R R Reticulated Rezent Rhabdom Rheophile Rods of Heidenhain S Sabulicolous Sclerite Scrape Segment Semiarid Semihumid Sensillum Seta Sexualdimorphismus Shield Silur Slit (slit organ) sp., spp. & spec. Spermatheka Spermatocleutrum Spermatophore Specialization Spine Spiracle Spotted Spur ssp. Stadium Sternite Sternum Stigma Stridulatory Subaculear sting, tubercle Sympatric Syntype Systematic Systemic