Fallceon sextus (Kluge, 1992)

L, Carlos Naranjo, Peters, Janice G., del, Pedro López & Castillo, 2019, Ephemeroptera (Insecta) in Cuba, Insecta Mundi 2019 (736), pp. 1-52 : 9

A.10. Fallceon sextus (Kluge, 1992)

Figures 5 , 26b, 27e .

Baetis (Fallceon) sextus Kluge 1992b:45 (male imago, nymph, egg).

Fallceon sextus ; Lugo-Ortiz, McCafferty and Waltz 1994:473.

Holotype. Male imago, Province Santiago de Cuba, Río Las Yaguas (Baconao), 12-II-1989, N. Kluge.

Fallceon sextus was described from specimens collected in the Las Yaguas tributary of Baconao, Santiago de Cuba ( Kluge 1992b). In the original figure (reproduced here, Fig. 27e ), the gill tracheae are unpigmented which potentially may be a character to help identify the species. It has not been reported by researchers on aquatic fauna of the Universidad de Oriente. However, in material examined for this publication we found one nymph from the Río La Isabelica (Gran Piedra), 14-II-2000, col. A. Trapero.

Ecology. Little is known concerning the ecology of this species. It has been collected at altitudes of 200–1200 m.

Geographic distribution. Distribution is limited to the Eastern Region of Cuba ( Kluge 1992b) ( Fig. 5 ).

Figures

Figures 1–5. Distribution records for Ephemeroptera in Cuba. 1) Major geographic regions of Cuba (Núñez 1989). 2) Americabaetis naranjoi, Callibaetis floridanus. 3) Cloeodes inferior, C. superior. 4) Caribaetis alcarrazae, C. planifrons, C. grandis. 5) Fallceon longifolius, F. poeyi, F. testudineus, F. sextus.

Figures 24–30. Baetidae. 24) Front of head. 24a–b) Fallceon poeyi with keel. 24c) Caribaetis planifrons. 25) Foreclaw. 25a) Fallceon poeyi. 25b) Caribaetis planifrons (seta retouched). 26. Labium. 26a) Fallceon testudineus. 26b) F. sextus. 27) Abdominal gills. 27a–d) Fallceon poeyi. 27e) F. sextus. 27f–g) F. longifolius. 28. Fallceon longifolius, abdomen.28a) Ventral. 28b) Dorsal.29) Fallceon poeyi. 29a) Terga 2–10.29b) Habitus.30) Caribaetis planifrons, dorsal. Figures 26, 27d–f after Kluge (1992b).