A new species of Nalepella Keifer (Acarina: Eriophyoidea: Phytoptidae) from Abies in Denmark
Boczek, J.; Harding, S.; Shi, A. and Bresciani, J.  A new species of Phthiracarus (Acari: Cryptostigmata) from Great Britain
Harding, D.J.L.