A single generation of these butterflies have flights between midsummer July until October and they can be seen throughout California at low to moderate elevations and absent geographically in desert areas (1). This species has a hook shaped antennal club with an orange hue and black tip and they also have broad-curved stripes on both hindwings and forewings with pale spots. (2) The woodland skipper is closely related to two other skipper butterflies (T. sylvestris, T. lineonla) but can easily be distinguished since O. Sylvanus is prevalent in various ecological niches such wetter, urbanized, woodland edge and sandy soil regions (3).
(1)Garth, J. S., Garth, J. S., & Tilden, J. W. (1986). California butterflies (Vol. 51). Univ of California Press. p.156
(2) Lafranchis T (2004) Butterflies of Europe. New field guide and key. Diatheo, Paris
(3) Vantieghem, P., Maes, D., Kaiser, A., & Merckx, T. (2017). Quality of citizen science data and its consequences for the conservation of skipper butterflies (Hesperiidae) in Flanders (northern Belgium). Journal of Insect Conservation, 21(3), 451-463.