Asian Lady Beetle. A native of Asia, this beneficial ladybug was imported in the early 's to help naturally control pest populations that were damaging such crops as alfalfa, pecan and citrus trees. The beneficial aspects of this ladybug have been quite useful in reducing the need for pesticides and have relieved the hardwood forests of many disease carrying aphids, mites and scale insects. They are small, hemispherical in shape, and can be found with and without spots.
Why Do Ladybugs Swarm on Your House?
Spread of invasive ladybugs explained -- ScienceDaily
Ladybugs swarming homes in Tennessee are the result of the 'perfect insect storm,' says one entomologist. Ladybugs typically take to swarming in autumn when temperatures start to drop. October 31, Ladybugs swarming houses in autumn is not a new phenomenon.
Spread of invasive ladybugs explained
The invaders came every fall, but would still manage to catch the Benzine family by surprise. The children shrieked as a great swarm of insects would abruptly rise in a black cloud and fall upon the family, crawling inside their clothing, biting them, and driving them inside for weeks. The tiny dead beetles would accumulate in vast piles, their carcasses leaking a reeking red fluid. Meet Harmonia axyridis , a.
Outdoors, Asian lady beetles helpfully feed on plant pests like aphids and many others. From September to November, they move indoors to overwinter, crawling along windows and walls. Small cracks around windows and door frames provide entry points. While indoors, the pests search for moisture or humidity and bask in warm portions of the building when possible.