Glenopopillia mengi Lu & Zorn, 2018

Lu, Yuan Yuan, Zorn, Carsten, Král, David, Bai, Ming & Yang, Xing Ke, 2018, Taxonomic revision of the genus Glenopopillia (Coleoptera: Scarabaeidae: Rutelinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 58 (2), pp. 297-320 : 311-312

Glenopopillia mengi Lu & Zorn , sp. nov.

( Figs 3C,I ; 4C,I,O ; 5C,I,O )

Type locality. China, Yunnan,Jinghong, Naban River Watershed National Nature Reserve, Anmaxinzhai (forest), 22°11.75ʹN 100°38.72ʹE.

Type material (13 spec.). HOLOTYPE: ♂ (IZAS), ‘Anmaxinzhai V D | 16.05.2009 | leg. LZ. Meng | ffltñĸfẓṅƶ [= donated by Naban River Watershed National Nature Reserve] || ±•ạėffltñĸfẓ [= Yunnan, Jinghong, Naban River Watershed National Nature Reserve ] | Ẋ 麻kż (ƛff) [ = Anmaxinzhai (forest) ] | 2009.V.16 772m | 中flḣäb ffi [= IZAS] || 22.19577°N | 100.64532°E Iḛ [= flight interception traps] | JƗλ：aƚł [= leg. Meng Lingzeng] | 中flḣäbffi [= IZAS] || IOZ (E) 1966471 [p]’. PARATYPES: 2 ♂♂ ( IZAS), same data as holotype, IOZ (E) 1966472, IOZ (E) 19664731; 1 ♂ ( CZPC), same location data as holotype, 2009.V.26, IOZ(E) 1966474; 1 ♀ ( IZAS), ‘Naban II/I D | 16.05.2009 | leg. LZ. Meng | ffltñĸfẓṅƶ [= donated by Naban River Watershed National Nature Reserve] || ±•ạėffltñĸfẓ [= Yunnan, Jinghong, Naban River Watershed National Nature Reserve] | fflvḬƑ (dƙff) [=Tea Factory of Naban (rubber forest)] | 2009.V.16 732m | 中flḣäbffi [= IZAS] || 22.15843°N | 100.66487°E Iḛ [=flight interception traps] | JƗλ：aƚł [=leg. Meng Lingzeng] | 中flḣäbffi [= IZAS] || IOZ (E) 1966475 [p]’; 1♀ ( NMEC), ‘ CHINA: S-YUNNAN | (Xishuangbanna), | 23 km NW Jinghong, | vic[inity]. Na Ban ( NNNR) [= Naban River Watershed National Nature Reserve] | N22°10.04, E100°39.52 | 28.VI. 2008, 730 m, forest | leg.A.Weigel MF1 [=Malaise-Falle (Malaise trap)]’; 2 ♂♂ 5♀♀ ( PPCB), ‘ LAOS, 21°09’N 101°19’E, | Louangnamtha pr. | Namtha ~ MuangSing. | 5–31.v.1997, 900– | Vit Kubáň leg. – 1200m, || Coll. P. Pacholátko | Brno | Merhautova 68 | Czech republic [p]’.

Description of holotype (♂). Body shape. Elongate ovoid, weakly convex.

Color. Ground color blackish-brown with strong green to red metallic luster; fore legs and major part of mesotibia dark orange with metallic sheen; mesofemur, apex of mesotibia, mesotarsus and posterior legs dark brown with green metallic luster; clypeus and antenna light brown; elytra predominantly medium brown with weak metallic sheen; lateral margin, epipleura, major part of sutural interval and humeral spot black; one vague yellow spot posteriorly of scutellum; small elongate black spots at costal intervals 1, 2 and 3 connected by dark brown curved zig-zag band reaching margin posteriorly of humeral umbone; three yellow spots just posteriorly to brown cingulum as follows: inner spanning costal interval 1 to 2, middle spot on costal interval 3 and outer spanning costal interval 4 to 5.

Head. Clypeus subrectangular, disc very densely, transversely, confluently punctate; anterior corners rounded; anterior margin weakly reflexed; frons very shallowly impressed, laterally punctate like clypeus, separately punctate at middle; vertex sparsely punctate; ratio of interocular width/width of head approximately 0.66; antennal club longer than antennomeres 2–6 combined.

Pronotum approximately 1.5 times wider than long, with two deep, oblique impressions on each side (posterior impression larger than anterior) and deep median longitudinal furrow; with steep decline along lateral margin; disc extremely finely and sparsely punctate, punctures gradually larger laterad; sparse erect setae present near anterior angles and along lateral margin; anterior angles acute and strongly produced; posterior angles obtuse; sides of pronotum weakly converging anteriad in posterior two thirds, then strongly curved, strongly converging, and slightly sinuate in anterior third; basal marginal line interrupted before scutellum between level of elytral costal interval 2 on each side; all other marginal lines complete.

Scutellum nearly semicircular, broader than long, finely and sparsely punctate.

Elytra regularly striate; three inner costal intervals (1, 2 and 3) slightly more convex than interstices; strial punctures distinct, subsutural interstice with secondary stria being irregularly doubled anteriorly and disapearing in posterior third; vague, widely discontinuous, and similarly disappearing secondary striae also present on interstice 2 and 3; elytral surface with sparse micropunctation; humeral umbone and apical protuberance very prominent; opaque area at apical curvature narrow; lateral margin with wide flat paramarginal extension between humerus and middle of elytra; epipleuron broad near humerus, ending slightly posteriorly of elytral midlength; epipleuron with numerous soft short white setae near humerus and stout spiniform black setae beginning posteriorly of humerus and extending along lateral margin to apical curvature (becoming gradually larger apicad); three additional large spiniform setae near apico-sutural angle; posterior margin evenly rounded.

Propygidium with dense fringe of white setae along posterior margin covering approximately 1/3 of propygidial length in middle and 1/4 of length at sides. Pygidium strongly convex; apex broadly rounded; punctation rather sparse, transverse on disc (except across vague midline), transforming into concentrically arranged dense striolation at sides and base; with two spots of white setae near base and another two vague spots in a small depression at lateral margin; apex with several long, erect brownish setae.

Ventral thoracic surface densely covered with soft, long, white setae.

Meso-metaventral process short, compressed between mesocoxae, projecting slightly downward in lateral view, anteriorly vertical and straight; apex subrectangular and rounded; bulbiform in ventral view.

Abdominal ventrites with transverse band of dense, long, white setae in posterior half (broadly interrupted in middle) and irregular white setae on each side of anterior half of ventrites 2–4; ventrites 1–2 and anterior half of ventrite 3 carinate laterally.

Legs. Meso- and metafemur with two bands of long white setae, one along anterior margin, the second emerging from a transverse row of punctures parallel to posterior margin. Protibia bidentate, broadened, approximately 3.1 times longer than wide; proximal tooth short, situated close to the rather short, strongly curved apical tooth; inner spur short, articulated at level of proximal tooth. Metatibia fusiform; protarsus slender; protarsomere 5 (without claws) slightly longer than tarsomeres 1–4 combined; inner protarsal claw approximately 3/4 as long as protarsomere 5, deeply incised apically, upper branch spiniform, lower branch broad, obliquely truncated; outer mesotarsal claw approximately as long as combined length of mesotarsomeres 1–4, deeply incised at apex, upper branch spiniform; metatarsal claws very unequal, outer claw approximately twice as thick and 1/3 longer than inner.

Aedeagus as in Figs 5C,I,O .

Female. Protibia slender, apical tooth of protibia long and spatulate; protarsus articulated slightly basally of level of proximal tooth; inner spur long, articulated between 1/2 and 2/3 of tibial length; protarsus very slender, protarsomere 5 (without claws) shorter than tarsomeres 1–4 combined; modified claws of pro- and mesotarsi shorter, two apical branches more equal than in males; antennal club as long as antennomeres 2–6 combined.

Measurements. Total body length 10.0–12.0 mm (HT 10.8 mm), total body width 5.6–7.2 mm (HT 5.8 mm).

Morphological variation. Elytral black-brown transversal band and yellow spots vary slightly in shape and size, sometimes with another vague yellow spot between scutellum and humerus. Number of elytral spiniform setae near apico-sutural angle varies between one and three. Shape of parameres very constant.

Differential diagnosis. Glenopopillia mengi sp. nov. is distinguished from similar species by the combination of the following characters: unique color pattern of elytra – medium brown with a black/dark brown curved zig-zag band in the middle and additional vague yellow spots; punctures of subsutural interstice almost disappearing in the posterior third of elytra; epipleuron with numerous white short setae near humerus; protibia rather short and wide; white setae along posterior margin of propygidium rather sparse and short. The aedeagus is distinctive and cannot be confused with any other species of Glenopopillia . The parameres are similar to those of G. maculata , but are stouter, with the subapical lateral tooth very short. The apex of the ventral plate is equipped with a backward-pointed hook ( Figs 5C,I,O ).

Etymology. Patronymic (noun in the genitive case), named in honour of Lingzeng Meng, the collector of most of the type material, who conducted an excellent field study in the Naban River Watershed National Nature Reserve.

Collecting circumstances. These specimens were collected in the Naban River Watershed National Nature Reserve with cross window traps in the tree canopy.

Distribution. China (Yunnan Province), Laos (Louang Namtha Province).

Figures

Fig 5.Aedeagus of Glenopopillia. A–F – dorsal view, G–L – ventral view, M–R – right lateral view.A, G, M – G. forceps sp. nov. (HT); B, H, N – G. maculata Lin, 1980 (Vietnam, Bắc Giang Prov.); C, I, O – G. mengi sp. nov. (HT); D, J, P – G. rufipennis rufipennis Lin, 1980 (Laos, Houaphanh Prov.). E, K, Q – G. r. nigropicta subsp. nov. (HT); F, L, R – G. skalei sp. nov. (HT). Sc 1: Scale for A–R, except D, J, P = 1 mm; Sc 2: Scale for D, J, P = 1 mm.

Fig. 3. Habitus of Glenopopillia. A–F – dorsal view, G–L – lateral view.A, G – G. forceps sp. nov. (HT); B, H – G. maculata Lin, 1980 (Vietnam, Bắc Giang Prov.), C, I – G. mengi sp. nov. (HT); D, J – G. rufipennis rufipennis Lin, 1980 (Laos, Houaphanh Prov.); E, K – G. r. nigropicta subsp. nov. (HT); F, L – G. skalei sp. nov. (HT). Scale = 5 mm.

Fig. 4. Details of Glenopopillia. A–F – habitus, ventral view; G–L – head; M–R – propygidium and pygidium.A, G, M – G. forceps sp. nov. (HT); B, H, N – G. maculata Lin, 1980 (Vietnam, Bắc Giang Prov.); C, I, O – G. mengi sp. nov. (HT); D, J, P – G. rufipennis rufipennis Lin, 1980 (Laos, Houaphanh Prov.); E, K, Q – G. r. nigropicta subsp. nov. (HT); F, L, R – G. skalei sp. nov. (HT). Not to scale.