A new fossil psyllid, Cacopsylla trigona sp. nov. (Hemiptera: Psylloidea: Psyllidae), from the Miocene of China

Psyllinae, a subfamily of Psyllidae, currently includes 29 genera (Burckhardt & Ouvrard, 2012; Ouvrard, 2018), of which Cacopsylla Ossiannilsson, 1970 is the most species-rich genus, distributed mainly in the Northern Hemisphere (Li, 2011; Ouvrard, 2018). In China, more than 300 extant species of Cacopsylla have been reported (Yang et al., 2004; Li, 2011; Luo et al., 2012, 2016). Based on recent molecular phylogenetic analyses, Cacopsylla in its current sense is a polyphyletic genus (Percy et al., 2018; Cho et al., 2019).