Glenopopillia forceps Zorn & Lu, 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 : 301-305

Glenopopillia forceps Zorn & Lu , sp. nov.

( Figs 3A,G ; 4A,G,M ; 5A,G,M )

Type locality. India, Meghalaya, 3 km E of Tura, 25°30’N 90°14’E, 500–1150 m a. s. l.

Type material (21 spec.). HOLOTYPE: ♂ ( NMPC), ‘NE INDIA; MEGHALAYA; 1999 | 3km E of Tura; 500–1150m; | 25°30’N 90°14’E; 1. – 8.v. | Zd. Koštál lgt [p]’. PARATYPES: 3 ♂♂ 12 ♀♀ ( CZPC), same data as holotype; 1 ♂ 2 ♀♀ ( IZAS), same data as holotype; 1 ♀ ( CZPC), ‘NE INDIA; MEGHALAYA; 1999 | 3km E of Tura; 500–1150m; | 25°30’N 90°14’ E; 15. –22.iv. | Zd. Koštál lgt [p]’; 1 ♀ ( PPCB), ‘NE INDIA, Meghalaya state | West Garo Hills reg., TURA | 5–7.V.1996, alt. 700± 100m, | GPS N25°30.7’ E90°13.9 (WGS 84) | E. Jendek & O. Šauša leg. || 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; legs dark orange except for mesoand metatarsus, meso- and metafemur, and apical part of metatibia being dark brown with green metallic luster; clypeus and antenna light brown; elytra including all margins, epipleura and suture blackish-brown with weak metallic sheen; a large oblique reniform yellow spot between humerus and costal interval 1 posteriorly not reaching middle of elytron, one small elongate yellow spot in anterior part of costal interval 5, two small yellow spots slightly posteriorly of middle: one elongate in costal interval 3, another transverse extending from costal interval 4 to 5, and a subquadrate yellow spot in the apical 4/5 extending from costal interval 1 to 2.

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 very sparsely punctate; ratio of interocular width/width of head approximately 0.67; antennal club slightly 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; punctation of pronotum distinct between lateral impressions, extremely shallow and sparse only in very middle, punctures becoming gradually larger laterally; sparse erect setae present near anterior angles and along lateral margin; anterior angles acute and strongly produced; posterior angles obtuse; sides of pronotum 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 interstice 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 disappearing close to posterior elytral margin; vague secondary striae also present in very anterior part of interstice 2 (slightly longer than scutellum) and anterior 1/3 of interstice 3; elytral surface with sparse micropunctation; humeral umbone and apical protuberance 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); one additional large spiniform seta present near apico-sutural angle; posterior margin evenly rounded.

Propygidium with dense fringe of white setae along posterior margin, covering approximately 1/2 of propygidial length.

Pygidium very 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 small spots of white setae near base; 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, somewhat rounded; bulbiform in ventral view.

Abdominal ventrites with dense transverse band of 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. Mesofemur 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, rather long, approximately 3.9 times longer than wide; proximal tooth short, situated close to the rather short, weakly curved apical tooth; inner spur short, positioned at level of space between proximal and apical 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, curved, 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 5A,G,M .

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 mesotarsus shorter, two apical branches more equal than in males; antennal club as long as antennomeres 2–6 combined.

Measurements. Total body length 10.3–11.8 mm (HT 11.6 mm), total body width 5.6–6.6 mm (HT 6.4 mm).

Morphological variation. Elytral yellow spots vary slightly in shape and size. Number of elytral spiniform setae near apico-sutural angle varies between two and five. Shape of parameres very constant.

Differential diagnosis. Glenopopillia forceps sp. nov. is most similar to G. maculata Lin, 1980 and G. nagaii ( Sabatinelli, 1997) . It differs from these species in the following characters: protibia more slender in males; yellow lateral spot of elytron divided; secondary stria on interstice 2 present only anteriorly; abdominal ventrites with distinct irregular white setae on each side of the anterior half of ventrites 2–4. Moreover, in G. forceps sp. nov. the aedeagus is rather short with asymmetric parameres ( Figs 5A,G,M ).

Etymology. The specific epithet refers to the forceps-like shape of the parameres of the new species (noun in nominative case, standing in apposition).

Distribution. India (Meghalaya, Garo Hills).

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.