Sinodorcadion Gressitt, 1939

Zhao, Shuai, Xie, Guanglin & Wang, Wenkai, 2020, Two new species of the genus Sinodorcadion Gressitt, 1939 (Coleoptera: Cerambycidae: Lamiinae), Zootaxa 4768 (2), pp. 291-296 : 295-296

Key to the species of genus Sinodorcadion Gressitt, 1939

1 Elytra with distinct transverse pubescent band.............................................................. 2

- Elytra without band, commonly mottled with irregular patches................................................. 3

2 Body mostly clothed with brown pubescence; antennae shorter than body in female; elytra with distinct posteromedial yellowish band and a vague, incomplete basal yellowish spot................................ S. subspinicolle Breuning, 1959

- Body mostly clothed with gray pubescence; antennae remarkable longer than body in both sexes, in females about 1.5 times as long as body; elytra with a black patch on anterior third and a broad black median band.. S. zenghuaae Xie & Wang sp. nov.

3 Scape with punctures.................................................................................. 4

- Scape without punctures................................................................................ 5

4 Male maxillary and labial terminal palpomere distinctly expanded apically, ratio of elytral length to maximum elytral width about 1.8, apical three quarters of elytra presents irregular mottled patches, antennae about 1.4 times as long as body.......................................................................... S. punctuscapum Xie, Shi & Wang, 2013

- Male maxillary and labial terminal palpomere not obviously expanded apically ( Fig. 9 ), ratio of elytral length to maximum elytral width about 2.1, apex of elytra with a large reddish-brown to yellowish-brown area, antennae about 2.0 times as long as body...................................................................... S. chinense Xie & Wang sp. nov.

5 Mesoventrite with punctures............................................................................ 6

- Mesoventrite without punctures................................................. S. jiangi Xie, Shi & Wang, 2013

6 Lateral tubercles of pronotum small, elytra with vague mottled maculae................... S. punctulatum Gressitt, 1939

- Lateral tubercles of pronotum well developed, with broad base; elytra with conspicuous pubescent maculae................................................................................ S. magnispinicolle Xie, Shi & Wang, 2013

Figures

FIGURES 9–16. Sinodorcadion spp. 9–12. S. chinense Xie & Wang sp. nov. 13–16. S. zenghuaae Xie & Wang sp. nov. 9–10. Labial palpus. 11, 15. Scape showing the sparse punctures. 12, 16. Mesoventrite. 13–14. Head in ventral view showing the maxillary and labial palpi. 9, 11–13, 15–16. Holotype, male. 10, 14. Paratype, female.