Spilosoma, [408]

Spinneret, [324], [325], [403], [417]

Spirachtha, [227]

Spiracles, [188], [191];

of Diptera, [449] f.;

of Hippoboscidae, [519];

of Lepidoptera, [313], [314];

of Lipara, [451];

of Nepa, [564];

of Thrips, [528]