black and scary dead beetle larva or aclypea opaca feeding on lettuce leaves

malacophagus garden horticulture lettuce leaves pest ancient historical fossil survivor eats tender juicy larva black segments predator mollusk mollusceater hunter dead food hungry ugly disgusting beetle insect grub nature wild larvae plant life scavenger winged maxillary arthropod closeup crawl creature macro nicrophorus silphidae vespillo insecta farm agriculture creepy