Four new species of Trigonalyidae are described and illustrated from Qinling Mts (Shaanxi, NW China): Bareogonalos
xibeidai Tan & van Achterberg, sp. n., Jezonogonalos
mandibularis
sp. n., J.
shaanxiensis
sp. n., and Taeniogonalos
paraclypeata
sp. n.
Orthogonalys
hirasana Teranishi, 1929, is re-instated and reported from China. The female of Taeniogonalos
alticola (Tsuneki, 1991) is described for the first time. In total, 18 species are known from Shaanxi province, 20 species for NW China, and eight described species are newly recorded for Shaanxi: Jezonogonalos
luteata
Chen et al., 2014, Orthogonalys
hirasana Teranishi, 1929, O.
elongata Teranishi, 1929, Pseudogonalos
hahnii (Spinola, 1840), Taeniogonalos
alticola (Tsuneki, 1991), T.
formosana (Bischoff, 1913), T.
taihorina (Bischoff, 1914), and Teranishia
glabrata
Chen et al., 2014. Poecilogonalos
maga Teranishi, 1929, syn. n. and Taiwanogonalos
claripennis Tsuneki, 1991, syn. n. are new synonyms of Taeniogonalos
taihorina (Bischoff, 1914) and Taiwanogonalos
alishana Tsuneki, 1991, syn. n. of Taeniogonalos
alticola (Tsuneki, 1991). Revised keys to species of the genera Bareogonalos, Jezonogonalos, and Orthogonalys are included.