Bullastra cumingiana (L. Pfeiffer, 1845)

Vinarski, Maxim V., Aksenova, Olga V. & Bolotov, Ivan N., 2020, Taxonomic assessment of genetically-delineated species of radicine snails (Mollusca, Gastropoda, Lymnaeidae), Zoosystematics and Evolution 96 (2), pp. 577-608 : 577

28. Bullastra cumingiana (L. Pfeiffer, 1845) Figs 8N ; 9P ; Table 3

Amphipeplea cumingiana Pfeiffer 1845: 68.

Amphipeplea cumingi Pfeiffer 1854-1860: 5, pl. II, figs 3, 4.

Bullastra velutinoides Bergh 1901: 254, pl. 20, figs 22-34.

Lymnaea cumingiana - Hubendick 1951: 162, fig. 355.

Bullastra cumingiana - Aksenova et al. 2018a: 4.

TL.

Philippines, island of Luzon, Naga, province of South Camerines.

Probable syntypes.

ZMB (see Vinarski 2016a for details).

Hubendick (1951) provided a description of shell, radula and genital morphology of this peculiar species. By its almost globose shell, with extremely reduced spire and extended and reflected mantle border, B. cumingiana superficially resembles M. glutinosa ; however, the alleged phylogenetic affinity between the two snails has been rejected by Hubendick (1951) and Kruglov (2005).

Two specimens of B. cumingiana originated from Lake Sampaloc (Philippines, Luzon Island; LMBI collection) were dissected during this study. The structure of the copulatory apparatus is typical for radicines. Praeputium is enlarged and widened, its length is around twice that of the penis sheath length (see Fig. 8N ). Penis sheath is short and narrow. The ICA values of the two dissected individuals were 2.11 and 2.13. Both parts of the copulatory apparatus are light-coloured.

B. cumingiana is endemic to the Philippine Islands ( Hubendick 1951).

Figures

Figure 8. Copulatory apparatuses of the species in the genera Ampullaceana, Peregriana, Kamtschaticana, Tibetoradix, Racesina, Orientogalba and Bullastra. A. Ampullaceana ampla (11.07.2017, Ukraine, Transcarpathian Region, Irshava River). B. A. balthica (Germany, Mecklenburg-Vorpommern, lake Torgelower See). C. A. dipkunensis (15.09.2016, Ukraine, Transcarpathian Region, Tisa River). D. A. fontinalis (20.08.2017, Russia, Rostov Region, Severskiy Donets River). E. A. lagotis (29.06.2016, Tajikistan, a stream in the Panj River floodplain). F. Peregriana dolgini (13.07.2015, Russia, Tyumen' Region, a floodplain of the Tol'ka oxbow). G. Peregriana peregra (01.07.2006, Russia, Omsk Region, vicinity of Chernoluchye settlement). H. Kamtschaticana kamtschatica (12.04.2014, Russia, Kamchatka Peninsula, Valley of Geysers). I. Tibetoradix hookeri (09 - 10.2012, China, Tibet, a brook, 250 km N of Lhasa). J. T. kozlovi (after Aksyonova et al. 2018 a, modified). K. Racesina oxiana (04.07.2016, Tajikistan, a roadside ditch near Kurban-Shakhid village). L. R. siamensis (24.11.2016, Myanmar, a water reservoir on the Yetho River). M. Ampullaceana relicta relicta (2005, Ohrid Lake). N. Orientogalba ollula (08.07.2010, China, Shaanxi Province, a roadside ditch near Yandi village). O. Bullastra cumingiana (Philippines, Luzon Island, Lake Sampaloc). Scale bars: 1 mm. B - after Schniebs et al. (2011), modified.

Figure 9. Shells of species of the genera Ampullaceana, Kamtschaticana, Myxas, Tibetoradix, Racesina, Orientogalba and Bullastra. A. Ampullaceana relicta relicta (05.1975, Macedonia, a spring near St. Naum monastery, Ohrid Lake region; NHMW). B. A. r. pinteri, a paratype (05.06.1973, Macedonia, Prespa Lake near Perovo; MHMW). C, D. Kamtschaticana kamtschatica (Russia, Kamchatka Peninsula, Valley of Geysers; RMBH). E. Myxas glutinosa (14.09.1963, Kazakhstan, floodplain of the Tobol River near Kustanay City; ZISP). F, G. Tibetoradix hookeri, two syntypes (NHMUK). H. T. kozlovi, the holotype (ZISP). I. Racesina luteola (India, Bengal, Paksay, Pabna; NHMUK). J. R. oxiana (04.07.2016, Tajikistan, a roadside ditch near Kurban-Shakhid village; LMBI). K. R. siamensis (" Thailand "; ZMB). L. Orientogalba viridis, a syntype (Guam Island; NMNH). M. O. ollula (1883, Japan, Yokohama; NHMUK). N. Limnaea bowelli, a type (after Preston 1909). O. Orientogalba cf. bowelli (30.06.1924, China, Tibet, Lingka, 14,500 feet a. s. l.; NHMUK). P. Bullastra cumingiana (Philippine, Cebu Island; NHMUK). Scale bars: 2 mm (C, D, F-H, L, M, O), 5 mm (A, B, E, J-K, N, P).