Glenopopillia klossi ( Ohaus, 1926 ) Lu & Zorn & Král & Bai & Yang, 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 : 307-309

Glenopopillia klossi ( Ohaus, 1926) , comb. nov.

( Figs 7 A–I)

Spilota klossi Ohaus, 1926: 238 , Fig. 12 (original description).

Callistethus klossi: MACHATSCHKE (1957) : 96 (catalogue), MACHATSCHKE (1972): 171 (catalogue); SABATINELLI (1997): 249, Figs 1–2 ; KRAJČÍK (2007): 60 (catalogue).

Anomala klossi: KRAJČÍK (2012) : 23 (catalogue).

Type locality. ‘ Selangor, Bukit Kutu, 3000–3460 F’ [ Malaysia, Selangor State, Bukit Kutu mt., ca. 3°32.6’N, 101°43.2’E]’.

Type material studied (1 spec.). LECTOTYPE: ♂ (present designation, ZMHB), ‘ Bukit Kutu | Selangor | April 1915 [p] | 3000–3460 [hw] || Zool. Mus. | Berlin [p] || Spilota | klossi | Type Ohs. [red] [hw]’.

Additional material studied (8 spec.). MALAYSIA: PERAK: 1 ♀ ( CZPC), W. Perak, 30 km SE of Ipoh, Cameron Highlands, Ringlet, 900 m, 25.iv. –5.v.2001, P. Čechovský lgt.; 1 ♂ 2 ♀♀ ( MSPC), Malaysia, Cameron Highlands. MYANMAR: TANINTHARYI REGION: 2 ♂♂ ( CZPC), Tenasserim, 20.iv.1995; 2 ♂♂ 1 ♀ ( CZPC), Tenasserim, 23.iv.1996, local collectors.

Redescription of lectotype (♂). Body shape. Elongate ovoid, weakly convex.

Color. Ground color blackish-brown with strong green metallic luster; all legs except tarsi dark orange; all tarsi, proximal half of femur, and apical part of meso- and metatibia dark brown with green metallic luster; 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; three interconnected yellow spots forming an oblique transverse band just posteriorly to middle of elytron; inner spot larger and subquadrate, spanning costal interval 1 to 2, middle spot rather small, spanning interstice 2 and costal interval 3, outer spot extending from interstice 3 to costal interval 5. Head. Clypeus subrectangular, disc very densely, transversely, confluently punctate; anterior corners rounded; anterior margin weakly reflexed; frons very shallowly impressed medially, densely punctate, medial impression sparsely punctate; vertex very sparsely punctate; ratio of interocular width/ width of head approximately 0.61; antennal club longer than antennomeres 2–6 combined.

Pronotum approximately 1.4 times wider than long, with small impression on each side; disc extremely finely and sparsely punctate, 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 very 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 3 on each side; all other marginal lines complete.

Scutellum nearly semicircular, longer than wide, finely and sparsely punctate.

Elytra regularly striate; two inner costal intervals (1 and 2) slightly convex, all other costal intervals and interstices almost flat; strial punctures distinct; subsutural interstice with a secondary stria being irregularly doubled anteriorly and disappearing in posterior third; vague secondary striae also present in anterior half of interstices 2 and 3; elytral surface with sparse micropunctation; humeral umbone and apical protuberance prominent; opaque area at apical curvature very narrow, laterally ending at apical protuberance; lateral margin with moderately wide flat paramarginal extension between humerus and middle of elytron; epipleuron broad near humerus, ending slightly posteriorly of elytral midlength; epipleuron with several short white setae near humerus and rigid but rather short spiniform black setae beginning posteriorly of humerus and extending along lateral margin to apical curvature (becoming gradually larger apicad), apico-sutural angle without setae; posterior margin evenly rounded.

Propygidium glabrous. Pygidium strongly convex; apex broadly rounded; punctation dense, transverse; 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 subcircular; bulbiform in ventral view.

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

Legs. Meso- and metafemur with several irregular bands of long white setae. Protibia bidentate, broadened, approximately 4.0 times longer than wide; proximal tooth short, situated close to the rather short, curved apical tooth; inner spur short, at level of space between proximal and apical tooth. Metatibia strongly fusiform; protarsus slightly thickened; protarsomere 5 (without claws) 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 as long as mesotarsomere 5, 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 7 F–H.

Female. Protibia slender, apical tooth of protibia long and spatulate; protarsus articulated slightly basally of level of proximal tooth; inner spur long, positioned 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 10.8–12.5 mm (LT 11.3 mm), total body width 5.2–7.4 mm (LT 6.2 mm).

Morphological variability. Elytral spots vary slightly in shape and size, the preapical transversal band sometimes divided into two spots. Color of legs variable, in some specimens all legs dark brown with green metallic luster. Secondary stria on subsutural interstice sometimes only present in anterior half of elytra, sometimes almost reaching the posterior margin. Shape of parameres very constant.

Differential diagnosis. This species is peculiar and differs from all other species of this genus by the following characters: pronotum more or less even, with only one small impression on each side; apico-sutural angle of elytron without spiniform setae, setae along lateral margin less strong and shorter compared to all other species except G. albopilosa sp. nov. with short soft setae; propygidium without long white setae at posterior margin; pygidium smooth, without white long setae; modified claws of proand mesotarsi of males more robust, the upper branch extremely small. Moreover, the general shape of the aedeagus differs significantly from the shape found in all other species: The parameres are very elongated, without a subapical tooth as found most other species, and the ventral plate has a long extension reaching the apical curvature of the parameres ( Figs 7 F–H).

Distribution. Malaysia (Perak, Selangor) ( OHAUS 1926). First country record from Myanmar (Tanintharyi Region).

Remarks. Because OHAUS (1926) did not state how many syntypes were included in the original description of this species, and it is not entirely certain that the type series was monospecific; therefore, a lectotype was designated by us.

Figures

Fig 7. Glenopopillia klossi (Ohaus, 1926). A–I – lectotype; J – specimen from Myanmar, Tenasserim.A–C – habitus: A – dorsal view, B – ventral view, C – left lateral view; D – propygidium and pygidium; E – head and pronotum: F–H – aedeagus, F – dorsal view, G – ventral view, H – right lateral view; I – label; J – lateral margin of elytra. Sc 1: Scale for A–C = 5 mm; Sc 2: Scale for F–H = 1 mm.

Fig. 1. Glenopopillia rufipennis rufipennis Lin, 1980, left elytron. 1–6 – numbered costal intervals, I–V – numbered interstices.

Fig. 2. Glenopopillia albopilosa sp. nov., holotype. A–C – habitus: A – dorsal view, B – ventral view, C – right lateral view; D – propygidium and pygidium; E – head and pronotum; F–H – aedeagus: F – dorsal view, G – ventral view, H – right lateral view; I – lateral margin of elytra. Sc. 1: scale for A–C = 5 mm; Sc. 2: scale for F–H = 1 mm.