The stinging nettle caterpillar, Parasa lepida (Cramer), is a polyphagous pest of several commercial crops/trees widely distributed across Asia and known for inflicting painful stings through urticating hairs. Although its biology has been extensively studied in tropical and sub-tropical regions, little is known about its overwintering behavior in colder northern climates. This case study documents the overwintering of a P. lepida larva on a white fig (Ficus virens) tree in Gurugram, Haryana. Observations spanned from larval movement in mid-December 2022 to adult emergence in late May 2023, revealing a prolonged larval diapause of 136 days. Diapause initiation appeared to coincide with declining temperatures and photoperiod, while termination aligned with the onset of warmer temperatures and increasing day length. This is the first documented account of overwintering and survival of P. lepida under subtropical northern Indian conditions.