Lepidoptera Observed in “Uekusa Symbiotic Forest”

Abstract

A transect survey was conducted on Lepidoptera species inhabiting the “Uekusa Symbiotic Forest” at Uekusa Gakuen University, located in Wakaba Ward, Chiba City. A total of 129 species from 26 families were identified, including 35 species of butterfly and 94 species of moth. While most were common species, the survey also confirmed the presence of three species classified as endangered: Ypthima argus, Sasakia charonda, and Catocala actaea. Additionally, two non-native species, Hestina assimilis and Parasa lepida, were observed. Due to the absence of light traps, the number of moth species recorded was relatively low. However, despite the limited number of surveys, a considerable variety of butterfly species was identified. The “Uekusa Symbiotic Forest” features both managed grasslands and open woodland characteristic of satoyama landscapes, providing a suitable habitat for a diverse range of grassland and forest-dwelling species.