Leptohyphidae

L, Carlos Naranjo, Peters, Janice G., del, Pedro López & Castillo, 2019, Ephemeroptera (Insecta) in Cuba, Insecta Mundi 2019 (736), pp. 1-52 : 22

Leptohyphidae .

28(26). Femora of legs cylindrical, not expanded, with numerous long, thin setae ( Fig. 54b ); nymphs in muddy conditions and body covered with small sediment particles adhering to long setae ( Fig. 54a )........................... Tricorythodes grallator Kluge and Naranjo

— Femora of legs broad, flattened, with short, thick spatulate setae; forefemora with transverse band of setae ( Fig. 55a–b ); habitat variable but not in muddy conditions............. 29

29(28). Operculate gills oval, with maximum width near middle or distal to middle of gill ( Fig. 56–57a ); transverse row of setae on forefemora in proximal third ( Fig. 55a ) (sacculobranchis group).......................................................................... 30

—

Operculate gills suboval to subtriangular with maximum width proximal to middle of gill ( Fig. 58b, 59b ); transverse row of setae near middle of forefemora ( Fig. 55b ) (cubensis group).......................................................................... 31

30(29). Operculate gills with inner margin blackened proximally ( Fig. 56 ); abdominal terga 7–9 with lateral marks much darker than submedial marks; claws with three (sometimes four) thin denticles................................. T. sierramaestrae Kluge and Naranjo

— Operculate gills dark with light markings, distinct pale oval mark near inner base of each operculum ( Fig. 57 ); abdominal terga 7–9 with dark lateral markings similar in intensity to medial markings ( Fig. 57b–c ); claws with only one (occasionally two) small apical denticles................................ T. sacculobranchis Kluge and Naranjo

31(29). Color pattern of operculate gills variable but with lateral curved or triangular pale area ( Fig. 58 ); operculum without ventral lobe; femora with blackish-brown transverse marks...................................................... T. cubensis Kluge and Naranjo

— Operculate gills dark gray except at margins ( Fig. 59a ); operculum with a well-developed ventral lobe; femora without color bands or transverse marks but with grayish longitudinal lines ( Fig. 59a,c )........................................ T. montanus Kluge and Naranjo

Figures

Figures 53–57. Euthyplociidae and Leptohyphidae. 53) Mesoplocia inaccessibile. 53a) Head. 53b) Habitus. 54) Tricorythodes grallator. 54a) Habitus. 54b) Foreleg. 55) Foreleg. 55a) Tricorythodes sacculobranchis. 55b) T. cubensis. 56) Tricorythodes sierramaestrae, operculate gill cover.57) Tricorythodes sacculobranchis. 57a)Operculate gill cover. 57b) Habitus. 57c) Detail of abdominal terga 3–10 with operculate gills. Figure 56–57a after Kluge and Naranjo 1990.

Figures 58–61. Leptohyphidae and Caenidae. 58) Tricorythodes cubensis. 58a) Habitus. 58b) Operculate gill. 59) Tricorythodes montanus. 59a) Habitus.59b) Operculate gill.59c) Habitus. 60) Insulibrachys needhami. 61) Caenis cubensis. 61a) Mature nymph. 61b) Younger nymph. Figure 58b, 59b after Kluge and Naranjo 1990; Fig. 60 after Sun and McCafferty 2008 (gills on right removed).