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Inspired by the so appealing example of red giants, where going from ahandful of stars to thousands revealed the structure of the eigenspectrum, weinspected a large homogeneous set of around 1860 {\delta} Scuti stars observedwith CoRoT. This unique data set reveals a common regular pattern which appearsto be in agreement with island modes featured by theoretical non-perturbativetreatments of fast rotation. The comparison of these data with models andlinear stability calculations suggests that spectra can be fruitfullycharacterized to first order by a few parameters which might play the role ofseismic indices for {\delta} Scuti stars, as {\Delta \nu} and {\nu_{max}} dofor red giants. The existence of this pattern offers an observational supportfor guiding further theoretical works on fast rotation. It also provides aframework for further investigation of the observational material collected byCoRoT and Kepler. Finally, it sketches out the perspective of using {\delta}Scuti stars pulsations for ensemble asteroseismology.

What CoRoT tells us about {\delta} Scuti stars existence of a regular pattern and seismic indices to characterize stars