two brown slugs eating cabbage leaves in the vegetable garden. cabbage slug pest

arion brown cabbage caterpillar chocolate closeup control crawling creep crop crops damage damaged disease diseases eating ecology europe farmer garden gardening gastropod gastropoda grow insect invasion invasive invertebrate land leaf leaves lettuce lusitanicus mollusk pest pests plot pumpkin red rotten slug slugs snail snailplage snails soil spanish species two vegetable