30. Tychius zhangi Jiang & Caldara n. sp. Zoobank.org/ urn:lsid:zoobank.org:act: 0E8C0D6B-E580-43DE-990F-5DC4A26695DC

(Figures 97–100, 219–222, 295–296, 333, 346, 358, 389, 425, 453, 480)

Material examined. Holotype, male, CHINA: Xinjiang: Tulufan, (20–140 m), 24-VI-1958, leg Guang Wang (IOZCAS) . Paratypes, same data as holotype (2 IOZCAS); Jiashi (1160 m), 20-VI-1959, leg Afu Tian (1 IOZCAS); Hejing, 26-VII-1958, leg Changqing Li (1 IOZCAS) .

Diagnostic description. Length 1.90–2.50 mm (Fig. 97–100). Vestiture on dorsum grayish unicolorous. Rostrum (Fig. 219–222) moderately long, poorly sexually dimorphic, slightly longer in female than in male (Rl/Rw 5.30–5.50 in male, 7.00– 7.50 in female; Rl/Pl 0.88–0.92 in male, 0.93–0.94 in female), thin, in lateral view curved at base, then almost straight to apex. Pronotum (Pw/Pl 1.10–1.17) with slightly rounded sides from base to apex, slightly wider than long. Elytra suboval (Ew/Pw 1.26–1.36; El/Ew 1.50–1.69), with slightly rounded sides in basal half. Femora (Fig. 295–296) unarmed, tibiae (Fig. 333) without sexual characters. Third tarsomere moderately wider than second tarsomere (Fig. 346). Claws (Fig. 358) with small medial teeth as long as 1/3 of claw, separated from claw from base. Male genitalia: body of penis (Fig. 389) in dorsal view moderately large, parallel-sided near to apex, with acutely pointed apex (Fig. 425), in lateral view strongly curved and very subtle, nearly as long as apodeme. Female genitalia: spermatheca see Fig. 453; spiculum ventrale (Fig. 480) with thin arms spaced in basal third but distinctly narrowing to middle, then completely joined to apex.

Remarks and comparative notes. This species is closely related to T. tachengicus and T. sulphureus . Tychius zhangi differs by the rostrum of both sexes being longer and that of the female in lateral view of the same width from the antennal insertion to the apex and not distinctly narrowed. The medial teeth of the claw are distinctly smaller and shorter than in the other two species. Finally, the body of the penis in dorsal view is moderately large, parallelsided near to apex, with acutely pointed apex, in lateral view strongly curved and very subtle, nearly as long as an apodeme.

Etymology. The name of this species is the family name of our corresponding author Prof. Runzhi Zhang. We would like to thank him for supporting our work in weevil taxonomy.

Biology. No data are available.

Distribution. China (XIN)