Scirtes flavocinctus Champion, 1918

Yoshitomi, Hiroyuki & Ruta, Rafał, 2010, Revision of the Scirtes flavoguttatus species-group (Coleoptera: Scirtidae: Scirtinae) 2467, Zootaxa 2467 (1), pp. 1-74 : 36

Scirtes flavocinctus Champion, 1918

Figs. 13H , 21

Scirtes flavocinctus Champion, 1918: 219 .

Type material. Syntypes ( BMNH) : 1 male, “Quop, W. Sarawak. G. E. Bryant. III. 1914 ”, “ ♂ ”, “Type H. T.”, “ Scirtes flavocinctus Ch ”, “1916.96” ; 1 female, “Quop, W. Sarawak. G. E. Bryant. 27. II. 14.”, “HG6.”, “┌┬┐”, “ ♀ ”, “ Scirtes flavocinctus Ch ”, “1916.96”. Judging from the original description, it was cleared that the syntypes consisted of two specimens collected from the same locality, therefore we considered that there is unnecessary to designate the lectotype in this case .

Additional material examined. 1 male ( BMNH), “Quop, W. Sarawak. III-IV. 1914. G. E. Bryant. ”, “G. Bryant Coll. 1919-147” ; 1 ex. ( BMNH), “Quop, W. Sarawak. G. E. Bryant. III. 1914 ”, “ G. Bryant Coll. 1919- 147”, “ Scirtes flavocinctus Champ cotype”, “missing ix. 1975 ” [only pin and labels]; 1 male ( ITBC), “Rindon, Lanjak Enti-mau wildlife Sanct., Kapit, Sarawak 18. VI. 2008 H. Takizawa leg.”; 1 male ( ITBC), “ Sg. Begua, Lanjak Entimau, wildlife Rec. Kapit. Sarawak 23. VI. 2008 H. Takizawa leg.” .

Redescription. Male. Body oval, convex above, shining, closely covered with fine setae throughout. Coloration of head, antennomeres 1–3, scutellum, legs and abdomen yellowish-brown; tarsal segments 1–3 fuscous in fore- and middle legs; maxillary palpi, antennomeres 4–11 and elytra black; tip of terminal segments of antennae and elytral maculations pale yellow; anterior transverse elytral band running along proximal 1/2 of outer margins, anterior margins and near scutellum; middle transverse not reaching elytral suture, gently tapered laterally; posterior spots large and oval, located near apex, touching each other.

Head moderate in size, almost flat in dorsal surface, finely punctate; clypeus wide, expanded antero-laterally, slightly concave in front margin. Eyes moderate in size, gently prominent; the distance between the eyes ca. 2.4 times as long as the maximum diameter of the eye. Antennae moderate in length, reaching ca. proximal 1/4 of elytra; antennomeres rather flat; approximate ratio of each antennomeres as 1.3: 1.0: 1.0: 1.8: 1.5: 1.5: 1.5: 1.5: 1.5: 1.5: 2.0. Pronotum transverse, convex dorsally in mesal part of disk, closely punctate; front margin almost straight; antero-lateral angles obtuse, projecting anteriorly; lateral and posterior margins gently arcuate, gently tapered anteriad; postero-lateral corners right-angled; PW/PL 2.35. Scutellum moderate in size, equilateral-triangular, finely punctate. Elytra oblong-oval, widest at middle, thickest in proximal 1/3, punctured as on pronotum; humeri indistinct; EL/EW 1.19; EL/PL 4.20; EW/PW 1.50; TL/EW 1.48. Hind coxal plates subquadrate. Legs stout, rather short. Hind legs stout; dorsal tibial spurs laterally curved in apical portions, 2.2 times as long as ventral spurs; tarsomere 1 long, clearly longer than dorsal tibial spurs and the total length of remaining tarsomeres. Tergites I–VII lacking apodemes; sternites III–IV sparsely covered with short setae; sternites V–VII covered closely with long setae; caudal margin of sternite VII widely and shallowly concave. Tergite VIII moderately sclerotized, trapezoidal, bearing long spines on apical margin, covered sparsely with minute seate in postero-lateral portion; sternite VIII indistinct; tergite IX almost membranous, but apodemes lightly sclerotized, bearing short spines along apical margin; sternite IX lightly sclerotized, composed of two oval plates, bearing short setae in apical part. Tegmen large, well sclerotized; basal part semicircular, sides subparallel; parameres long and slender, slightly curved interiorly, punctate, pointed at apices. Penis large, well sclerotized, symmetrical, connected with tegmen in middle part; basal part lobed, expanded laterally in proximal part and apical 1/3; posterior part (parameroids?) simple, lobed, a little shorter than parameres of tegmen.

Female. Sexual dimorphism slight. PW/PL 2.65; EL/EW 1.31; EL/PL 4.78; EW/PW 1.38; TL/EW 1.58.

Measurements. Male (n = 1): TL 4.58 mm; PW 2.07 mm; PL 0.88 mm; EL 3.70 mm; EW 3.10 mm. Female (n = 1): TL 3.93 mm; PW 1.80 mm; PL 0.68 mm; EL 3.25 mm; EW 2.48 mm.

Distribution. Borneo Isl. ( Sarawak).

Notes. The species is distinct in having a broad transverse band in the middle of the elytra, a large posterior spot on the elytra, parameres long, slightly longer than penis.

Figures

FIGURE 13. Habitus of Scirtes spp. A) S. kodadai sp. n., B) S. tanahratensis sp. n., C) S. malaccanus sp. n., D) S. malcolmi sp. n, E) S. basifasciatus Pic, holotype, F) S. curtelineatus Pic, syntype, G) S. philippinensis sp. n., holotype, H) S. flavocinctus Champion, syntype, I) S. bidentatus sp. n., holotype.

FIGURE 21. Scirtes flavocinctus Champion, syntype, male. A) sternite I–VII, B) tergite VIII, C) tergite IX, D) sternite IX, E) tegmen and penis in ventral aspect. Abbreviations: p, penis; t, tegmen.