Parallelodemas vicinum Faust

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 : 113-114

Taxon classification Animalia Coleoptera Curculionidae

Parallelodemas vicinum Faust

Parallelodemas vicina [sic] Faust 1894: 308. Lectoype male, designated here, labeled "Carin Cheba/ 900-1100 m/ L. Fea V XII-88", " vicina / Faust", " Parallelodemas / vicina / sp. n.", " Parallelodemas / vicina / ♂ sp. n.", "SYNTYPUS/ Parallelodemas / vicina / Faust, 1894", "Museo Civico/ di Genova", "Lectotype/ Parallelodemas vicinum / Faust (Prena & Zhang/ design. 2014)" (MSNG). Paralectotypes 9: Carin Cheba, Carin Ghecu and Teinzó, Myanmar (MSNG 4, SFFM 2, SNSD 3). Lyal and King (1996), elytro-tergal stridulation.

Diagnosis.

A generally useful character for recognizing Parallelodemas vicinum is the presence of imbricate squamiform setae on the distal half of the metepisternum. Parallelodemas docile has similar vestiture on the distal two thirds and an enlarged third tarsite. Small Parallelodemas vicinum with more widely spaced setae on the metepisternum differ from the otherwise very similar Parallelodemas perfectum by the apically truncate aedeagus and less curved female rostrum. These two and Parallelodemas feae , a species with ventrally hirsute femora, are the only known species with undivided setae, flush eyes and clavate setae on the male mesotarsus.

Redescription.

Length 6.4-7.8 mm, width 1.6-2.2 mm; integument black, teneral specimens with ventrites and legs partially dark rufous; ventral side with undivided setae, basic vestiture inconspicuous on pronotum and elytron, imbricate white squamiform setae at base of elytral interstria 3, postmedially on interstriae 3 and 4, on dorsal apex of mesepimeron, distal half of metepisternum, flank of prosternum, ventral face of pro- and mesofemora, dorsal face of metafemur and occasionally on basolateral angles of pronotum; eyes flush with head contour; frons and base of rostrum glabrous; male rostrum 1.06 –1.15× as long as pronotum, ventrally without setae, prorostrum 0.36 –0.38× rostral length and spatulate in dorsal view, epistome very slightly notched, antennal scape with long, cupreous setae, club 1.6 × as long as wide; female rostrum 1.14 –1.24× as long as pronotum, prorostrum 0.57 –0.58× rostral length; prosternum gradually sloping in front of coxa, basal lobe notched; pro- and mesofemora ventrally with slender (male) or squamiform (female) setae; tarsus with tarsite 3 relatively small and excised to basal third, tarsite 5 as long as 2+3 and distinctly protruding beyond anterior margin of 3, male mesotarsus with moderately long, clavate, outward directed setae; penis 2.5 × as long as wide, apex bottle-shaped (Fig. 9), internal sac with thick, tubular, basally curved sclerite; spermatheca with nodulus long and usually perpendicular to collum, ramus similarly long (as Fig. 27).

Distribution.

The species is known from China (Yunnan), India and Myanmar.

Material examined.

CHINA. Yunnan: Xishuangbanna Pref., Anma Xinzhai, 26.iv.2009 [#1941164], Meng (IZCAS 1); Xishuangbanna Pref., Menglun, Highway G213, 21.xi.2009 [#1500895-96]; 22.xi.2009 [#1500894], Tang Guo & Yao Zhiyuan (IZCAS 3); Xishuangbanna Pref., Menglun, 12.iv.1994 [#1500897], Chen Xiaolin (IZCAS 1); Xishuangbanna Pref., Meng’a, 6.vi.1958 [#1799544-45], Wang Shuyong (IZCAS 2); Cangyuan County, Banlao township, Dongnanhai, 2.v.2011 [#1941163], Huang Xinlei (IZCAS 1). INDIA. Sikkim: Gopaldhara, Rungbong Valley, H. Stevens (BMNH 3). West Bengal: Namsu River, 21.vi.1918, H. Stevens (BMNH 1); Nurbong [Estate], 1910s, W. K. Webb (BMNH 1). MYANMAR. Kachin: Teinthaw, V/1886, L. Fea (MSNG 1). Kayah: Carin Ghecú [between Taó and Chialá, II–IV /1888] (MSNG 1). Kayin: Karen Hills [ca. 25-35 km NE of Taungoo], V/1888, L. Fea (MSNG 3, SFFM 2, SNSD 3).