Fallceon longifolius (Kluge, 1992)

L, Carlos Naranjo, Peters, Janice G., del, Pedro López & Castillo, 2019, Ephemeroptera (Insecta) in Cuba, Insecta Mundi 2019 (736), pp. 1-52 : 8

A.8. Fallceon longifolius (Kluge, 1992)

Figures 5 , 27f–g, 28 .

Baetis (Fallceon) longifolius Kluge 1992b:44 (male and female imagos, nymph, egg).

Fallceon longifolius ; Lugo-Ortiz, McCafferty and Waltz 1994:465; González-Lazo and Salles 2007:52 .

Holotype. Male imago, Province Santiago de Cuba, La Alcarraza (Guamá), 7-II-1989, N. Kluge.

Fallceon longifolius was originally described by Kluge (1992b) from La Alcarraza and is easily distinguished from other species of Fallceon by its long, narrow gills.

Ecology. According to Kluge (1992b), Cañizares (1998) and Benítez (2007), F. longifolius inhabits the low zones of rivers in backwaters that form along the banks, mainly in mud-bottom areas, and tolerates some degree of pollution. It has a limited altitudinal range, having never been collected above 250 m ( Kluge 1992b, Cañizares 1998). Kluge (1992b) recorded the species for the months of February, March, May, June, July and October; to this we add January and suggest that adults may emerge at any time of the year.

Geographic distribution. Fallceon longifolius has been recorded from the Eastern and Central-East Regions of Cuba ( Kluge 1992b; Benítez 2007) ( Fig. 5 ) and Jamaica ( Naranjo and Peters 2016). Here we add two nymphs from Río Mayarí (Holguín Province) collected on 28-I-2001 by Aldana and Fonseca. González-Lazo and Salles (2007) indicated that a possible record from Mexico (Lugo-Ortiz et al. 1994) was not this species.

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).