Parallelodemas impar Voss

Prena, Jens & Zhang, Runzhi, 2014, A taxonomic revision of Parallelodemas Faust from South China (Coleoptera, Curculionidae, Baridinae), with notes on sexually dimorphic characters, Deutsche Entomologische Zeitschrift 61 (2), pp. 105-119 : 111-112

Parallelodemas impar Voss

Parallelodemas impar Voss 1941: 895. Holotype female, Tienmushan, China (NKMB). Paratype retained by Voss not traceable and probably destroyed (see Weidner 1979: 400).

Diagnosis.

The ventrally hirsute male rostrum separates Parallelodemas impar from all other Chinese species with simple, undivided setae. Another good character is the absence of wide setae on elytron and metepisternum.

Redescription.

Length 4.4-5.8 mm, width 1.0-1.5 mm; integument dark brown, antenna, tarsus and apex of female rostrum light brown; vestiture consisting of inconspicuous, evenly distributed, simple, cupreous setae; eyes slightly bulging; frons and base of rostrum with recumbent setae; male rostrum 0.98 –1.07× as long as pronotum, ventrally with long setae, prorostrum 0.28 –0.30× rostral length and spatulate in dorsal view, epistome deeply notched, antennal scape ventrally with long, cupreous setae, club 2.0 × as long as wide; female rostrum 1.13 –1.16× as long as pronotum, prorostrum 0.48 –0.49× rostral length; prosternum gradually sloping in front of coxa, basal lobe notched; all femora hirsute ventrally; tarsus with tarsite 3 relatively small and excised to basal third, tarsite 5 as long as 1 and moderately protruding beyond anterior margin of 3, male mesotarsus with long, clavate, outward directed setae; penis 3.0 × as long as wide, apex with narrowly rounded, subtriangular projection (Fig. 17), internal sac with thick, tubular, basally curved sclerite; spermatheca with nodulus long and perpendicular to long axis of collum, ramus obsolete (Fig. 26).

Distribution.

The species is known from China (Sichuan, Yunnan, Zhejiang) and Laos. The record from Guatun in Fujian, by Voss (1956), applies to Parallelodemas setifrons .

Material examined.

CHINA. Sichuan: Wushan County, Liziping, 2.vii.1993 [#1941174] (IZCAS 1). Yunnan: Xishuangbanna Prefecture, Menghun, 17.v.1958 [#1500892], Meng Xuwu (IZCAS 1). Zhejiang: West Lin’an, Mount Tianmu, 15.6.1957 [#1799534], 28.6.1957 [#1500891, #1500893, #1799531] (IZCAS 4), 9.vi.2012 (ZAFU 1); Kaishanlaodian, Mount Tianmu, 23.vi.1998 [#1941175-76] (IZCAS 2); Mount Tianmu (NHMB 1). LAOS. Luang Prabang: Ban Kiukacham env., 19.vi.2009, M. Geiser & D. Hauck (NHMB 5). Xieng Khouang: Phonsavan to Phu Padaeng, 30/31.v.2009, M. Geiser (NHMB 2).