Leptodirus

Leptodirus hochenwartii, the narrow-necked blind cave beetle The first cave insect ever described. An assistant lamplighter, Luka Čeč, found it in Postojna Cave in 1831, and Ferdinand Schmidt named it the following year, which helped start the scientific study of cave life. It has no eyes and no pigment, a thin, stretched-out front body and a rounded abdomen where it stores food reserves, a sensible design where meals are rare. At 8 to 11 mm it is easy to miss. It depends on the steady cool temperature and high humidity of large caves and lives only in the Slovenian Karst and its surroundings, so it cannot simply move elsewhere if a cave dries out or warms.