Fig. 8 in It is a mess! How many species are in Rivudiva trichobasis Lugo- Ortiz & McCafferty, 1998 (Ephemeroptera: Baetidae)?

Fig. 8. Rivudiva oxum sp. nov. A–D, I–K. Holotype (INPA). E–H. Paratypes (INPA). A. Labrum (left v.v., right d.v.). B. Left mandible. C. Right mandible. D. Maxilla. E–H. Variation of maxillar palp segment II (E–F is related to slide mounting). I. Hypopharynx. J. Labium (left v.v., right d.v.). K. Shape of distal rows of setae of glossa. Not to scale.