Insect illustrations, 19th century. The insects shown here include: a stag beetle (Lucanus cervus, top left); a Papilio swallowtail butterfly (upper right); a Dytiscus diving beetle (top right); a Hercules beetle (Scarabaeus hercules, centre, now called Dynastes hercules); a Lampyris glowworm or firefly (below Hercules beetle); a Ptinus fatidicus beetle (lower right); and a South American palm weevil and larva (Curculio palmarum, bottom, now called Rhynchophorus palmarum). This page is from 'Universal Technological Dictionary' (1823) by British author George Crabb (1778-1851).