Associations and a new species of the genus Apatidelia (Trichoptera, Apataniidae) from China

Nine individuals of Apatidelia from Zhejiang Province, China were examined and their barcode sequences were generated and analyzed. A new species, A. morsei Xu & Sun sp. nov., is described and illustrated. The larva, male and female of A. acuminata Leng & Yang, 1998 and the male and female of A. morsei Xu & Sun sp. nov. are associated by mtCOI gene sequences. The male of A. acuminata Leng & Yang, 1998 is re-described and re-illustrated, and the female and the larva of the same species are also described and illustrated. Females and larvae of the genus are here reported for the first time.