The light rare-earth nuclei near N = 90, are textbook examples (Refs. 1-10) of the evolution of nuclear structure with excitation energy and angular momentum. They display a variety of different phenomena, such as, multiple backbends, dramatic prolate to oblate shape changes associated with band termination plus a spectacular return to collectivity extending discrete gamma-ray spectroscopy into the so-called ``ultrahighspin regime`` (I = 50-70). Band termination represents a clear manifestation of mesoscopic physics, since the underlying finite-particle basis of the nuclear angular momentum generation is revealed. In 158Er, terminating states at values Ip = 40+, 43-, 46+ , 48−, and 49−, have been observed, Other neighbouring nuclei have also been found to exhibit similar fully aligned states providing stringent tests of nuclear models since the wavefunctions for these special states are extremely pure. The present work has been triggered by a comprehensive high-spin analysis of data from Gammasphere on 157Ho90 which showed remarkable similarities to the known band termination states in 158Er90. A systematic analysis of favoured band terminations in neighboring nuclei has subsequently been carried out and will be discussed. [1] Szymanski Z 1983 Fast Nuclear Rotation (Clarendon Press, Oxford, England) [2] Ring P and Schuck P 1980 The Nuclear Many-Body Problem (Springer-Verlag, Heidelberg) [3] Krane K S 1988 Introductory Nuclear Physics (John Wiley and Sons, New York) [4] Ejiri H and de Voigt M J A 1989 Gamma-Ray and Electron Spectroscopy in Nuclear Physics (Clarendon Press) [5] Nilsson S G, Ragnarsson I 1995 Shapes and Shells in Nuclear Structure (Cambridge University Press, Cambridge, England) [6] Heyde K 1999 Basic Ideas and Concepts in Nuclear Physics (Institute of Physics, Bristol) [7] Pancholi S C 2011 Exotic Nuclear Excitations (New York: London: Springer, - Springer tracts in modern physics) [8] Casten R F 2001 Nuclear Structure from a Simple Perspective (Oxford Studies in Nuclear Physics, Oxford University Press; 2 edition) [9] Wang X, Riley M A, Paul E S and Simpson J 2013 McGraw-Hill Yearbook of Science and Technology (McGraw-Hill) [10] by Zelevinsky V and Volya A 2017 Physics of Atomic Nuclei (Wiley_VCH).