Abstract
A survey of Panonychus species was undertaken across Georgia from 2005 to 2014 on various host plants, revealing three species: Panonychus citri (McGregor, 1916), Panonychus hadzhibejliae (Reck, 1947) and Panonychus ulmi (Koch, 1836). New hosts for P. ulmi and P. citri are recorded, Buxus sempervirens, Hedera colchica and Prunus laurocerasus for P. ulmi and Ficus carica for P. citri, whereas P. hadzhibejliae was only found on F. carica. The newly collected material also allowed us to investigate the taxonomical status of P. hadzhibejliae. The comparison of P. hadzhibejliae with the two closely related species sampled in the survey, P. ulmi and P. citri, and with data of P. caricae found in the literature, shows that P. hadzhibejliae is a valid species. It can be separated from the three other Panonychus species without ambiguity especially using the female dorsal setae length in combination with the ratio between the length of the female dorsal opisthosomal f2 and h1 setae and the ratio between the palptarsal terminal eupathidium su and the related solenidion ω. A redescription of P. hadzhibejliae is provided including the male and some morphological characters, measurements and drawings of the female that were omitted in the original description. A key to the world species of Panonychus is also proposed.
References
Arabuli, T. (2008) Tetranychoid Mites (Acari: Tetranychoidea) Fauna of Georgia. Proceedings of the Georgian Academy of Sciences, Biological Series B, 6, 86–97.
Bagdasarian, A.T. (1957) Tetranychoid mites (superfamily Tetranychoidea). Fauna of the Armenian S.S.R. Akademia Nauk Armenia S.S.R. Zool. Institut, Erevan, 163 pp.
Bolland, H.R., Gutierrez, J. & Flechtmann, C.H.W. (1998) World catalogue of the spider mite family (Acari: Tetranychidae). Brill Academic Publishers, Leiden, 392 pp.
Ehara, S. (1978) A new genus and a new subgenus of the spider mites from northern Japan (Acarina : Tetranychidae). The Journal of the Faculty of Education, Tottori University, Natural Science, 28, 87–93.
Ehara, S. & Gotoh, T. (1987) Notes on the genus Sasanychus Ehara, new status, with description of a new species from Hokkaido (Acarina, Tetranychidae). Zoological Science, 4, 375–378.
Ehara, S. & Gotoh, T. (1991) A new species of Panonychus from dwarf bamboo in Japan (Acari: Tetranychidae). International Journal of Acarology, 17, 9–12.
http://dx.doi.org/10.1080/01647959108683879Ehara, S. & Gotoh, T. (1992) Descriptions of two Panonychus spider mites from Japan, with a key to species of the genus in the world (Acari: Tetranychidae). Applied Entomology & Zoology, 27, 107–115.
Ehara, S. & Gotoh, T. (1996) Two new species of spider mites occurring in Japan (Acari, Tetranychidae). Journal of the Acarological Society of Japan, 5, 17–25.
http://dx.doi.org/10.2300/acari.5.17Hatzinikolis, E.N. (1984) Description of Panonychus caricae new species on fig-trees in Greece (Acari: Tetranychidae). Entomologia Hellenica, 2, 55–61.
Koch, C.L. (1836) Deutsche Crustacea, Myriapoda, Arachnida. Fasc. 1. [unkown publisher and total page number]
Lindquist, E.E. (1985) External anatomy. In: Helle, W. & Sabelis, M.W. (Eds.), Spider mites. Their Biology, natural enemies and control. Elsevier Science Publishing, Amsterdam, pp. 3–28.
Lucas, H. (1849) Genus Tetranychus. In: Exploration scientifique de l'Algérie pendant les années 1840, 1841, 1842. Sciences Physiques et Zoologiques, Paris, 309 pp.
Manson, D.C.M. (1963) Mites of the families Tetranychidae and Tenuipalpidae associated with citrus in South East Asia. Acarologia, 5, 351–364.
McGregor, E.A. (1916) The citrus mite named and described for the first time. Annals of the Entomological Society of America, 9, 284–290.
http://dx.doi.org/10.1093/aesa/9.3.284Mellot, J.L. (1968) Panonychus caglei, new species, the Raspberry red mite (Acarina : Tetranychidae). Acarologia, 10, 230–244.
Migeon, A. & Dorkeld, F. (2006–2015) Spider Mites Web: a comprehensive database for the Tetranychidae. Available from: http://www.montpellier.inra.fr/CBGP/spmweb (accessed 4 February 2016)
Mitrofanov, V.I., Strunkova, Z.I. & Livshits, I.Z. (1987) Keys to the tetranychid mites (Tetranychidae, Bryobiidae) fauna of the USSR and adjacent countries. Donish, Dushanbe, 224 pp.
Oudemans, A.C. (1931) Acarologische Aanteekeningen CVI. Entomologische Berichten, Amsertdam, 8, 189–204.
Pritchard, A.E. & Baker, E.W. (1955) A revision of the spider mite family Tetranychidae. Memoir Series 2. Pacific Coast Entomological Society, San Francisco, 472 pp.
Reck, G.F. (1947) New species of tetranychid mites from Georgia. (Tetranychidae, Acari). Soobshcheniya Akademii Nauk Gruzinskoi SSR, 8, 471–475.
Reck, G.F. (1959) A key to the tetranychoid mites. Akademii Nauk Gruzinskoi SSR, Tbilissi, 152 pp.
Reck, G.F. (1976) Katalog Acarofauni Gruzinskoi CCR. Metsniereba Publ., Tbilisi, 126 pp.
StatSoft (2011) STATISTICA (logiciel d'analyse des données), version 10. Available from: http://www.statsoft.fr (accessed 10 May 2016)
Tseng, Y.H. (1974) Systematics and distribution of phytophagous and predatory mites on grape in Taiwan. Part I. Phytophagous mites. Journal of the Agricultural Association of China, 88, 56–73.
Tseng, Y.H. (1990) A monograph of the mite family Tetranychidae (Acarina : Tronbidiformes) from Taiwan. Taiwan Museum Special Publication Series, 9, 1–226.
Vis, R.M.J.d. & de Moraes, G.J. (2002) A new species of Panonychus (Acari: Tetranychidae) from Peru. Zootaxa, 48, 1–6.
Wainstein, B.A. (1960) Tetranychoid mites of Kazakhstan (with revision of the family). Trudy Nauchno- Issledovatel'skogo Instituta Zashchita Rastenii Kazakh., 5, 1–276.
Yokoyama, K. (1929) New textbook of sericultural insect pest. Saishin Nippon Sangyo Gaichu Zensho. Meibun-do, Tokyo, 569 pp.