Rare earth elements (REE) group include La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc, and Y, classified as critical raw materials in several countries due to their important use in technology such as in super magnets and electric motors. Their extensive use has resulted in their introduction into environmental compartments such as soil and surface waters. Therefore, monitoring the concentration of these elements in terrestrial organisms, such as insects, can be an effective tracer for anthropogenic alterations in natural environments. Inductively coupled plasma mass spectrometry (ICP-MS) coupled to a desolvation system, such as ultrasonic nebulization (USN) is one of the main analytical techniques for determining REE and a powerful sample preparation method is generally necessary to achieve suitable results. In this sense, microwave-assisted wet digestion with electrodeless MW-excited discharge UV lamps (MAWD-UV) allows the digestion of complex samples using diluted acids. In this study a MAWD-UV method was developed for the digestion of crickets, followed by the determination of REEs using USN-ICP-MS. For the development of this work, three samples of crickets (Acheta domesticus) from different origins (Brazil, China, and Thailand) were used. For the development of MAWD-UV method, a Multiwave PRO® system (Anton Paar, Austria) equipped with eight 80 mL quartz vessels with Cd low-pressure discharge microwave lamps was used. Parameters such as the agreement of the results with a conventional MAWD reference method with concentrated HNO₃, carbon content on solution, and residual acidity were used for the proposed method evaluation. Agreement values higher than 90% for all REE were observed using 3 mol L^-1 HNO₃ with 0.8 mol L^-1 HCl. On the digestion of the CRM BCR-668 (mussel tissue) on these conditions, no significant differences (95% confidence level) were observed between the observed and certified values for all REE. One remarkable aspect of the MAWD-UV with diluted acids is lower values for limits of detection (LOD) compared to the reference method. For Ce, the LOD decreased from 169 to 37 ng g^-1, and for Eu the LOD decreased from 1.1 to 0.15 ng g^-1. Therefore, the developed method allowed the determination of REE in cricket samples at lower concentrations and in greener conditions due to the use of diluted acids.