title: Developmental features of small spruce bud scale (Physokermes hemicryphus) (Hemiptera, Coccidae) on spruce trees in arboretums and urban plantings
abstract: Small spruce bud scale ( Physokermes hemicryphus Dalman, 1826) is one of the most widespread and harmful phytophagous insects in spruce stands. A feature of its development is the clear synchronization of phenological stages with the seasonal growth dynamics of Norway spruce ( Picea abies (L.) H. Karst, 1881) and blue spruce ( Picea pungens Engelmann , 1875), which ensures a high level of pest adaptability and complicates control measures. Studies have shown that the pest overwinters as the firs
journal: Regulatory Mechanisms in Biosystems