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Revision of Chinese Dilaridae (Insecta: Neuroptera) (Part I): species of the genus Dilar Rambur from northern China.

The pleasing lacewing genus Dilar Rambur is a dominant group of the family Dilaridae in Asia and is diverse in China with 18 described species. Herein we record five species of Dilar. Three species, i.e. Dilar hastatus sp.nov., Dilar spectabilis sp.nov. and Dilar taibaishanus sp.nov. are described as new to science. Dilar sinicus Nakahara and Dilar septentrionalis Navás are also redescribed. A key to the species of Dilar from northern China is given. 