Swarms of water bugs have invaded light sources, doorways, and storefronts in Russia's Khanty-Mansi Autonomous Okrug, local residents and news outlets reported.
The infestation of water boatmen insects has affected the Siberian towns of Pyt-Yakh, Surgut, and Khanty-Mansiysk, according to Russian news outlet Pod'yem. One local resident noted that people living in the area had never seen such a massive accumulation of insects before.
Causes of the seasonal insect migration
Officials from the regional department of Rospotrebnadzor, Russia's public health watchdog, explained that hot summer weather combined with an abundance of standing water bodies created ideal conditions for the insects to reproduce rapidly in large numbers.
Representatives from the health agency said the bugs are currently undergoing a seasonal migration to seek deeper bodies of water for wintering. Bright artificial lighting outside residential entrances and commercial stores disorients the flying insects and knocks them off their flight paths.
A spokesperson for the health authority advised residents who encounter the swarms to simply walk past without disturbing them. The official assured the public that the water boatmen pose no danger to humans, as they do not bite and do not transmit infectious diseases, rendering chemical pest control treatments unnecessary.
Background on the region and aquatic insects
Khanty-Mansi Autonomous Okrug, also known as Yugra, is located in Western Siberia along the Ob and Irtysh river systems. Khanty-Mansiysk serves as the administrative center of the region, while Surgut is its largest city. The territory is characterized by vast taiga forests, extensive wetlands, and thousands of shallow lakes that provide natural habitats for aquatic life.
Water boatmen, belonging to the insect family Corixidae, are non-aggressive aquatic bugs found in freshwater environments throughout northern Eurasia. Equipped with long, oar-like hind legs for swimming, adult water boatmen also possess fully developed wings that allow them to fly long distances between bodies of water during seasonal migrations.
Similar insect swarms have been observed in other parts of the country in recent times. In a previous incident, swarms of insects covered asphalt roads like a thick carpet in a settlement situated near the eastern Russian city of Khabarovsk.
