On 24–28 July 2025, a research team from the Endemic Indonesia Society, led by Puji Lestari , conducted a ground check of research sites for the damselfly species Drepanosticta sundana in several villages around the Menoreh karst area. This preliminary survey was conducted to gather the latest information on research locations and to initiate early communication with key stakeholders, particularly local communities involved in this research. The survey covered 24 locations, with D. sundana recorded in the majority of them. D. sundana is an endemic damselfly species found only on Java. It has very specific habitat preferences, such as areas near clear river streams in pristine forest. These preferences make it a valuable bioindicator for assessing the quality of both the rivers and the surrounding forests. In the context of Puji’s study area, D. sundana is particularly interesting to research because its habitat coincides with a malaria-endemic area. This research is being supported...