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F. mannifera is found from Southern Nicaragua to Northern Panama in tropical lowlands and foothill forests below 300m elevation. In Costa Rica, it occurs on both the western and eastern slopes of the Central Cordillera and into the lowlands to the coasts (Young 1983). It is usually seen on the trunks of large trees, about 2 -3 m above the ground and higher, which is lower than most Costa Rican cicadas which are usually active in the canopy (Young 1983). In Panama, F. mannifera is active in the early and mid wet season. Young (1972, 1980a, 1980b) reports it is present year round in north-eastern and eastern Costa Rica but only from May through October in north-western Costa Rica. This could mean the species is less seasonal in areas with a less seasonal climate (Wolda 1985). Adults are roughly 38 mm long and weigh about 1.3 gm and have membranous wings that are clear and translucent, while their hind wings are shorter but often wider than their front wings. They have very small antennae that arise between the eyes (Evans 1948). They are brownish and can be distinguished from similar Costa Rican species by their stout fuzzy body, their diffuse brown coloration in several wing cells, and their behavior of sitting lower down on tree trunks and singing only at dawn and dusk (Young 1983). Nymphs suck xylem juices from plant roots and from above-ground plants when adults. Males buzz loudly in choruses to attract females and the sound can be deafening.