DRUSIA (DRUSIA) IBERA (EICHWALD, 1841) (GASTROPODA: PARMACELLIDAE), THE FIRST RECORDS OF A TERRESTRIAL SLUG IN TURKEY

Abstract

The rare species Drusia (Drusia) ibera (Eichwald, 1841) (Gastropoda, Pulmonata, Parmacellidae) is reported for the first time in Turkey (Diyarbakir). Specimens studied have large, rough skin and a large granular, banded mantle with a large pneumostoma on the right of the posterior part. The body length of well-developed adults is between 10 and 12cm. The general body tone is light olive-brown (grayish with brownish hue); the large mantle has spots and conspicuous bands that converge toward the end of the mantle. One specimen was dissected for its genitalia to confirm the identity of the species. Other records of Parmacellidae from Turkey, recently posted on iNaturalist, also appear to belong to this species. The study aims to reveal the presence of D. (D.) ibera in Turkey and contribute to the Turkish slug checklist. This record brings the total of terrestrial slug species in Turkey to 49, and most are distributed in the North Anatolia region.