Phasmida
are hemimetabolous and generally elongate, though some forms (Leaf-Insects)
are broad and flattened. Some forms are apterous (winged) though often only
the male flies. They have biting and chewing mouthparts and are all phytophagous
(leaf eating). They all posses compound eyes and some of the winged forms
possess 2 ocelli. Their antennae are generally filiform ranging from 8 to
over 100 segments and their cerci are short. They are often adorned with
numerous spines and other protuberances.
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