Grossuana Radoman, 1973 from Macedonia (Greece) (Gastropoda: Truncatelloidea) with the description of three new species Author Glöer, Peter Schulstrasse 3, D- 25491 Hetlingen, Germany, email: gloeer @ malaco. de Author Reuselaars, Robert Westerwal 40, 9408 MS Assen, Netherlands, email: f 2 hreuselaa @ hetnet. nl Author Papavasileiou, Kyriakos Komninon 39, Kalamaria, Thessaloniki 55131, Greece, email: kpapav @ yahoo. com text Ecologica Montenegrina 2018 2018-03-26 17 14 19 http://dx.doi.org/10.37828/em.2018.17.2 journal article 10.37828/em.2018.17.2 2336-9744 13360645 urn:lsid:zoobank.org:pub:7BDB4115-4999-4B15-B876-F2D1184430B1 Grossuana avandasensis n.sp. ( Figs. 6-9 , Fig. 20 ) Type series. Holotype ( RMNH .MOL.339912): Shell height 1.65 mm , shell width 1.2 mm ; 12 paratypes (dried) and 10 paratypes (in ethanol, RMNH .MOL.339913) from type locality, 11 ex. in coll. Reuselaars (no. 1140), 2 ex. (dry) in coll. Glöer , 3 ex. (ethanol) coll. Falniowski. Locus typicus : well near small church west of Avandas , Prefecture of Evros , Greece . Wet place quit hidden under Platanus trees, there was no stream or real waterflow, water dried up after 4-5 m . 08.09.2017 R . E. Reuselaars leg. The specimens were collected from the leaves . Etymology : Named after Avandas town. Description : The yellowish brownish shell is ovate-conical with a prominent body whorl. The 4.5-5 whorls are fast increasing, convex with a clear suture. The aperture is ovate, slightly angled at the top. The periostome is thinkened at the columella. The umbilicus is closed. The operculum is red. The shell height is 1.5-1.7 mm , shell width 1.2 mm . The mantle is black with a light-grey border. The penis has a small triangular outgrowth at the left side near the basis ( Fig. 2.2 ). The penis-tip is long and tapered. Figures 6-9 . Grossuana avandasensis n. sp. 6: holotype, 7: penis in situ, 8-9: paratypes. Differentiating features : The shell of G . slavyanica is slimmer than G. avandaensis n. sp. and G. angeltsekovi is much larger. Only G. avandaensis n. sp. has a triangular outgrowth near the basis of the penis, also different from the Grossuana spp. described here as new.