Install insect screening over attic and exhaust vents. Besides being a nuisance, the beetles emit an acrid odor and can stain surfaces with their yellowish secretions when disturbed volatile compounds used in defense against bird and other vertebrate predators. The also had the new 12v electrical system, dual circuit brakes in and before, all four wheels worked off the same master cylinder--which means if you tear out a brake hose, you lose ALL your hydraulic brakes. There are butterfly species in North America, including the common copper Lycaena phlaeas , California tortoiseshell Nymphalis californica and metalmark butterfly Apodemia mormo langei.. In Japan, it is also abundant in soybean fields. It is a bug not a beetle. The adults and larvae of most Asian lady beetles are predators of:.