Diplommatina cyclostoma Möllendorff, 1897

(Figs 13, 25; Table 1)

Diplommatina (Sinica) cyclostoma Möllendorff, 1897: 95 (JaVa) . Kobelt 1902: 462. Zilch 1953: 28, pl. 12 fig. 177.

Diplommatina cyclostoma — Van Benthem Jutting 1948: 590, fig. 47.

Diplommatina auriculata —Heryanto 2008: 362 (partly, non Möllendorff, 1897). Heryanto 2009: 332 (partly, non Möllendorff, 1897).

Diplommatina sulcicollis —Heryanto 2008: 362 (partly, not Möllendorff 1897). Heryanto 2009: 332 (partly, not Möllendorff 1897).

Palaina gedeana —Heryanto 2008: 362 (partly, non Möllendorff, 1897). Heryanto 2009: 332 (partly, non Möllendorff, 1897).

Diagnosis. Diplommatina cyclostoma is characterized by the spindle shaped, very closely ribbed shell with a circular peristome.

Shell (Fig. 25; Table 1). Dextral; spindle-shaped with conical early whorls and a narrowed last whorl; with 5.5–6 whorls separated by a deep suture; protoconch smooth; teleoconch with fine, oblique ribs (84–116 on the penultimate whorl; fewer on the last whorl); without discernible spiral striae between the ribs; light corneous; subtranslucent; last whorl rounded, with an indistinct ventral constriction; aperture circular; upper insertion of peristome distinctly ascending towards aperture; insertions of the peristome connected by a distinct callus; the peristome slightly expanded, thickened, not doubled or only doubled on columellar and basal side; aperture with a low columellar lamella, which is sometimes missing; without parietal lamella; with a short spiral palatal fold ventrolaterally left inside last whorl in the middle of the whorl and with a long radial palatal fold ventrally; umbilicus closed; operculum thin, corneous, circular, paucispiral. Shell height 2.9–3.25 mm, shell diameter 1.6– 1.95 mm.

Remarks. Diplommatina cyclostoma differs from D. baliana, which was erroneously synonymized with D. cyclostoma by Vermeulen & Whitten (1998), in the larger shell with close-set ribs without discernible spiral striae between the ribs.

Habitat. In leaf litter and on the vegetation in humid forests at 2000–3000 m a.s.l.

Type material. Indonesia, Java, West Java: Cikuray (Tjikorai), 7°03'S 107°20'E (lectotype of D. cyclostoma [designated by Zilch 1953] SMF 105214; paralectotypes of D. cyclostoma SMF 105215/16).

Other material. Indonesia, Java (SMF 192583/4).—West Java: Cianjur, Kandang Badak, saddle between Mt. Pangrango and Mt. Gede, 2400 m a.s.l., 6°47'S 106°58'E (ZMA 68411/100, vouchers to van Benthem Jutting 1948); Cianjur, Mt. Pangrango near Cibodas, 2400 m a.s.l., 6°46'S 106°58'E (ZMA 68413/27, 68415/77, vouchers to van Benthem Jutting 1948); Cianjur, slope of Mt. Pangrango, 2900 m a.s.l., 6°46'S 106°58'E (ZMA 68412/16); Cianjur, Mt. Pangrango, 3000 m a.s.l., 6°46'S 106°58'E (SMF 105217/7, vouchers to Zilch 1953); Cianjur, Mt. Gede, 2500 m a.s.l., 6°47'S 106°58'E (van Benthem Jutting 1948); Cianjur, Mt. Gede, along the road between Cibeurem and Kandang Badak, 2000 m a.s.l., 6°46'S 106°59'E (ZMA 68414/1, vouchers to van Benthem Jutting 1948); Cianjur, Mt. Gede, 2300–2500 m a.s.l., 6°46'S 106°59'E (SMF 105218/9, vouchers to Zilch 1953); Garut, Mt. Cikuray, 2500 m a.s.l., 7°19'S 107°51'E (SMF 105216/1); Garut, Mt. Cikuray, 2500 m a.s.l., 7°19'S 107°51'E (SMF 105216/1); Garut, Mt. Cikuray, 2600 m a.s.l., 7°19'S 107°52'E (van Benthem Jutting 1948); Majalengka, Argamukti, Mt. Ciremai National Park, 6°54'S 108°22'E (MZB 17976/1, voucher to Heryanto 2008, 2009 [as D. sulcicollis]; MZB 17977/3, vouchers to Heryanto 2008, 2009 [as D. auriculata]); Majalengka, Argamukti, Mt. Ciremai National Park, 1735 m a.s.l., 6°54'S 108°22'E (MZB 17973/3, vouchers to Heryanto 2008 [as P. gedeana]).—Central Java: Dieng Highland, Mt. Prahu, 2500 m a.s.l., 7°11'S 109°55'E (ZMA 68410/2, vouchers to van Benthem Jutting 1948).

Distribution (Fig. 13). Diplommatina cyclostoma is endemic to West and Central Java. Records from Madura and Bali (Vermeulen & Whitten 1998) refer to D. baliana . A record from Sumatra (Heryanto 2013) is also questionable.