Are these girl beetles merely nosey or are we subsequent on the menu now that the aphids are gone? As winter approaches, Harmonia search protected areas equivalent to crevices and cracks in rocky cliffs and outcroppings to flee the ravages of winter. All through the cities and suburbs of the DMV rocky cliffs are scarce, however houses and buildings are plentiful. Just like the brown marmorated stink bug we met in earlier episodes, that is the time that Harmonia fly to human-made buildings and try to search out refuge. Any cracks round home windows, breaks in stone foundations, unscreened vents within the attic, or gaps in facer boards can permit entry into your house. As soon as contained in the beetles settle-in and turn out to be dormant for the winter. Many will dehydrate or starve to loss of life indoors, however on heat days within the late winter and early spring survivors might turn out to be lively and discover their approach to sunny home windows, the place they try to flee. To forestall girl beetles and different invaders from getting into your house, restore screens in your home windows and vents, caulk your basis, seal air conditioners, and get rid of factors of entry to your house. Not solely will this maintain invaders out, however it can additionally assist maintain heat air in and scale back your heating prices. In the event you discover the beetles are an issue indoors, fastidiously sweep or vacuum them up and launch them in a protected spot outside equivalent to a instrument shed or wooden pile.
One of many actual delights of the season is to go to close by summits such because the rocky crags of Outdated Rag Mountain in Virginia or Sugarloaf Mountain in Maryland to witness legions of multicolored Asian ladybeetles gathering on the sunny cliffs for one final bask within the solar earlier than delivering for the winter. However you higher hurry. The arrival of the multicolored Asian girl beetle is a certain signal that Outdated Man Winter is simply across the nook.
Bug of the Week thanks Kevin Ambrose whose current account of Harmonia within the Washington Publish offered the inspiration for this episode. The fascinating research by Sam Ramsey and John Losey entitled “Why is Harmonia axyridis the wrongdoer in coccinellid biting incidents? “, “The chemical ecology of Harmonia axyridis” by John J. Sloggett, Alexandra Magro, François J. Verheggen, Jean-Louis Hemptinne, William D. Hutchison, and Eric W. Riddick, and “Multicolored Asian Woman Beetle” by Joe Boggs and Susan Jones have been consulted to organize this text.