SEOUL (Reuters) -Residents in and around the South Korean capital Seoul are complaining about swarms of black insects dubbed "lovebugs" covering hiking trails and ambushing people, as rising temperatures due to climate change spur their spread.

Millions of “lovebugs” have invaded South Korea, swarming hiking trails and urban areas across the capital. Clouds of the insects, which do not transmit diseases or sting humans, can be seen flocking over the peak of Gyeyang Mountain in Incheon city.

SEOUL, South Korea -- Swarms of “lovebugs” are back in South Korea, blanketing a mountain peak, entering houses and sticking to car windows. Flying attached to one another while mating, the insects, known to scientists as Plecia nearctica, are also called united bugs, double-headed bugs or honeymoon flies.