Insect research has significantly advanced neuroscience by addressing fundamental questions, with groundbreaking discoveries emerging from research carried out in Uruguay. Powered by technological advances, the field has seen milestones in ultrastructure, neuronal and synaptic structure, and complex behavioral findings. Key contributions include the first formal description of chemical synapses, the identification of synaptic vesicle origins in the endoplasmic reticulum, and pioneering work on eye induction and development. Uruguay's research has also provided critical insights into neural degeneration and repair mechanisms, the functional microanatomy of the visual pathway, and mechanoreception. This review highlights four decades of Uruguayan legacy in insect neuroscience, underscoring how a small, yet vibrant, community of researchers has embraced interdisciplinary collaborations and innovative methodologies. Additionally, this review addresses the evolving role of women in the field and the collaborative spirit that has propelled scientific discovery, marking a critical juncture in the development of insect neuroscience. Despite limited resources, Uruguay has played a pivotal role in advancing our understanding of brain organization, neuronal-glial interactions, and connectomics, making lasting contributions to both local and global neuroscience.