* Size is a tricky measurement: Different species of insects have different body shapes. Some insects might be very long, while others are wide and heavy. It's hard to compare them directly using a single measurement like length.
* Titanus giganteus is incredibly long: It can reach up to 6.5 inches (16.5 cm) in length, making it a contender for the title of longest insect.
* The "biggest" insect depends on the metric:
* Length: The stick insect (Pharnacia serratipes) from Southeast Asia can reach up to 22 inches (55 cm) in length, making it the longest insect in the world.
* Weight: The Goliath beetle (Goliathus goliathus) from Africa is known for its massive size and can weigh up to 4.7 ounces (134 grams), making it one of the heaviest insects.
Therefore, while the South American long-horned beetle is a giant insect, it's not definitively the biggest in the world. The title depends on how you define "biggest."