This species is threatened by destruction and modification of its native forest habitat. This species was apparently able to survive the burning of much of the forest during World War II (Hinz 1995, Crombie and Pregill 1999), however review of additional data from museum collections is needed to better understand how widespread the species was before WWII (e.g. based on the 1936 collections of Y. Kondo at the Bishop Museum in Hawaii), and whether the species has declined in the interim period. It is possible that the species was able to survive the substantial vegetation destruction and changes of WWII (Crombie and Pregill 1999) because it is found primarily on the ground in limestone karst, and was therefore able to hide deep in moist crevices while vegetation returned to the island (e.g. as might occur in the Rock Islands of Belau during temporary drought periods; Colin 2009). This phenomenon is distinct from irreversible habitat change events (e.g. building a hotel on or near the limestone karst forest), from which most Palau species with similarly restricted ranges could not recover. The localities where this species occurs are low elevation areas near permanent human habitation and are susceptible to land alteration for developments.
Rats such as Rattus norvegicus (Norway Rat), Rattus rattus (Ship Rat), and Rattus exulans (Polynesian Rat) represent a threat to the species. These species can be introduced and repeatedly re-introduced (by boat) by humans, but can also cross water independently. There are no known indigenous predatory land snails in Palau, and indigenous Palau species have evolved in the absence of such predation pressures. Euglandina rosea (Spiraxidae), Gonaxis kibweziensis and Gulella bicolor (Streptaxidae) have been introduced to Palau within the past 100 years (Cowie et al. 1996), and throughout the Pacific. Euglandina rosea and Gonaxis spp. in particular have been introduced in ill-conceived attempts at biocontrol for Achatina fulica (Meyer et al. 2008). Of these non-indigenous predatory species, Gulella bicolor was found by Cowie (Cowie et al. 1996) and Rundell (R.J. Rundell unpublished data, 2003, 2005, 2007). Although Euglandina rosea was not found, the presence of Achatina fulica (an agricultural pest) in Palau, particularly on the islands of Koror and Babeldaob (R.J. Rundell unpublished data, 2003, 2005, 2007) means that agricultural areas on these islands (e.g. Airai State) may be subject to renewed biocontrol attempts in the future, and vigilance is necessary regarding the potentially devastating consequences of E. rosea re-introductions. Note that accidental introductions (and distribution to different localities) are likely, as a result of transportation of soil and organic debris (where snail eggs may be present), plants and produce.