Figure 29 from: Hrivniak Ľ, Sroka P, Bojková J, Godunko RJ (2020) Identification guide to larvae of Caucasian Epeorus (Caucasiron) (Ephemeroptera, Heptageniidae). ZooKeys 986: 1-53. https://doi.org/10.3897/zookeys.986.56276

Figure 29 Epeorus (Caucasiron) longimaculatus, larva: A labrum (left half in dorsal view right half in ventral view) B incisors of left mandible C incisors of right mandible D setae on dorsal surface of femora E surface and posterior margin of abdominal tergum VII with detail of basally wide seta F gill I G gill III H gill VII (flattened on slide) I–L gill VII (in natural position from ventral view) variability in shape M sternum IX of female N abdominal segments VIII–X in lateral view.