals 9-5-8-11-10-10-10-10-10-9-9.

Pronotum transverse, 1.35 times as wide as long, lustrous, glabrous, widest before middle, sparcely covered with distinct punctures. Surface slightly convex with distinct transverse impression at posterior third nearly interrupted in middle. Anterior margin nearly straight, lateral margins rounded, posterior margin nearly straight, bisinuate. Anterior margin with fine distinct border, lateral margins with wider border, posterior margin with distinct narrow border. Anterior angles distinctly swollen, pronounced, posterior angles obtusangulate, pointed, all angles with setigerous pores bearing long pale seta. Scutellum short and wide, subtriangular, with widely rounded apex, microsculptured, glabrous.

Elytra 1.72 times as long as wide (measured at humeral calli) and 0.61 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 with two wide V-shaped sharp incisions, median lobe with parallel lateral margins, middle of ventrite with deep impression with semicircular posterior margin ( Fig. 38 ).

Metatrochanter not modified. Tarsi: protarsomere I wide, elongate with parallel anterior half, II triangular, I slightly wider than II, length ratio of protarsomeres equals 9-6-4-8, mesotarsomere I wide, elongate with parallel anterior half, metatarsomere I narrow, parallel, length ratio of metatarsomeres equals 11-7-4-9.

Aedeagus ( Fig. 19 ) symmetrical, robust, slightly extended subapically, apex widely round with indicated tip. In lateral view, apex slightly curved dorsally, basal two thirds widely curved, with distinct angulation at apical third.

Female. Unknown

Distribution. China (Sichuan).

Differential diagnosis. Agelopsis aeneoviridis is characterised by not modified male metatrochanters and abdominal ventrites and by presence of blunt keel behind humerus. The same combination of characters is known only in A. tibetanus . The males of both species can be distinguished by the structure of pronotum (1.35 times as wide as long and with surface punctured in A. aeneoviridis while 1.25 times as wide as long and with surface smooth in A. tibetanus ). Aedeagus of A. aeneoviridis is subapically extended and in lateral view with distinct angulation at apical third while aedeagus of A. tibetanus is parallel and in lateral view without angulation ( Figs 19 , 24 ).

Figures

FIGURES 1–4. Type specimens of Agelopsis and their labels. 1–2—Agelopsis aeneoviridis (holotype, male, 5.9 mm); 3–4—A. belousovi (holotype, male, 6.7 mm).

FIGURES 19–22. Aedeagus in dorsal, lateral and ventral views. 19—Agelopsis aeneoviridis; 20—A. belousovi; 21—A. caeruleus; 22—A. metallicus. Not to scale.

FIGURES 38–46. Abdomen in ventral and lateral views. 38—Agelopsis aeneoviridis; 39—A. metallicus (paratype); 40—A. spinipes; 41—A. tibetanus; 42, 44—A. konstantinovi sp. nov. (paratype); 43, 45—A. malaisei sp. nov. (paratype); 46—A. traxlerorum sp. nov. (holotype). Not to scale.

FIGURES 23–27. Aedeagus in dorsal, lateral and ventral views. 23—Agelopsis spinipes; 24—A. tibetanus; 25—A. konstanti- novi sp. nov.; 26—A. malaisei sp. nov.; 27—A. traxlerorum sp. nov. Not to scale.