First Record of Petrobia (Tetranychina) harti (Ewing, 1909) (Acari: Tetranychidae) in Serbia, with Additional Remarks

The species Petrobia (Tetranychina) harti (Ewing, 1909) is reported for the first time in Serbia, also representing the first record of the tribe Petrobiini Reck, 1952 in the country. Including this finding, the number of spider mite species recorded in Serbia now totals 45. This spider mite species was found exclusively on wood-sorrel plants, Oxalis corniculata L. and O. articulata Savigny., at several localities in the cities of Belgrade and Zrenjanin. The samples were collected during the growing season of 2018 and 2023. Identification of the oxalis mite was based on morphological characteristics. To date, the occurrence of P. (T.) harti on other host plants has not been confirmed anywhere in Serbia. On the observed wood-sorrel plants, P. (T.) harti was recorded in cohabitation only with Tetranychus urticae Koch, 1836.