Ponsadenia (Ponsadenia) semenovi ( Martens, 1864 )

Wu, Min & Guo, Jian-Ying, 2006, Revision of the Chinese species of Ponsadenia (Gastropoda: Helicoidea, Bradybaenidae), Zootaxa 1316, pp. 57-68 : 62-63

Ponsadenia (Ponsadenia) semenovi ( Martens, 1864)

Figs. 1 B, 3A–C

Helix semenovi Martens, 1864: 115 , t. 3, fig. 6–8. Eulota semenovi Pilsbry, 1894 , 205, 249, 267. Cathaica keiseri Cockerell, 1928 , 363.

Cathaica semenovi Gude, 1902 , 53; Yen (1939, 142, pl. 14, fig. 59).

Ponsadenia (Ponsadenia) semenovi Schileyko, 1978 , 121, figs. 49–51, pl. I, fig. 7; Pl. IX, fig. 81.

Type locality: China, Tien­shan (= Tianshan in new spelling).

Material examined. HBUMM 01097E, 19 snails, 3 fully mature, with soft part in ethanol, 2 dissected. Collection data: China: Xinjiang: Kuldja, Jierlangge Village, 760 meters above sea level, (N 44° 00' 24.5'', E 081° 31' 12.6''), grassland, with limestone in sandy loam. 7th June, 2002. Coll. M. Wu & A. Ayken.

Re­description of genitalia. Membranous sac surrounding terminal genitalia absent. Penial sheath fairly long, covering about 7/8 penis. Penis about twice as long as dart sac; slender; simple outside. Penial pilasters similar, undifferentiated. Penis­epiphallus chamber absent. Epiphallic papilla absent ( Fig. 3 A). Flagellum absent. Vaginal region between dart sac and atrium long, about twice as long as dart sac ( Fig. 3 C). Proximal part of dart sac without neck­structure. Dart sac containing one dart. Dart straight, ca. 3 mm long. Accessory sac inserted into middle part of dart sac, opening toward dart chamber, with internal pilasters undifferentiated. Its distal part caecum­like, connected near to dart sac insertion on vagina by connective tissue as shown in sagittal section ( Fig. 3 C). Accessory sac seen as a bridge­like from outside of dart sac ( Fig. 3 B). Inside accessory sac, mucous gland insertion papilla absent ( Fig. 3 C). Single mucous gland; approximately as long as dart sac; with distinct peduncles; complicatedly branched. Polylayered structure absent ( Fig. 3 B).

Figures

FIGURE 3. Ponsadenia (Ponsadenia) semenovi (Martens, 1864), HBUMM 01097 E­ specimen 1. A, general view of genitalia; B, magnified bridge part of dart sac; C, sagittal section of dart apparatus.

FIGURE 1. A. Ponsadenia (Mesasiata) duplocincta (Martens, 1879), HBUMM 01116 E­ specimen 1; B. Ponsadenia (Ponsadenia) semenovi (Martens, 1864), HBUMM 01097 E­ specimen 3.