Acucapito hainanensis, 2022

Li, Hai-Tao, Jin, Dao-Chao & Guo, Jian-Jun, 2022, Acucapito hainanensis sp. nov., the first record of the family Acucapitidae Wiles, 1996 (Acari, Hydrachnidia) from China, Acarologia 1996 (1), pp. 250-261 : 259

A. hainanensis Li & Guo sp. nov., but only a pair of short plumose setae at the tip of Cx-I in A. vietnamensis ; (4) in males, genital flaps have 17–19 median setae and 9–10 lateral ones at each side in A. hainanensis Li & Guo sp. nov., while they have 14–15 median setae and 11–12 lateral ones in A. vietnamensis ; (5) as for palp of both sexes, P-3 has a sunken area at the ventral side, P-4 only has one distal seta and P-5 is extended out of P- 4 in A. hainanensis Li

& Guo sp. nov., while P-3 is flat, P-4 has three distal setae and P-5 is extremely reduced in A. vietnamensis ( Tuzovskij 2009) .

In addition to the geographical separation between localities of the previously described species (Borneo, Vietnam), the above morphological differences demonstrate that the specimen we collected from Hainan Province, P. R. China represents the third acucapitid mite, Acucapito hainanensis Li & Guo sp. nov. Molecular data (e.g., the barcoding region of COI) would provide valuable additional information about the distinctiveness of these three species and their placement within the Lebertioidea .