Abstract
The dependence on adult female morphology for the determination of soft scale insect species (Hemiptera: Coccomorpha: Coccidae) creates several problems. In this paper, various nymphal stages of soft scale insects from the Ankara district of Trkiye and Israel, belonging to Coccidae: subfamily Eulecaniinae, namely Eulecanium cerasorum (Cockerell), E. ciliatum (Douglas), E. tiliae (Linnaeus), Paleolecanium bituberculatum (Signoret), Physokermes piceae (Schrank) and Rhodoccus perornatus (Cockerell & Parrott) were studied. The morphology of all the nymphal stages of these species is described and illustrated, and identification keys are provided to each instar. The results show that nymphal stages can be used to accurately identify soft scale insect species.
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