Diplommatina nevilli ( Crosse, 1879 )

Hausdorf, Bernhard, 2017, Revision of the Diplommatinidae (Gastropoda: Cyclophoroidea) from Java, Zootaxa 4312 (2), pp. 201-245 : 225-226

Diplommatina nevilli ( Crosse, 1879)

( Figs 16 , 38 ; Table 1)

Palaina nevilli CroSSe, 1879: 203, 339, pl. 8 fig. 2 (Perak, MalaySia).

Diplommatina (Sinica) nevilli — Kobelt 1902: 467.

Diplommatina nevilli — Laidlaw 1949: 202, fig. 2c. Vermeulen & Whitten 1998: 50, 138, fig 29. MaaSSen 2002: 171, fig. 15– 16. NurinSiyah 2015: 32. NurinSiyah et al. 2016: 559.

Diagnosis. Diplommatina nevilli is characterized by a small-sized shell without distinct extensions of the peristome, a low columellar lamella and widely spaced, perpendicular ribs.

Shell ( Fig. 38 ; Table 1). Dextral; spindle-shaped with conical early whorls and a slightly narrowed last whorl; with 6.25–7.5 whorls separated by a deep suture; protoconch smooth; teleoconch with perpendicular ribs (23–32 on the penultimate whorl; approximately the same number on the last whorl); with discernible spiral striae between the ribs; whitish; subtranslucent; last whorl rounded, with an indistinct ventral constriction; aperture subangular, angular at the transition from columellar to basal side; upper insertion of the peristome ascending towards aperture; insertions of the peristome connected by a distinct callus; peristome distinctly expanded, thickened, doubled; aperture with a low columellar lamella; with a parietal lamella, a short spiral palatal fold in the middle of the whorl and a long radial palatal fold ventrally inside the last whorl; umbilicus closed; operculum thin, corneous, circular, paucispiral. Shell height 2.25–2.9 mm, shell diameter 1.05–1.3 mm.

Remarks. This species is most similar to D. canaliculata , from which it differs in the smaller, more slender shell (shell height 2.25–2.9 mm versus 3.05–3.45 mm) with a low columellar lamella and less distinct extensions at the peristome.

Habitat. In leaf litter and on the vegetation in primary and secondary forests on calcareous soils at 6–260 m a.s.l.

Material. Indonesia, Java, Central Java: Pati, Larangan Village, Lanang Spring , 100 m a.s.l., 6°54'19"S 111°03'22"E ( MZB 18835/1, voucher to Nurinsiyah 2015).— East Java: Malang , Kedungsalam , agoforestry, 260 m a.s.l., 8°20'24"S 112°26'29"E ( MZB 18836/1, voucher to Nurinsiyah et al. 2016); Malang , Kondangmerak , teak plantation, 63 m a.s.l., 8°23'17"S 112°31'01"E ( MZB 18837/1, voucher to Nurinsiyah et al. 2016); Malang , Kondangmerak , nature forest, 51 m a.s.l., 8°23'22"S 112°31'02"E ( MZB 18797/10; ZMH 133006 /5, vouchers to Nurinsiyah et al. 2016); Malang, Kondangmerak, nature forest, 57 m a.s.l., 8°23'30"S 112°31'03"E ( MZB 18795/ 12; ZMH 133004 /8, vouchers to Nurinsiyah et al. 2016); Malang, Kondangmerak, teak plantation, 65 m a.s.l., 8°23'16"S 112°31'03"E ( MZB 18801/20; ZMH 133010 /10, vouchers to Nurinsiyah et al. 2016); Malang, Kondangmerak, nature forest, 54 m a.s.l., 8°23'22"S 112°31'04"E ( MZB 18799/46; ZMH 133008 /20, vouchers to Nurinsiyah et al. 2016); Malang, Kondangmerak, nature forest, 100 m a.s.l., 8°23'21"S 112°31'05"E ( MZB 18798/ 25; ZMH 133007 /10, vouchers to Nurinsiyah et al. 2016); Malang, Kondangmerak, nature forest, 67 m a.s.l., 8°23'30"S 112°31'08"E ( MZB 18794/6; ZMH 133003 /1, vouchers to Nurinsiyah et al. 2016); Malang, Kondangmerak, nature forest, 33 m a.s.l., 8°23'48"S 112°31'14"E ( MZB 18796/15; ZMH 133005 /6, vouchers to Nurinsiyah et al. 2016); Malang, Kondangmerak, riverbanks, 29 m a.s.l., 8°23'44"S 112°31'21"E ( MZB 18838/1, voucher to Nurinsiyah et al. 2016); Malang, Kondangmerak, near spring, 33 m a.s.l., 8°23'35"S 112°31'25"E ( MZB 18839/1, voucher to Nurinsiyah et al. 2016); Malang, Sempu Island , Semut Hill Bay , 50 m a.s.l., 8°26'33"S 112°41'07"E ( MZB 18800/3; ZMH 133009 /2); Jember, Nusa Barung Island , a bay next to Jeruk Bay , 6 m a.s.l., 8°28'00"S 113°24'27"E ( RMNH 44526 /10).

Distribution ( Fig. 16 ). Diplommatina nevilli is known from Peninsular Malaysia ( Crosse 1879; Laidlaw 1949), Singapore ( Ho 1995), Sumatra ( Maassen 2002), Java and Bali ( Vermeulen & Whitten 1998).

Figures

FIGURES 15 – 19. DiStribution of Diplommatinidae in JaVa. 15. Diplommatina baliana Fulton, 1899. 16. Diplommatina diplostoma RenSch, 1931, Diplommatina nevilli (CroSSe, 1879) and Diplommatina canaliculata Möllendorff, 1887. 17. Diplommatina auriculata Möllendorff, 1897. 18. Palaina gedeana Möllendorff, 1897, Palaina nubigena Möllendorff, 1897 and Arinia yanseni n. sp. 19. Opisthostoma javanicum Van Benthem Jutting, 1932, Opisthostoma uranoscopium Van Benthem Jutting, 1932 and Opisthostoma sp.

FIGURES 38 – 40. Diplommatina Spp. from JaVa. 38. Diplommatina nevilli (CroSSe, 1879), EaSt JaVa: Malang, Kondangmerak, nature foreSt (MZB 18796). 39. Diplommatina canaliculata Möllendorff, 1887, WeSt JaVa: Ciampea, Mt. CibodaS (holotype of D. ornithorica ZMA 135961). 40. Diplommatina canaliculata Möllendorff, 1887, MalaySia: Malakka, Bukit Pondong, Perak (holotype SMF 105394). Scale bar = 1.0 mm.