Видовой состав кокцид (Hemiptera, Coccoidea), обнаруженных на плодах и корнеплодах в Сыктывкаре

Coccids are a group of pest insects with pronounced sexual dimorphism. Winged males don’t havefeed organs. Wingless females lead an immobile life under a wax structure (scale cover) and feed on plantjuices piercing them with a long proboscis. At early stages of life cycle, the larvae of scale insects are able to move, and the larvae of soft scales are mobile throughout the entire life-time. They are able to move with air flows or creep along the feed substrate, forming extensive colonies. These large colonies deplete and deform the host plants, making them vulnerable to diseases and even can cause plant death. Considering the geographical location, it should be noted that the majority of coccid species live in areas with tropical and subtropical climate. The pests can passively migrate with seedlings, fruits or vegetables.Coccids that live on seedlings or potted plants are the most dangerous. Those living on fruits do less harm.The study of the species composition of coccids on fruits and roots imported to Syktyvkar has not been carried out yet. Here, we present the results of laboratory studies of fruits and root crops for the presence of coccids for the period 2017–2019. For each species, we indicate the economically valuable host plants. The identification of coccids was made by the microstructure features of terminal segments of the abdomen in females (pygidium).According to the results conducted in the laboratory of the «Russian Plant Quarantine Center» in the KomiRepublic, 13 species of scale insects (Diaspididae) and one species of coccids (Coccoidae) were identified.Four species have the status of a quarantine object on the territory of the Eurasian Economic Union (EAEU), among them three are quarantine for the Russian Federation.