Dermestocyphon (Himacyphon) optatus ( Klausnitzer, 1980 ) 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 : 279

Dermestocyphon (Himacyphon) optatus ( Klausnitzer, 1980) , comb. nov.

( Figs 14–15 , 21–23 , 28, 35–37, 103–110)

Cyphon optatus KLAUSNITZER, 1980: 203 .

Cyphon (Oreocyphon) optatus: KLAUSNITZER (2008: 87) .

Material examined. NEPAL: 7 ♂♂ ( KUMJ, EUM, NMW), “(E. NEPAL) Basantapur (2300m) 27°07’N, 87°24’E May 4, 1972 Malaise Trap (2) Kyushu Univ. Col.” ; 4 ♂♂, ditto, but May 8, 1972 ; 3 ♂♂, ditto, but May 7, 1972 ; 2 ♂♂, 1 ♀, ditto, but May 9, 1972 ; 21 ♂♂, ditto, but May 6, 1972, 1 ♂ genitalia on slide no. HY 786 ; 4 ♂♂, ditto, but May 5, 1972 ; 1 ♂, ditto, but May 2, 1972 ; 3 ♂♂, ditto, but May 3, 1972, 1 ♂ genitalia on slide no. HY 748 ; 1 ♂ ( CKD), “ Karnali / Humla, 6 km NW Simikot, Dandaphaya ( Dharapuri ), 30°00’09’’ N, 81°46’08’’ E, 2300 m, 18.06.2001, leg. A.Weigel ” ; 1♂ ( CKD), “ Koshi, Mutidhunga-Chitre , 2200–2400 m, 28.05.1985, leg. M. Brancucci ” ; 1 ♂ ( CKD), “ Koshi, Basantapur , 2300 m, 30.05.– 02.06.1985, leg. M. Brancucci ” ; 1 ♂ ( CKD), “ Langtang, Rain Forest , 2300–2800 m, 05.–06.1990, leg. S. Bilý ” ; 1 ♂ ( CKD), “ Gandaki, Kopchepani, 1500–1700 m, 15.05.1984, leg. C. R. Rai ”. 1 ♂ ( ZMHB) “ Nepal: Umg. Jalkini (15 km n. Kathmandu ), 1700m, 7 IV 1991, Erber” . INDIA: SIKKIM: 3 ♂♂ ( BMNH), “ Sikkim: Singhik. / 3,500 ft. 23.iv.1924. / Maj. R.W.G. Hingston ”, “Everest Exp. / Brit. Mus. / 1924-386.” UTTARAKHAND: ( CKD), 4 ♂♂, “Ranikhet, leg. Ch. J. Rai ” ; 2 ♂♂, “ Almora , leg. Ch. J. Rai ” ; 1 ♂, “ Bhatkot , leg. Ch. J. Rai ” ; 1 ♂ ( BMNH), “ West Bhatkot, Kumaon, 4000’, May ’20, HGC.”, “ H. G. Champion Coll., B.M. 1953-156” ; 1 ♂ ( BMNH), “W Almora Divu, Kumaon U. P., Apr, 1918, HGC.”, “H. G. Champion Coll., B. M. 1953-156”. WEST BENGAL: ( NMB, NME, CKD), 4 ♂♂, “ Suntuk, 900 m, 14.05.1986, leg. Ch. J. Rai ”; 1 ♂, “ Yok Forest, 2000 m, 06.05.1986, leg. Ch. J. Rai ”; 1♂, “ Shukubarry, 1000 m, 11.04.1986, leg. Ch.J. Rai ”; 1♂, “ Kurseong, Thingay, Bari , 800 m, 15.04.1991, leg. N. Dangal ”; 2 ♂♂, “ Kalimpong, Dumra Busty , 1000 m, 29.03.1991, leg. N. Dangal ”; 2 ♀♀ ( BMNH, CKD). “ INDIA: Darjeeling D., Shukubarry, 1000 m ( KPG), 11.04.1986, leg. Ch. J. Rai. ” ARUNACHAL PRADESH: 1 ♂ ( CKD), “ Dirang vicinity, 27°21’23’’ N, 92°13’16’’ E, 1550± 150 m, 01.– 09.06.2004, leg. L. Dembický ” .

Description of female. Elytra with a pair of round depressions (diameter 0.10 mm) near scutellum, with fungiform outgrowth in middle ( Fig. 15 ). Sternite VII triangular (L 0.42–0.43 mm; W 0.87 –0.98 mm), caudal margin straight, with membranous flap ( Figs 35, 36 ). Tergite VII (L 0.47–0.50 mm, W 0.55 –0.57 mm) with concave structure at mesal portion of apical margin ( Fig. 37 ). Tergite VIII with rectangular plate (L 0.30–0.32 mm, W 0.22 –0.27 mm) with fine hairs at margin, and long apodemes (L 0.85–0.93 mm) ( Fig. 108 ). Sternite VIII (L 0.55–0.58 mm, W 0.26 –0.28 mm) with long diverging plate, distal margin rounded on both sides, with a group of fine hairs ( Fig. 107 ). Ovipositor relatively long; proctiger membranous; lateral processes elongate, with two tufts of setae ( Fig. 109 ); coxite (L 0.28–0.30 mm). Distal bursellar sclerites not discernible. Proximal bursellar sclerite (L 0.14–0.16 mm; W 0.20 –0.21 mm) with one tooth at proximal margin (L 0.07 mm), and two teeth at distal margin with (L 0.03 mm) ( Fig. 110 ).

Distribution. Nepal, India.

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 18–26. Mouthparts of Dermestocyphon (males); 18, 21, 24 – mandible; 19, 22, 25 – maxilla; 20, 23, 26 – labium: 18–20 – D. drianti (Pic, 1918); 21–23 – D. optatus (Klausnitzer, 1980); 24–26 – D. niisatoi sp. nov.

Figs 30–37. Last visible sternite (30, 32, 35), membranous flap (33, 36) and tergite VII (31, 34, 37) of female: 30–31 – D. suturalis sp. nov.; 32–34 – D. honorus (Klausnitzer, 1980); 35–37 – D. optatus (Klausnitzer, 1980).

Figs 107–110.Dermestocyphon (Himacyphon) optatus (Klausnitzer, 1980), female:107 – sternite VIII; 108 – tergite VIII; 109 – ovipositor; 110 – bursal sclerite. Scale bar = 0.5 mm (107–108).