An insect that starts with 's' is the scale bug and the stick insect.
The insect name that starts with "U" is a "unicorn mantis."
ant aphid
A fly
an owlfly
Tapeworm
An insect that starts with k is the Khapara Bettle.
Plume moth is an insect. It begins with the letters pl.
termites
Gnats
Of course, there is the spider.
Junebug