Scirtes satoi Yoshitomi & Ruta, 2010

Yoshitomi, Hiroyuki & Ruta, Rafał, 2010, Revision of the Scirtes flavoguttatus species-group (Coleoptera: Scirtidae: Scirtinae) 2467, Zootaxa 2467 (1), pp. 1-74 : 46-47

Scirtes satoi Yoshitomi & Ruta , sp. n.

Figs. 23G , 28

Type material. Holotype ( EUM): 1 male, “ Gunon Bringchang Malaysia 21. VII. 1987 M. Satô leg.”, genit. s. no. HY 925 . Paratype ( NMW): 1 male, “ Cameron Highlands Malaysia 3–VIII–1978 K. Sugiyama leg.”

Description. Male. Body oval, slightly convex above, shining, covered sparsely with fine setae. Coloration of body almost yellowish-brown; antennomeres 5–11 and tarsi infuscous; hind legs reddish brown; elytral maculation black, situated in apical half, not reaching elytral suture and apex.

Head moderate in size, slightly convex above on dorsal surface, finely punctate; clypeus long and wide, expanded laterally, front margin almost straight. Eyes moderate in size, prominent; the distance between the eyes ca. 2.3 times as long as the maximum diameter of an eye. Antennae slender, reaching ca. proximal 1/5 of elytra; approximate ratio of each antennomeres (n = 1) as 1.5: 1.0: 1.3: 1.7: 1.8: 1.7: 1.7: 1.7: 1.7: 1.5: 2.2. Pronotum slightly convex above in mesal part of the disc, punctured as on head; antero-lateral angles ca. 120º, projecting anteriorly; front margin almost straight; lateral margins gently arcuate; postero-lateral angles right-angled; posterior margin slightly bisinuate; PW/PL 2.20–2.28 (2.24). Scutellum relatively small, equilateral-triangular, punctured as on head. Elytra oblong, slightly convex above, widest at the middle; three pairs of faint costae running from base to near apices; shoulder parts elevated; EL/EW 1.42–1.49 (1.46); EL/PL 4.98; EW/PW 1.52–1.54 (1.53); TL/EW 1.71–1.79 (1.75). Legs relatively long. Hind tibial spurs short, curved laterally; dorsal spurs ca. 2.0 times as long as ventral ones, ca. 0.5 times as long as hind tarsomere 1. Sternites III–IV sparsely and evenly covered with short setae; sternites V–VII closely covered with relatively long setae; apical margin of sternite VII shallowly concave. Tergites VIII–IX damaged. Sternite IX lightly sclerotized, oval, covered closely with short setae in apical part. Tegmen large, well sclerotized; parameres very long, longer than basal portion of tegmen, straight with abruptly outcurved apices, much longer than penis. Penis small, rod-like in anterior part.

Female. Unknown.

Measurements. Male (n = 2): TL 4.90 & 5.98 mm; PW 1.80 & 2.28 mm; PL 0.82 & 1.00 mm; EL 4.08 & 4.98 mm; EW 2.73 & 3.50 mm.

Distribution. Malayan Penins.

Etymology. This species is dedicated to the late Dr. Masataka Satô.

Notes. Resembling Scirtes nigrofasciatus sp. n., but dark apical spot elongate; parameres very long, apices incurved, apical portion of penis short, much shorter than parameres.

Figures

FIGURE 23. Habitus of Scirtes spp. A) S. laosensis sp. n., paratype, male, B) S. laosensis sp. n., paratype, female, C) S. chiangmaiensis sp. n., holotype, D) S. niisatoi sp. n., paratype, male, E) S. niisatoi sp. n., paratype, female, F) ditto, excitator, G) S. satoi sp. n., holotype, male, H) S. nigrofasciatus sp. n., holotype, male, I) S. tamdaoensis sp. n., holotype, male.

FIGURE 28. Scirtes satoi sp. n., holotype, male. A) sternites V–VII, B) sternite IX, C) tegmen and penis in dorsal aspect. Abbreviations: p, penis; t, tegmen.