1980] 
Young — Ecology of Cicadas 
181 
Fig. 4. The forest habitat along the secondary road going to the bottom of the 
ravine. Cicadas such as Fidicina sericans, F. mannifera, and two species of Carineta 
are heard in the trees along this road. 
group of a patch of forest slope where this species emerges, the other 
on a level area adjacent to the Sarapiqui River. The skins in each 
group were randomly distributed (by throwing) within a one-meter 
square area of ground. The numbers of skins remaining in each plot 
were then checked in June and July 1973. 
Results 
The six species of cicadas found and studied at Cuesta Angel are 
shown in Fig. 5, and they are: Zammara tympanum Distant, 
Fidicina sericans Stal, Fidicina “new species” (n.sp.), a new species, 
Fidicina mannifera Fabricius, Carineta postica Walker, and Cari- 
neta sp. Three of these, Z. tympanum, F. sericans, and F. manni- 
fera, are large-bodied cicadas with very loud calls, while F. n.sp. is 
medium-sized, and the two species of Carineta are considered small- 
sized (or at the low end of the medium-size range), the latter two 
