Morphological identification of the red palm mite Raoiella indica Hirst, 1924 (Acari: Tenuipalpidae)
https://doi.org/10.69536/c5052-3340-5726-k
Abstract
The present work is dedicated to the identification of the red palm mite Raoiella indica, belonging to the family Acari: Tetranychoidea: Tenuipalpidae. This mite species is an active invader, damaging tropical and subtropical plant crops. It is assumed that the potential range of the species in case of its invasion to Russia will be the territory of the Southern Federal District. The article provides detailed morphological characteristics of Tenuipalpidae mites, taking into account the generally accepted designations of the chaetome of the body and legs, with a brief consideration of differences in terminology regarding the name of the male copulatory organ. To differentiate the most important life stages of most Tenuipalpidae species, a key table is presented, since species identification is carried out only by adults. The article presents structural features of adult individuals of the red palm mite (males and females), generalized data on spreading, host plants and diagnostic characters of Raoiella species. The diagnostic features of the dorsocentral chaetome, the caudal region and legs of R. indica were studied on the example of the Dominican population. Based on a monograph by Beard et al. (2018) and taking into account the works of Pritchard, Baker (1958) and Mitrofanov, Strunkova (1979), a simplified key table was compiled for the differentiation of R. indica from other species of the genus for the practice of phytosanitary laboratories. This key is based on the following diagnostic characters: the ratio of the lengths of the dorsocentral setae, the lengths of the first pair of dorsocentral setae relative to the first row spacing, the shape of the setae h2, the number of setae on the genu of the first and second pairs of legs, the ratio of the lengths of the proximal solenidion ω’’ and tactile seta ft” on the first pair of legs.
Supporting agencies: The author expresses his gratitude to the leading specialists of FGBU “VNIIKR” PhD in Biology M.K. Mironova and PhD in Biology V.N. Zhimerikin for help in carrying out this work, the staff of the Zoological Institute of the Russian Academy of Sciences (St. Petersburg), especially Advanced Doctor of Biology O.G. Ovchinnikova and G.M. Suleymanova, for help in finding some rare sources. The work was carried out within the framework of research under the state order (NIOKTR No. 5121042600339-5).
About the Author
I. O. Kamayev
FGBU “All-Russian Plant Quarantine Center” (FGBU “VNIIKR”)
Russian Federation
Russian Federation
Ilya Kamayev, PhD in Biology, Senior Researcher, Head of the Ecology and Genetics of Insects and Mites Laboratory of the Research and Methodological Department of Entomology
Bykovo, Ramenskoye, Moscow Oblast
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Review
For citations:
Kamayev I.O. Morphological identification of the red palm mite Raoiella indica Hirst, 1924 (Acari: Tenuipalpidae). Plant Health and Quarantine. 2022;(3):2-16. https://doi.org/10.69536/c5052-3340-5726-k
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