The identity of Neoseiulus californicus sensu lato is reviewed and its polymorphic nature in published descriptions is discussed. Some mistakes in previous redescriptions of this species are clarified by studying the voucher specimens. A new strain of this species was discovered from Eriobotrya japonica in Dinghushan National Nature Reserve, Zhaoqing, Guangdong Province, southern China, and both adult male and female of this population are redescribed. Previous records of N. californicus and N. fallacis in China are reviewed. Preanal glands are described for the first time for a phytoseiid species. World distribution records for N. californicus sensu lato are reviewed, with extension of its range to southern China and Australia/Oceania.