Tychius obrieni Jiang & Caldara, 2020

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 : 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.4501858
persistent identifier	https://treatment.plazi.org/id/632E87E8-FFA0-FFEE-E6D5-FE38FE2487AE
treatment provided by	Plazi
scientific name	Tychius obrieni Jiang & Caldara
status	sp. nov.

Treatment

29. Tychius obrieni Jiang & Caldara n. sp. Zoobank.org/ urn:lsid:zoobank.org:act:7AC17E3A-DF0E-4184-987A-C2DAB65A5A1D

( Figures 93–96 View FIGURES 91–108 , 215–218 View FIGURES 197–220 , 293–294 View FIGURES 275–306 , 332 View FIGURES 307–339 , 345, 357 View FIGURES 340–363 , 388 View FIGURES 388–396 , 423–424 View FIGURES 397–431 , 452 View FIGURES 432–457 , 479 View FIGURES 458–484 )

Material examined. Holotype, male, CHINA: Xinjiang: Tulufan , (20–140 m), 24-VI-1958, leg Guang Wang ( IOZCAS) . Paratypes, same data as holotype (96 IOZCAS; 2 ASUCOB).

Diagnostic description. Length 1.95–2.50 mm ( Fig. 93–96 View FIGURES 91–108 ). Vestiture on dorsum grayish brown, either unicolorous or feebly bicoloured on elytra. Rostrum ( Fig. 215–218 View FIGURES 197–220 ) short (Rl/Rw 4.46–4.62 in male, 4.62–4.85 in female; Rl/Pl 0.83–0.84 in male, 0.82–0.85 in female), moderately stout, weakly curved in lateral view, poorly sexually dimorphic. Pronotum (Pw/Pl 1.03–1.13) subparallel-sided from base to distal third, slightly wider than long. Elytra suboval (Ew/Pw 1.33–1.40; El/Ew 1.48–1.64), with slightly rounded sides in basal half. Femora ( Fig. 293–294 View FIGURES 275–306 ) unarmed, tibiae ( Fig. 332 View FIGURES 307–339 ) without sexual characters. Third tarsomere moderately wider than second tarsomere ( Fig. 345 View FIGURES 340–363 ). Claws ( Fig. 357 View FIGURES 340–363 ) with robust medial teeth as long as 2/3 length of claw, separated from claw from base. Male genitalia: body of penis ( Fig. 388 View FIGURES 388–396 ) in dorsal view moderately stout at basal half, with sides very slightly rounded, then narrowed and parallel-sided, slightly narrow apically, with subacutely pointed tip ( Fig. 423–424 View FIGURES 397–431 ), in lateral view moderately curved and with rectilinear apical part, slightly shorter than apodeme. Female genitalia: spermatheca see Fig. 452 View FIGURES 432–457 ; spiculum ventrale ( Fig. 479 View FIGURES 458–484 ) with arms almost joined for their whole length.

Remarks and comparative notes. This species is characterized by the rostrum being weakly curved in lateral view and poorly sexually dimorphic. In the female the rostrum is of the same width from the antennal insertion to the apex. The body of penis in dorsal view is moderately stout in the basal half, with sides very slightly rounded, then narrowed and parallel, slightly narrow apically and with subacutely pointed tip. In lateral view the penis is moderately curved and with rectilinear apical part, slightly shorter than the apodeme.

Etymology. We name this species after our friend Prof. Charles O’Brien, “the weevil man”, who dedicated his life to weevil taxonomy and who recently passed away. We will remember him forever.

Biology. No data are available.

Distribution. China (XIN).