Tychius albolineatus Motschulsky 1860
Creators: name: Jiang, Chunyan
name: Caldara, Roberto
name: Zhang, Runzhi
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Tychius
Tychius albolineatus

description: 1. Tychius albolineatus Motschulsky, 1860
(Figures 1–4, 125–128, 243–244, 307, 364, 397, 432, 458)
Tychius albolineatus Motschulsky, 1860: 495. Korotyaev, 1996: 485. Caldara, 2013: 53.
Tychius irritans Faust, 1890: 93. Franz, 1940: 28. Caldara, 1990: 98. Korotyaev, 1996: 486.
Tychius rusticus Faust, 1890: 93. Franz, 1940: 28. Caldara, 1990: 98. Korotyaev, 1996: 486.
Tychius oberti Faust, 1890: 95. Franz, 1940: 25. Caldara, 1990: 97. Korotyaev, 1996: 486.
Tychius sibiricus Faust, 1890: 96. Franz, 1940: 28. Caldara, 1990: 98. Korotyaev, 1996: 486.
Tychius ginsuji Kôno, 1930: 145. Franz, 1940: 30. Caldara, 1990: 205. Korotyaev, 1996: 486.
Material examined. CHINA: Beijing: Badaling (700 m), 6-VIII-1962, leg Tengqiao Jiang (3); same data, leg Chunguang Wang (3); same data, 21-VI-1962, leg Tiesheng Li (1); same data, 23-VII-1964, leg Wenzhen Ma (1); same data, 24-VI-1964, leg Wenzhen Ma (4); Sanpu (600 m), 18-VIII-1960, leg Tiesheng Li (1); (same data, 17-VIII- 1964, leg Tiesheng Li (1); same data, 21-VIII-1964, leg Tengqiao Jiang (1); same data, 21-VIII-1964, leg Tiesheng Li(2); same data, 22-VII-1964, leg Wenzhen Ma (1); same data, 24-VII-1964, leg Wenzhen Ma (1); Baihuashan, Labiatae sp., 30-V-1970, Guiheng Che (1). Hebei: Xiaowutai Tatou (1200 m), 12-VIII-1964, leg Yinheng Han (1); Weixian Jinhekou (1300 m), 19-VIII-1964, leg Qinlu Chen (1); Xinglong Taqian, 3-VII-1963, leg Wenzhen Ma (1). Heilongjiang: Aihui Xigou, 18-VII-1963, leg Hongxing Li (1); same data, 20-VII-1963, leg Hongxing Li (2); same data, 22-VII-1963, leg Hongxing Li (2); Dailing, 1-VIII-1958 (3); same data, 4-VIII-1958 (1); Haerbing, 3-IX- 1944, leg Xapsuh (1); same data, 20-22-VI-1955 (1); same data, 24-VII-1963, leg Hongxing Li (1); same data, 28- VI-1942, leg Xapsuh (3); Jingpohu, 1-IX-1980 (1); Nenjiang, 24-VII-1963, leg Hongxing Li (5); Ningan Jingpohu (380m), 07-VIII-1963, leg Hongxing Li (2); same data, 8-VIII-1963, leg Hongxing Li (5). Inner Mongolia: Genhe Jinhe Dongshan (51°20’N; 121°30’E, 862 m), 18-VII-2018, leg Yizhe Li (1); Great Khingan Molidawa, 23-VII- 1970 (3); Hanma central station Observation Deck (51°26’N; 112°29’E, 828 m), 16-VII-2018, leg Yizhe Li (7); Hanma central station West checkpoint (54°25’N; 122°28’E, 819m), 10-VII-2018, leg Xu Chi (3); Xinganmeng Houqi, 17-VII-1984, leg Chengtang Zhao (1); 27-VII-1984, leg Chengtang Zhao (2). Jilin: Antu Dahuanggou, 15- VIII-1963, leg Hongxing Li (8); same data, 18-VIII-1963, leg Hongxing Li (3); Beishan, 25-VI-1963, leg Hongxing Li (1); Changchun Jingyuetan, 20-VI-1963, leg Hongxing Li (1); same data, 21-VI-1963, leg Hongxing Li (9); same data, 22-VI-1963, leg Hongxing Li (3). Liaoning: Anshan Qianshan, 09-VI-1963, leg Hongxing Li (1); Benxi, 3-VI-1963, leg Hongxing Li (2); Huangcheng Tongyuanpu, 29-V-1963, leg Hongxing Li (1); Shenyang Dongling, 25-V-1963, leg Hongxing Li (1). Shanxi: Wutaixian Hengling (1200 m), 6-VI-1964, leg Tiesheng Li (1); Wutaixian Shiju (1500 m), Caragana sinica, 8-VI-1964, leg Tiesheng Li (1); Northeast, 1960 (4).
Redescription. Length 3.30–4.15 mm (Fig. 1–4). Integument blackish except for reddish apical half of rostrum, antennae and legs; on dorsum completely covered with dense, moderately long, uniformly subelliptical scales, irregularly arranged and forming white vittae on pronotum and elytra. Rostrum (Fig. 125–128) in lateral view distinctly tapered from antennal insertion to apex, male rostrum moderately long (Rl/Rw 3.21–3.67; Rl/Pl 0.90– 0.92), female rostrum slightly longer (Rl/Rw 3.60–4.29; Rl/Pl 0.82–1.00). Antennal funicle 7-segmented. Eyes globose, distinctly convex. Pronotum more or less transverse (Pw/Pl 1.25–1.32 in male, Pw/Pl 1.27–1.38 in female) but always distinctly constricted at apex. Elytra short (El/Ew 1.34–1.50, Ew/Pw 1.31–1.39 in male; El/Ew 1.35– 1.38, Ew/Pw 1.30–1.35 in female), globose, convex. Femora (Fig. 243–244) with tooth, being distinctly robust and sharp on metafemora. Profemora in male with fringe of seta-like scales. Protibiae (Fig. 307) slightly prominent in basal half of inner margin. Third tarsomere distinctly wider than second tarsomere. Claws with robust medial teeth, as long as half of claw. Male genitalia: body of penis (Fig. 364) slightly enlarged towards apex, which is very broad with a small acute tip (Fig. 397), apodeme slightly longer than body of penis. Female genitalia: spermatheca (Fig. 432) with short ramus and short collum, narrow nodulus, curved long cornu parallel-sided and ending with a blunted apex; spiculum ventrale (Fig. 458) with arms joined in basal half then slightly divergent to apex.
Remarks and comparative notes. This species is somewhat variable in the pattern of the elytral vestiture and the width of the pronotum. Several taxa from central Asia and Japan, currently considered synonyms of T. albolineatus, were described due to this variability. This species can be confused with T. quinquepunctatus (Linnaeus, 1758) although the latter is uncommon in the Far East and Japan and is not yet known from China.
Biology. We have studied some specimens collected on Caragana sinica (Buc’hoz) Rehder. and on Labiatae sp., the latter considered an incidental plant association.
Distribution. Russia (Siberia), Mongolia, Korea, Japan. Know in Northeast and North China (HEB NO), new for some provinces of North China (BEI JIL LIA SHX).
description: Published as part of Jiang, Chunyan, Caldara, Roberto & Zhang, Runzhi, 2020, The genus Tychius Germar (Coleoptera: Curculionidae: Curculioninae) in China, with description of three new species, pp. 1-62 in Zootaxa 4856 (1) on pages 8-9, DOI: 10.11646/zootaxa.4856.1.1, http://zenodo.org/record/4411319