Fig. 5

Scanning micrographs of Higgins larva of R. manuelae sp. nov. a Ventral view of whole larva with the introvert extended. b Dorsal view of Higgins larva with introvert retracted. Note the middorsal hook extending from the top. c Lateral view of early-stage Higgins larva with the introvert retracted. Note the relatively long toes. d Apical view of Higgins larva. Note the mouth opening surrounded by six lobes. e Detail of scalids in middorsal region, rows 4–8. Note the middorsal hook and the modified scalid in row 5. f Detail of scalids in midventral region. Note the modified midventral pair of scalids in row 2 and the modified midventral scalid of row 6. g Lateral view of posteriormost body region. Note the toes, the anal field and the lorical plicae. Only two pair of setae appears. h Detail of unmodified scalids of rows 4 and 5. i Midventral view of the anterior part of the lorica. Thorax plates can be seen over the conspicuous triangular plate of the lorica. ap Anal plate, cs clavoscalid, do double organ, dps dorsal posterior seta, in introvert, m mouth, mc mouth cone, mv midventral, mdh middorsal hook, la loricate abdomen, las lateral anterior seta, ss spinoscalid (followed by the corresponding row number), ss5md middorsal scalid of scalid row 5, ss6mv midventral scalid of scalid row 6, th thorax, to toe, tp triangular plate of anterior region of lorica, vas ventral anterior seta, vps ventrolateral posterior seta