Key to species of Decliviassus (males) from China (modified from Dai et al. 2015) 1. Dorsal coloration pale yellow, without numerous small black spots; style apex slender, not footlike (Figs. 33, 36, 48)...... 2 - Dorsal coloration dull stramineous, with numerous small black spots; style apex broadened, footlike (Fig. 32)..................................................................................... D. maculatus Dai, Dietrich & Zhang 2. Pronotum with pair of brown submarginal spot, aedeagus in lateral view with apex bent posterad (Fig. 31)..................................................................................... D. bipunctatus Dai, Dietrich & Zhang - Pronotum without spots, aedeagus in lateral view with apex curved anterad (Figs. 34–35, 49–50)...................... 3 3. Aedeagus base with two prolonged straps (Figs. 34–35).............................. D. nudus Dai, Dietrich & Zhang - Aedeagus base without prolonged strap (Figs. 49–50)......................................... D. sagittatus sp. nov.

Published as part of Wang, Xian-Yi, Wu, Yun-Fei & Dai, Ren-Huai, 2018, Three new species of the leafhopper subfamily Iassinae (Hemiptera: Cicadellidae) from China, pp. 378-388 in Zootaxa 4442 (3) on page 382, DOI: 10.11646/zootaxa.4442.3.2, http://zenodo.org/record/1303707