Spider

From PyroGuide

A shell containing a fast burning tailed or charcoal star that is burst very hard so that the stars travel in a straight and flat trajectory before burning out. This appears in the sky as a series of radial lines much like the legs of a spider.

Also in cake terms a spider (or often "poisonous spider") has effects that launch as a spinner or torbillion and then burst as a bombette of coloured stars at apogee. The large bore versions from china can be vigorous and somewhat erratic and exciting in flight.