Lagowska, B., & Golan, K. 2002 The scale insects (Hemiptera: Coccoidea) of economic importance in the Kazimierz Landscape Park in Poland.. Bollettino di Zoologia Agraria e di Bachicoltura (Milano) 33(2001-3): 365-372.
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Notes: [Special Issue: Proceedings of the ISSIS IX International Symposium on Scale Insect Studies held at The University of Padua, Italy, Sept. 2-8, 2001.] Observations carried out during 1996-1998 showed that out of 22 scale insect species widely known as pests only Parthenolecanium corni, P. pomeranicum, Aulacaspis rosae, Carulaspis juniperi, Lepidosaphes ulmi, and Leucaspis pini are of great economic importance as they appeared with high frequency and high density, in the Kazimierz Landscape Park (composed of oak-hornbeam [Carpinus betulus] forest, termophilous oakwood, xerothermic sward and brushwood, and anthropogenic communities). The species which are characterized by low frequency, but appearing on their hosts with high density are also of economic significance for trees and shrubs. These are: Kermes quercus, Parthenolecanium rufulum, Asterodiaspis variolosa, Chionaspis salicis and Leucaspis loewi. Attention should also be paid to Planococcus vovae which was characterized by relatively high frequency, but occurred on the junipers only at low density. Another group of scale insects was composed of the species which were characterized by low frequency and occurred on their hosts only at low density.
