The presence and harmfulness of mulberry scale, Pseudaulacospis pentagona Targioni-Tozzetti in Serbia

Abstract

The aim was to present the results of an investigation of distribution, host plants, population density and adverse effects of mulberry scale, P. pentagona, in Serbia. The investigation was carried out during the 1997-2000 period. The presence of P. pentagona was determined on 15 localities in Serbia and 29 localities in Belgrade and its environs. Mulberry scale was found on 38 plant species belonging to 28 genera and 21 family. Eight plant species, four genera and two families were registered for the first time as mulberry scale hosts. Infestation intensity varied according to localities and host plants and ranged from single samples to large aphid colonies. There were no visible symptoms of damage on plants at low infestation intensity. High infestation intensity tended to dry either some plant parts or whole plants.

U radu su prikazani rezultati proučavanja rasprostranjenosti, biljaka domaćina, intenziteta napada i štetnosti dudove štitaste vaši, Pseudaulacaspis pentagona, na području Srbije. Istraživanja su obavljena u periodu od 1997. do 2000. godine. Prisustvo P. pentagona je utvrđeno na 15 lokaliteta na području Srbije i 29 lokacija na teritoriji Beograda i šire okoline. Dudova štitasta vaš je evidentirana na ukupno 38 vrsta biljaka iz 28 rodova i 21 botaničke familije. Osam vrsta biljaka, četiri roda i dve botaničke familije prvi put su registrovane kao domaćini dudove štitaste vaši. Intenzitet napada je varirao po lokalitetima i biljkama domaćinima, i kretao se od pojedinačnih primeraka do velikih kolonija vaši. Na biljkama sa slabim intenzitetom napada nisu zabeleženi vidljivi simptomi oštećenja, dok je na biljkama sa jakim intenzitetom napada bilo primetno sušenje pojedinih delova biljke ili celih biljaka.