Caryocolum fibigerium is a moth of the Gelechiidae family. It is found in Portugal, Spain, France, Italy, Bulgaria, Greece and Morocco. The length of the forewings is 4.5-5.5 mm for males and 4-5.5 mm for females. The forewings are blackish, mottled with dark brown. The dorsal margin is mid-brown, flecked with white. Adults have been recorded on wing in late April at lower altitudes and from July to early October in mountainous areas.