Biological pest control predatory midge "Feltiella acarisuga", and a ladybird "Stethorus punctillum". The bug "Orius insidiosus" has been successfully used against the two-spotted spider mite and the western flower thrips ("Frankliniella occidentalis"). Predators including "Cactoblastis cactorum" (mentioned above) can also be used to destroy invasive plant species. As another example, the poison hemlock moth ("Agonopterix alstroemeriana)" can be used to control poison hemlock ("Conium maculatum"). During its larval stage, the moth strictly consumes its host plant, poison hemlock, and can exist at hundreds of larvae per individual host plant, destroying large swathes of the hemlock. Not all biological control agents are directed at
History of poison as several of its surrounding islands. The juice or liquid extracts are smeared on the head of the arrow, and inflicts the target paralysis, convulsions and/or cardiac arrest, virtually on strike due to the speed in which the extracts can affect a victim. As well as plant based poisons, there are others that are made that are based on animals. For example, the larva or pupae of a beetle genus of the Northern Kalahari Desert is used to create a slow-acting poison that can be quite useful when hunting. The beetle itself is applied to the arrow head, by squeezing