Obolopteryx castanea is a small insect belonging to the order Coleoptera, commonly known as beetles. It is characterized by its chestnut-brown coloration, which gives it its specific epithet "castanea." This species is approximately 1 centimeter in length and has a streamlined body shape, allowing it to navigate through narrow crevices and vegetation. O. castanea is primarily found in temperate forests, where it feeds on decaying plant matter and occasionally acts as a pollinator for certain plant species.