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None. Insects always have 3 pairs of legs. That is one of the features that defines the word insect.

Creatures such as Spiders, centipedes, millipedes and scorpions are no longer considered insects, although they were in Carolus Linnaeus's original classification system, as were allmembers of the phylum Arthropoda (which basically means "jointed leg"). Somewhere in the mid 1800s, zoologists - specifically entomologists - decided that only 6-legged animals would be included in the classification Insecta, and would here-ever-after be classified as Hexapoda. The spiders, et al, were dropped into their own categories.

As for the word "bug", it too is a specifically defined entomological term and does not refer to everything that crawls. It refers to only two suborders of the order Hemiptera, and does not include such well known "bugs" as the ladybug, the doodlebug or the sow bug (all of which, by the way, are insects).

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12y ago

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