This is the only known insect in the world to feature a giant single spermatazoon.

It describes the appearance, habits and locality of all the known insects except the beetles, and is a marvel of patient and accurate observation.

More important, pilingitam was anti-fungal and no known insect had ever considered it a suitable dinner.

World's oldest known insect, Rhyniognatha hirsti named by Robert John Tillyard.

The petroleum fly, Helaeomyia petrolei, is the only known insect whose larva live in naturally occurring crude petroleum.

Unlike most other pests, the adelgid apparently is not controlled by any other known insect or animal, said Mr. Smith.

Vespa mandarinia japonica (sometimes known as Japanese giant hornet) - the largest wasp, and the most venomous known insect (per sting).

Scientists find a fossilised head and identify it as part of a 400 million-year-old fly, making it the oldest known insect.

Queen ants have one of the longest life-spans of any known insect - up to 28 years in captivity.

The Petroleum fly, formerly P. petrolei, which is the only known insect to develop in naturally occurring crude oil, was transferred to genus Helaeomyia.