The Largest Beetle

Photo from University of Florida
Which one is the world's largest beetle is a very difficult question. All depends what exactly means "largest". Is it the heaviest? May be the longest? But in this case with the antennae or with the horns or without them? Or something else? So, according to what feature is measured the answer is variable. On the picture above we can see top, side, and bottom views of five of the bulkiest insects in the World, compared to a 15-cm (6-inch) scale at left. Images are graphically-sized representations of the five species at their maximum known sizes. Scale was achieved by comparing widths first, then body length. From left to right the species are:
Titanus giganteus – 16.7 cm French Guiana, Brazil
Megasoma actaeon – 13.5 cm Columbia, Ecuador, Peru, Brazil
Megasoma elephas – 13.7 cm Mexico through Venezuela
Goliathus regius – 11 cm Ghana, Ivory Coast
Goliathus goliatus – 11 cm Equatorial Africa, central and east
Ghosted to the right of the documented sizes, also to scale, is the mythical "9-inch Titanus" from the popular lore.

See more: The Largest Beetle - part II
Source: Coming soon