Figure 7. Serrulate setae. A, typical serrulate setae from maxilliped 1 in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 7. Serrulate setae. A, typical serrulate setae from maxilliped 1 of Pagurus bernhardus. Setules are small and only present on the distal half of the seta. B, middle part of serrulate seta with setules in three rows. C, setules from serrulate seta arranged randomly along the shaft. Note strong serration. D, small setules with weak articulations (arrows). E, scalelike setules from serrulate seta of Palaemon adspersus. Note serration on distal rim (arrows). F, terminal pore (arrow) from serrulate seta. G, serrulate setae on the coxa of maxilla 1 of Penaeus monodon. Abbreviation: Su, serrulate setae.