Rhizoglyphus echinopus and Rhizoglyphus robini (Acari: Acaridae) from Australia and New Zealand: identification, host plants and geographical distribution

Abstract

Rhizoglyphus echinopus (Fumouze & Robin, 1868) and R. robini Claparède, 1869 are important pests attacking bulbs, corms and tubers of a variety of crops (e.g. onions, garlic and other vegetables) and ornamentals (lily and other flowers) in greenhouses and in the field worldwide. Their taxonomy, however, is in a state of confusion. Based on a study of several hundreds of specimens from Australia and New Zealand, as well as other countries around the world, this paper provides diagnoses and illustrations of key characters to facilitate the rapid and accurate identification of these two species. Data on host plants, distribution and quarantine implications are also provided.