Parastenostola nigroantennata Lin et Yang

Lin, Meiying, Li, Wenzhu & Yang, Xingke, 2008, Taxonomic review of three saperdine genera, Mandibularia Pic, Mimocagosima Breuning and Parastenostola Breuning (Coleoptera: Cerambycidae: Lamiinae: Saperdini), Zootaxa 1773, pp. 1-17 : 12-13

Parastenostola nigroantennata Lin et Yang , sp. nov.

( Figs. 24–29 )

Description. Male: length: 14.0– 14.5 mm, humeral width: 4.0– 4.3 mm. Female: length: 14.0– 17.8 mm, humeral width: 4.0– 5.2 mm. Body black; frons densely closed with yellow pubescence, eyes circled with yellow pubescence, occiput black; antennae pitchy with thick gray pubescence; pronotum with a moderate black macula not reaching basal margin on disc, with yellow pubescence at sides except for a small black spot on middle of each side; scutellum and elytra black with dense gray short pubescence, giving a black-gray appearance; ventral surface clothed with yellow pubescence at sides and with gray pubescence along middle of venter; pubescence on mesepisternum not so thick, gray, sometimes mixed with yellow. Head fine and unevenly punctured. Lower eyelobes much longer (male) or slightly longer (male) than genae. Antennae not stout, longer (male) or slightly shorter (female) than body length; antennomere ratio: male: 16 4 25 21 16 15 14 13 12 11 13; female: 14 3 21 19 16 12 11 10 9 9 10. Punctures on pronotum irregular and uneven. Scutellum linguaform. Elytra evenly narrowed posteriorly, rounded or slightly truncated apically, densely punctured, punctures smaller than their interspaces. Legs moderately stout, middle tibiae with lots of hairs externally, hind femur reaching middle to apex of third abdominal segment. Male genitalia ( Fig. 27 ): Tegmen about 3.4 mm; lateral lobes short, each about 0.5 mm long and 0.12 mm wide, with setae at the apex and around of dorsal surface, with two small lobes furnished with short and fine hairs at the ventral base; roof very short; ringed part elbowed in the widest portion, converging; basal piece slightly bifurcated distally; median lobe with median struts slightly curved, a little longer than tegmen (20:17); the former distinctly shorter than the latter, less than 1/2 of median struts; dorsal plate subequal to ventral plate; the ventral edge of median orifice weakly projected; median foramen extremely elongated; internal sac moderately long, with four long and thin rods and a small crescent armature at the basal of rods, the hair-like rods about 5.0 mm, much longer than tegmen or median lobes. Ejaculatory duct single. Female genitalia ( Figs. 28–29 ): Setae of sternite 7–8 long, extending beyond apex. Spermatheca distinctly curved, dividing into 5–8 different parts, about 2.2 mm long for a 17 mm adult. Tignum short, shorter than 1/3 of abdomen. The tignum 1.9 mm for an adult with a 7.0 mm abdomen in ventral view.

Diagnosis. Differs from P. brunnips (Gahan) in the black antennae, femera and tibiae.

Etymology. This species differs from P. brunnips (Gahan) by the black antennae.

Type specimens examined. Holotype: male, Guangxi, Tianlin county, Langping Xiang, 1200–1400 m, 2002. V.29, coll. Jianwen Liu ( IZAS). Paratypes: 1 male, Guangxi, Tianlin county, Jiudongping, 1200–1300 m, 2002. V.27, coll. Xiujuan Yang (HBU); 1 female, Guangxi, Tianlin county, Yaojiawan, 1200–1400 m, 2002. VI.3, coll. Xiujuan Yang (HBU); 1 male 1 female, Guangxi, Wuming county, 2005. VI.20–30, coll. Chenghui Zhan ( IZAS); 1 female, Guangxi, NNW 100k of Nanning, Mt. Damingshan, 2005.VI ( CWIC); 1 female, Guizhou, Guiyang Forest Park, 2007. V.9, leg. Meng Yuan & Long Zhang ( IZAS).

Distribution. China: Guangxi, Guizhou.

Figures

FIGURES 24 – 26. Parastenostola nigroantennata Lin et Yang sp. nov. 24. male, paratype, from Guangxi. a. dorsal view. c. ventral view. 25 – 26. female, paratypes, from Guangxi. 25. dorsal view. 26. lateral view.

FIGURES 27 – 29. Genitalia of Parastenostola nigroantennata Lin et Yang sp. nov. 27. male genitalia. a. dorsal view. b. lateral view. c. ventral view. R. rods of endophallus. 28 – 29. female genitalia, background green. 28. dorsal view. 29. spermatheca