**5. Moving the turret**

This action of the nymph is rarely observed, but its peculiarity makes it worthy of presentation. A turret emerges near another which later tips over and lies down on the ground. The communication with the well is either completely closed or in the process of being sealed with clay (**Figure 11a**). The hypothesis can be put forward (**Figure 11b**) that the new turret is built over a deviation made by the nymph from the exit of its well.

#### **Figure 11.**

*(a) Spontaneous reconstruction of a new turret. (b) Diagram of deviation by the nymph of the outlet of the well:*  obt*: Filling with clay of the old outlet,* dfl*: Deviation made for a new outlet,* ft: *Former turret,* nt*: New turret.*

**97**

**Figure 13.**

**Figure 12.**

*episodes, between July 19 and 23, 2016.*

*automatic camera* Brinno timelapseTLC200 Pro*).*

*The Nymph Architect of the Cicada* Guyalna chlorogena*: Behaviours and Ecosystem*

A correlation has been established [2] and confirmed later (Béguin, Gama and Ribamar Mesquita Ferreira, to be published) between the appearance of intense rains and the simultaneous temporary opening of the turrets at their top. A succession of 3 episodes, between July 19 and 23, 2016, turned out to be particularly significant; many openings (**Figure 12**) appeared, which were then closed when the precipitation stopped (**Figure 13**). The openings vary in shape, from a small hole about 5 mm in diameter (**Figure 12a**) to a larger opening where the contour of the clypeus, eyes or anterior part of the pronotum (**Figure 12b**) can frequently

*Correlation between intense rainfalls (////) and temporary and simultaneous opening of 35 turrets, during 3* 

*(a) Circular orifice resulting from a slight pressure of the mass of soggy clay against the wall of the summit. (b) Orifice with imprint of clypeus (cly) and pronotum (pro) covered with soggy clay. (c–f) occlusion of the orifice shown in Figure 12a after end of rainfall, by injection of soggy clay (captured images with the* 

*DOI: http://dx.doi.org/10.5772/intechopen.94106*

**6. Role of the turret**

*The Nymph Architect of the Cicada* Guyalna chlorogena*: Behaviours and Ecosystem DOI: http://dx.doi.org/10.5772/intechopen.94106*
