Cora marusae is a species of basidiolichen in the family Hygrophoraceae. Found in Mexico, it was formally described as a new species in 2019 by Bibiana Moncada, Rosa Emilia Pérez-Pérez, and Robert Lücking. The type specimen was collected on the Cerro Las Antenas (Santiago Comaltepec, Oaxaca) in a cloud forest at an altitude of . Here it grows as an epiphyte on tree trunks, often sympatrically with Cora benitoana and C. buapana. The specific epithet marusae honours Mexican lichenologist MarÃÂa de los ÃÂngeles Herrera-Campos, a friend and colleague of the authors.