Neoperla lamesae: New stonefly species discovered in La Mesa Watershed

May 6, 2026 - 8:00 AM
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Scientists discover new stonefly species in La Mesa Watershed Reservation. (DENR-NCR via Facebook)

Scientists have identified a new species of stonefly in the La Mesa Watershed Reservation (LMWR), the Department of Environment and Natural Resources–National Capital Region (DENR-NCR) reported.

The species, named Neoperla lamesae, was discovered by researchers Jondemarco Ricafort, Arthien Pelingen, Ian Fontanilla, Yeon Jae Bae and Christine Uy-Yabut from the University of the Philippines-Diliman, the Korea University and the University of Otago in New Zealand.

According to the DENR-NCR, Neoperla lamesae is an aquatic insect belonging to the Order Plecoptera (stoneflies) and family Perlidae. It spends much of its life underwater as a nymph and is considered an important bioindicator of clean water.

Due to its sensitivity to pollution, the presence of stoneflies indicates high water quality, sufficient oxygen levels and the absence of contamination. The agency described them as a “natural sensor” of ecosystem health.

Beyond its role as a water reservoir, the DENR-NCR said the LMWR serves as a vital refuge for biodiversity and a “living laboratory” that continues to yield new scientific knowledge despite urbanization.

“It is a significant achievement for science and conservation,” the DENR-NCR said.

The agency also encouraged students, researchers and environmental advocates to conduct further studies within the watershed to deepen understanding of natural resources and strengthen conservation efforts.

—With Adrian Parungao