Lāčupīte, Lācupe, Lūčupīte - the right tributary of Tirza in Gulbene district. Length 12 km, basin area 37 square kilometers. It flows along the Gulbene hillside of the Alūksne plateau; downstream of the Trapene plain.

The upper reaches of the river are also called Kamaldiņa. Melderupīte flows into Lāčupīte from the right bank.

The list of information source can be found here .