Diplommatina (Sinica) subcylindrica Möllendorff, 1882

Xie, Guang-Long, Zhang, Guoyi, Meng, Kaibaryer & Köhler, Frank, 2025, An illustrated type catalogue of Diplommatina Benson, 1849 from mainland China, with description of a new species, Diplommatina yipingica (Gastropoda, Cyclophoroidea), Zoosystematics and Evolution 101 (2), pp. 551-570 : 551-570

Diplommatina (Sinica) subcylindrica Möllendorff, 1882

Diplommatina subcylindrica Möllendorff, 1882: 349–350. – Yen, 1939: 31, pl. 2, fig. 42.

Diplommatina (Sinica) subcylindrica – Kobelt & Möllendorff, 1898: 142; Kobelt, 1902: 473; Zilch, 1953: 36.

Type material.

Lectotype SMF 39661 (Figs 7 H , 13 H ), designated by Yen (1939).

Type locality.

Yang-hu, Fudshien. The current name of the locality cannot be confirmed.

Brief description.

Shell dextral, with about 7 whorls. Protoconch smooth. Penultimate whorl slightly wider than body whorl. Constriction at middle of parietal wall. Teleoconch with weak, dense, radial ribs. Dorsal fold absent. Umbilicus unknown. Double lip present. Columellar tooth weak. One strong horizontal palatalis just above columella. One short vertical palatalis.

Remarks.

A single type specimen is known to exist. It has been referred to as the holotype and was figured by Yen (1939). However, the original description does not contain a type designation nor does it specify the number of specimens on which it is based. Therefore, Yen’s (1939) reference to the holotype is herein considered to constitute a lectotype designation in accordance with Art. 74.6 of the Code ( ICZN 1999). Kobelt and Möllendorff (1898) assigned this species to the subgenus Sinica .

Figures

Figure 7. A. Holotype of D. qinghensis IZCAS CT- 014; B. Lectotype of D. rufa, SMF 39665; C. Holotype of D. schmackeriana, SMF 40281; D. Lectotype of D. (Sinica) sculptilis, SMF 39655; E. Lectotype of D. (Sinica) setchuanensis HMT 228 a; F. Paralectotype of D. (Sinica) setchuanensis HMT 228, non- setchuanensis form A; G. Paralectotype of D. (Sinica) setchuanensis HMT 228, non- setchuanensis form B; H. Holotype of D. subcylindrica, SMF 39661; I. Holotype of D. triangulata, SMF 39672; J. Holotype of D. xiazayuensis IZCAS TM 1010000; K. Paratypes of D. xiazayuensis IZCAS TM 010045; L. Holotype of D. xingyinensis IZCAS CT- 022. Scale bar: 1 mm.

Figure 13. Parietalis of species of Diplommatina. A. D. qinghensis; B. D. rufa; C. D. schmackeriana; D. D. (Sinica) sculptilis; E. (Sinica) setchuanensis; F. D. (Sinica) setchuanensis HMT 228, not “ form A ”; G. D. (Sinica) setchuanensis HMT 228, not “ form B ”; H. D. subcylindrica; I. D. triangulata; J. D. xiazayuensis; K. D. xingyinensis; L. D. yunnanensis; M. D. elbowforis; N. D. herziana; O. D. yipingica.