Termitomyces arjunii, a Novel Termitophilic Agaric from a Private Organic Garden in Mapusa, Goa, India

Termitomyces arjunii Kamat, Gupte & Gupte, sp. nov. is described from a single basidiocarp collected at a private organic garden in Karaswada, Mapusa, Goa, India, in close association with the co-occurring Termitomyces heimii population documented at this site (Kamat et al., 2026). The pileus is small, 2.7-3 cm diameter, buff to desert-tan (Orange and Brown dominant hues, Section 4), with a central umbo bearing a knobby, irregular, dark brown to blackish melanized perforatorium - the drilling organ through which the basidiocarp emerges through the termite mound substrate and overlying soil - its surface frequently bearing adherent soil particles bound by a viscous, colourless extracellular bioglue secreted during drilling. Lamellae are emarginate, crowded, pale pink to buff-pink, attached to a diagnostically narrow (