Dermestocyphon (Oreocyphon) thailandicus, Ruta & Yoshitomi & Klausnitzer, 2013

Ruta, Rafał, Yoshitomi, Hiroyuki & Klausnitzer, Bernhard, 2013, Review of the genus Dermestocyphon (Coleoptera: Scirtidae: Scirtinae), Acta Entomologica Musei Nationalis Pragae 53 (1), pp. 253-285 : 275-276

Dermestocyphon (Oreocyphon) thailandicus sp. nov.

( Figs 12 , 91–95 )

Type material. HOLOTYPE: ♂ ( NMB), “ THAI 2-3/6 1995, 18.49 N 98.54E, DOI PUI 1400 m, Vit Kubáň leg.”.

Diagnosis. This species is similar to D. niisatoi sp. nov., but the elytra are sparsely punctate – distance between punctures ca. 0.5 of their diameter (in D. niisatoi sp. nov. 0.3 of their diameter) and it differs in the morphology of penis (sides of trigonium subparallel in D. thailandicus and subtriangular in D. niisatoi sp. nov.).

Description. Male. Body oval, slightly convex dorsally, strongly shining, closely covered with easily removable setae throughout. Head and pronotum orange, elytra and scutellum black; mouthparts and antennae yellowish, protibiae yellowish brown, middle and hind tibiae brownish, femora somewhat darker.

Head moderate in size, finely punctate, slightly convex dorsally; distance between eyes about 2.0 times as long as maximum diameter of eye. Eyes moderate in size, slightly prominent. Pronotum transverse, somewhat depressed in lateral parts, finely punctate (punctures similar to those on head); anterior margin almost straight; anterolateral angles obtuse, slightly projecting anteriorly; lateral and posterior margins almost straight; posterolateral angles about 90°; PW/PL 2.19. Scutellum small, equilateral-triangular, finely punctate. Elytra oval, widest at middle, closely punctate (punctures separated by ca. 0.7–1.0 of their diameter), gently arcuate at lateral margins; shoulder parts slightly elevated; EL/EW 1.27; EL/PL 4.81; EW/PW 1.73; TL/EW 1.53. Legs relatively short.

Caudal margin of sternite VII arcuate. Sternite IX (L 0.19 mm, W 0.25 mm) moderately sclerotized, square, with concave basal portion, bearing long setae in apical portion; tergite VIII (L 0.31 mm, W 0.35 mm) moderately sclerotized, transversely trapezoidal, bearing short setae at mesal portion of posterior margin, this part is more curved, and short setae in posterolateral portions, with a pair of short apodemes; tergite IX (L 0.37 mm, W 0.28 mm) slightly sclerotized, with a pair of long apodemes. Tegmen (L 0.19 mm, W 0.14 mm) short, slightly sclerotized; parameres short, with broad rounded apices; lateral projections long (L 0.42 mm), pointed at apices. Penis (L 0.44 mm, W 0.15 mm) moderately sclerotized, widest at basal portion; pala oval, shallowly concave at basal margin; parameroids long, slender, slightly widening apically, closely punctate; trigonium relatively long, subparallel-sided, apex emarginated, covered with few very short microtrichia.

Female. Unknown.

Measurements. Male (n = 1): TL 3.08 mm; PW 1.16 mm; PL 0.53 mm; EW 2.01 mm; EL 2.55 mm.

Etymology. This species is named after its terra typica.

Distribution. Thailand.

Figures

Figs 7–17. Habitus of Dermestocyphon (Oreocyphon) (7–13) and Dermestocyphon (Himacyphon subgen. nov.) (14-17): 7 – D. brancuccii sp. nov., holotype; 8 – D. honorus (Klausnitzer, 1980), male; 9 – ditto, female; 10 – ditto, apex of elytra; 11 – D. niisatoi sp. nov., paratype; 12 – D. thailandicus sp. nov., holotype, male; 13 – D. umbratilis, (Klausnitzer, 1976), female; 14 – D. optatus (Klausnitzer, 1980), male; 15 – ditto, female; 16 – D. sp., female; 17 – ditto, frontal view. Scale bars = 1.0 mm (7–9, 11–16).

Figs 91–95. Dermestocyphon (Oreocyphon) thailandicus sp. nov., holotype, male: 91 – sternite IX; 92 – tergite VIII; 93 – tergite IX; 94 – tegmen with lateral projections; 95 – penis. Scale bar = 0.5 mm.