how do they look like?
Some phasmids have cylindrical stick-like shapes, while others have flattened, leaflike shapes.
Phasmatodea
Phasmids can be relatively large, ranging from to over in length. Females of the genus "Phryganistria" are the world's longest insects, measuring up to in total length in the case of "Phryganistria chinensis", including the outstretched legs. The heaviest species of phasmid is likely to be "Heteropteryx dilatata", the females of which may weigh as much as .

Some phasmids have cylindrical stick-like shapes, while others have flattened, leaflike shapes. Many species are wingless, or have reduced wings. The thorax is long in the winged species, since it houses the flight muscles, and is typically much shorter in the wingless forms. Where present, the first pair of wings is narrow and cornified (hardened), while the hind wings are broad, with straight veins along their length and multiple cross-veins. The body is often further modified to resemble vegetation, with ridges resembling leaf veins, bark-like tubercles, and other forms of camouflage. A few species, such as "Carausius morosus", 
what does it mean to see a stick bug UNANSWERABLE what is phasmatodea? They are an order of insects whose members are variously known as stick insects, stick-bugs, walking sticks, or bug sticks.
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Phasmatodea [SEP] Description
Phasmids can be relatively large, ranging from to over in length. Females of the genus "Phryganistria" are the world's longest insects, measuring up to in total length in the case of "Phryganistria chinensis", including the outstretched legs. The heaviest species of phasmid is likely to be "Heteropteryx dilatata", the females of which may weigh as much as . Some phasmids have cylindrical stick-like shapes, while others have flattened, leaflike shapes. Many species are wingless, or have reduced wings. The thorax is long in the winged species, since it houses the flight muscles, and is typically much shorter in the wingless forms.