Tychius sulphureus Faust, 1881

Jiang, Chunyan, Caldara, Roberto & Zhang, Runzhi, 2020, The genus Tychius Germar (Coleoptera: Curculionidae: Curculioninae) in China, with description of three new species, Zootaxa 4856 (1), pp. 1-62 : 29-32

publication ID	https://doi.org/ 10.11646/zootaxa.4856.1.1
publication LSID	lsid:zoobank.org:pub:0C2E90FC-25FD-455D-86A7-0BA8210C0A30
DOI	https://doi.org/10.5281/zenodo.4411331
persistent identifier	https://treatment.plazi.org/id/632E87E8-FFA3-FFEE-E6D5-FBA5FD51839E
treatment provided by	Plazi
scientific name	Tychius sulphureus Faust, 1881
status

Treatment

28. Tychius sulphureus Faust, 1881 View in CoL

( Figures 89–92 View FIGURES 73–90 View FIGURES 91–108 , 211–214 View FIGURES 197–220 , 291–292 View FIGURES 275–306 , 331 View FIGURES 307–339 , 344, 356 View FIGURES 340–363 , 387 View FIGURES 380–387 , 422 View FIGURES 397–431 , 451 View FIGURES 432–457 , 478 View FIGURES 458–484 )

Tychius sulphureus Faust, 1881: 325 View in CoL . Caldara, 1986: 180.

Tychius conformis Faust, 1885: 184 View in CoL . Caldara, 1986: 180.

Material examined. CHINA: Xinjiang: Hejinghu (1000–1100 m), 21-VIII-2008, leg Xingmin Wang, Xiaosheng Wang (1); Manasi (380 m), 1-VI-1957, leg Chunpei Hong (1); Tacheng, Alhagi sparsifolia , 24-VI-1984, leg Jiahu Fu (4); Tulufan, (20–140 m), 24-VI-1958, leg Guang Wang (4) .

Redescription. Length 1.75–2.10 mm ( Fig. 89–92 View FIGURES 73–90 View FIGURES 91–108 ). Vestiture on dorsum usually sulphur-yellow. Rostrum ( Fig. 211–214 View FIGURES 197–220 ) at base strongly curved (Rl/Rw 4.17–4.33 in male, 5.18–5.73 in female; Rl/Pl 0.85–0.93 in male, 0.90–0.97 in female), slender from antennal insertion to apex especially in female. Pronotum (Pw/Pl 1.06–1.17) subparallel-sided from base to distal third, slightly wider than long. Elytra suboval (El/Ew 1.38–1.53, Ew/Pw 1.35–1.50), parallel-sided in basal two thirds. Femora ( Fig. 291–292 View FIGURES 275–306 ) unarmed, tibiae ( Fig. 331 View FIGURES 307–339 ) without sexual characters. Third tarsomere distinctly wider than second tarsomere ( Fig. 344 View FIGURES 340–363 ). Claws ( Fig. 356 View FIGURES 340–363 ) with robust medial teeth as long as 2/3 length of claw, fastened to claw in basal half. Male genitalia: body of penis ( Fig. 387 View FIGURES 380–387 ) elongate, subparallel-sided in dorsal view, until near apex, then gradually narrowing, with subacute tip ( Fig. 422 View FIGURES 397–431 ), a little longer than apodeme. Female genitalia: spermatheca see Fig. 451 View FIGURES 432–457 ; spiculum ventrale ( Fig. 478 View FIGURES 458–484 ) with arms almost joined for their entire length.

Remarks and comparative notes. This species, closely related to T. franzi and T. tachengicus (see Remarks of this species), is usually characterized by the colour of the dorsal vestiture, which is sulphur yellow (rarely light yellow) and the shape of the rostrum, being distinctly curved at its base, distinctly tapered in its apical half and long, especially in the female, and by the shape of the penis.

Biology. This species is reported as living on Alhagi sp. (Karasjov 1994). We collected some specimens from A. sparsifolia Shap.

Distribution. As with the previous taxon, this species was known from south European Russia and western to central Asia. New record from China (XIN).