Continuous spin superparticle in 4D, N=1 curved superspace

We present a new particle model that describes the dynamics of a 4D, N=1 continuous spin particle in AdS4 superspace and is a generalization of the continuous-spin superparticle model in flat 4D, N=1 superspace proposed in 2506.19709 [hep-th]. The model is described by 4D, N=1 superspace coordinates together with commuting spinor additional variables, which are inherent ingredients of continuous spin models. The Lagrangian and the system of four bosonic and four fermionic phase space constraints are derived. The consistency condition for constraints imposes a restriction on supergeometry to be AdS superpace. It is shown that the bosonic constraints are first-class constraints. A covariant procedure based on the use of additional variables is developed to divide the four fermionic constraints into first and second classes. It is proved that, unlike the flat case, only one fermionic constraint is a first-class constraint, while the other three are second-class constraints. In the flat limit, one of these second-class constraints becomes a first-class one.