Ptelea is a village in the northern part of the Evros regional unit, Greece. It is part of the municipal unit of Trigono. In 2001 its population was 477. It is located on the right bank of the river Evros, where it forms the border with Bulgaria. It is bypassed by the Greek National Road 51/E85 (Alexandroupoli - Orestiada - Ormenio - Svilengrad). The town was formerly known as Karagatsoudi (Καραγατσούδι) and El-Karakas (Ελ-Καράκας), its Turkish name was Karaagaç.