Grelth

A grelth is an Andorian arachnid.

In 2267, Sahirn P'Thall referred to Aaron Cole as a grelth. 

In 2376, after Thirishar ch'Thane encountered his mother Charivretha zh'Thane aboard the USS Defiant (NX-74205) (II), the nervous Shar imagined he could feel a grelth spinning a web in his stomach.