The new species Graphis collinsiae Lücking & Lumbsch is described from the Fiji Islands. The species belongs to the G. insulana aggregate and is intermediate between G. insulana (Müll. Arg.) Lücking & Sipman and G. subhiascens (Müll. Arg.) Lücking. All three species have a similar thallus and lirellae morphology and anatomy and ascospore-type, but differ in hymenial and chemical characters: G. insulana has an inspersed hymenium and contains norstictic acid, whereas G. subhiascens lacks inspersions and secondary substances. The new species, G. collinsiae, agrees with G. insulana in having an inspersed hymenium, but it lacks secondary metabolites.