A living guide to Kauaʻi

Shells, Snails & Other Mollusks of Kauaʻi

Explore the island’s native and introduced species, habitats, watersheds and conservation work. Each record connects its description, images and sources with the interactive Atlas.

Page 4 of 6

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  Nesopupa alloia

  Nesopupa alloia

  The Bishop Museum Hawaii Biological Survey taxon page explicitly includes Kauai in the island distribution. MolluscaBase/WoRMS AphiaID 1508979 was inspected: source name Nesopupa alloia; status accepted; accepted name Nesopupa alloia. WoR

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  Nesopupa infrequens

  Nesopupa infrequens

  The Bishop Museum Hawaii Biological Survey taxon page explicitly includes Kauai in the island distribution. MolluscaBase/WoRMS AphiaID 1489033 was inspected: source name Nesopupa infrequens; status accepted; accepted name Nesopupa infreque

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  Nesopupa newcombi

  Nesopupa newcombi

  Bishop Museum HBS island checklist pages for N. newcombi subspp. angusta, gnampta, and the source concept N. seminulum explicitly list Kauai. WoRMS AphiaID 1490465 accepts Nesopupa newcombi; source subspecies are collapsed only at species

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  Nesopupa wesleyana

  Nesopupa wesleyana

  Bishop Museum HBS pages for N. wesleyana subspp. rhadina and tryphera explicitly list Kauai. WoRMS AphiaID 1508992 accepts Nesopupa wesleyana; subspecies are rolled up only to the accepted species. Terrestrial taxon; marine depth filter d

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  Nodolatirus nodatus

  Nodolatirus nodatus

  The NOAA-hosted HCRI Final Report records Latirus nodatus in the Kauai row at reef-assessment station RA6. WoRMS AphiaID 732677 accepts Nodolatirus nodatus and provides the bridge from Latirus nodatus. HCRI is a shallow coral-reef assessm

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  Granulated cowry

  Nucleolaria granulata

  Bishop Museum Technical Report 29a table records Cypraea granulata at Kauaʻi station Ka2; 2017 and 2024 Kauaʻi observations corroborate persistence. WoRMS AphiaID 570727 accepts Nucleolaria granulata and bridges Cypraea granulata. TR29a c

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  Odostomella patricia

  Odostomella patricia

  Bishop Museum Technical Report 29a records source name Herviera patricia at Kauaʻi stations Ka2 and Ka4. WoRMS AphiaID 739565 accepts Odostomella patricia and bridges Herviera patricia. TR29a documents harbors and nearby coral reefs; both

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  Dwarf awlsnail

  Opeas hannense

  Bishop Museum Occasional Paper 50 codes the species N,K,O,H and states Kauaʻi material is held in Bishop Museum collections under the synonym goodalli. Fresh WoRMS query accepts Opeas hannense (AphiaID 875201); OP50 gives the goodallii/pum

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  Opeas opella

  Opeas opella

  Bishop Museum Occasional Paper 50 codes K and states Kauaʻi records are based on Bishop Museum collection material. Fresh WoRMS query accepts Opeas opella (AphiaID 1508962). Terrestrial taxon; marine depth filter does not apply. The auth

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  Orientogalba viridis

  Orientogalba viridis

  Bishop Museum Occasional Paper 50 codes N,K,O,Mo,M,H, lists first record about 1890 and status Established. Fresh WoRMS query accepts Orientogalba viridis (AphiaID 1062655); OP50 documents the Fossaria/Lymnaea viridis and ollula treatment.

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  Oswaldius jugosus

  Oswaldius jugosus

  Bishop Museum HBS checklist page for source name Cookeconcha jugosa explicitly lists Kauai. WoRMS AphiaID 1903891 accepts Oswaldius jugosus, bridging Cookeconcha jugosa. Terrestrial taxon; marine depth filter does not apply. An authorita

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  Oxychilus alliarius

  Oxychilus alliarius

  Bishop Museum Occasional Paper 50 codes K,Mo,M,H, states Bishop Museum material underlies the 1937 record, and lists Status: Established. Fresh WoRMS query accepts Oxychilus alliarius (AphiaID 1050554). Terrestrial taxon; marine depth fil

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  Pacificella baldwini

  Pacificella baldwini

  Bishop Museum HBS checklist page for Pacificella baldwini subsp. baldwini explicitly lists Kauai. Fresh WoRMS query accepts Pacificella baldwini (AphiaID 1486116); the subspecies is rolled up only to species rank. Terrestrial taxon; marin

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  Pandalosia ephamilla

  Pandalosia ephamilla

  Bishop Museum Technical Report 29a records source name Schwartziella ephamilla at Kauaʻi station Ka2. WoRMS AphiaID 879705 accepts Pandalosia ephamilla, bridging Schwartziella ephamilla. TR29a covers harbors and nearby coral reefs; Ka2 is

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  Parashiela ambulata

  Parashiela ambulata

  Bishop Museum Technical Report 29a records source name Parashiela beetsi at Kauaʻi station Ka4. WoRMS AphiaID 535725 accepts Parashiela ambulata; the source synonym is bridged by the authority record. TR29a covers harbors and nearby coral

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  Paropeas achatinaceum

  Paropeas achatinaceum

  Bishop Museum OP50 codes K,O,Mo,M,H and the HBS species page separately lists Kauai. Fresh WoRMS query accepts Paropeas achatinaceum (AphiaID 875230); OP50 also treats Opeas henshawi as a junior synonym. Terrestrial taxon; marine depth fi

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  Phidiana semidecora

  Phidiana semidecora

  Sea Slugs of Hawaii includes Kauai and documents a specimen photographed at Poipu State Park, Kauaʻi, on 2010-05-04; a 2010 observation corroborates. Fresh WoRMS query accepts Phidiana semidecora (AphiaID 599302), bridging Facelinella semi

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  Philonesia arenofunus

  Philonesia arenofunus

  Bishop Museum HBS checklist page explicitly lists Kauai. Fresh WoRMS query accepts Philonesia arenofunus (AphiaID 1422847). Terrestrial taxon; marine depth filter does not apply. Authoritative island checklist and accepted taxonomy verif

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  Philonesia chamissoi

  Philonesia chamissoi

  Bishop Museum HBS checklist page explicitly lists Kauai. Fresh WoRMS query accepts Philonesia chamissoi (AphiaID 1422946). Terrestrial taxon; marine depth filter does not apply. Authoritative island checklist and accepted taxonomy verify

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  Philonesia kauaiensis

  Philonesia kauaiensis

  Bishop Museum HBS checklist page explicitly lists Kauai. Fresh WoRMS query accepts Philonesia kauaiensis (AphiaID 1422854). Terrestrial taxon; marine depth filter does not apply. Authoritative island checklist and accepted taxonomy verif

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  Philonesia turgida

  Philonesia turgida

  Bishop Museum HBS checklist page for Philonesia turgida subsp. diducta explicitly lists Kauai. Fresh WoRMS query accepts Philonesia turgida (AphiaID 1423169); the subspecies is rolled up only to species rank. Terrestrial taxon; marine dep

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  Phyllidia varicosa

  Phyllidia varicosa

  TR29a records Phyllidia varicosa at Kauaʻi stations Ka2 and Ka4; the HCRI reef report independently records it and 2025 photographs corroborate. WoRMS AphiaID 212835 accepts Phyllidia varicosa. Primary reports are coastal/reef surveys; ex

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  Physella acuta

  Physella acuta

  Bishop Museum OP50 lists Physa virgata only from K (Kauaʻi), first formally recorded in 1994, and Status: Established. Fresh WoRMS query accepts Physella acuta (AphiaID 234093) and treats Physa virgata as a junior subjective synonym (Aphia

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  Bearded hoof shell

  Pilosabia trigona

  TR29a records source name Hipponix pilosus at Kauaʻi stations Ka1, Ka2 and Ka3; 2022 and 2024 observations corroborate. WoRMS AphiaID 716495 accepts Pilosabia trigona and resolves the source-name treatment. TR29a stations are Kauaʻi harbo

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  Planaxis suturalis

  Planaxis suturalis

  Bishop Museum TR29a records Planaxis suturalis at Kauaʻi stations Ka2 and Ka4. WoRMS AphiaID 596980 accepts Planaxis suturalis. TR29a covers harbors and nearby coral reefs; both station records are coastal and in scope. Primary Kauaʻi co

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  Seminole rams horn

  Planorbella duryi

  Bishop Museum OP50 lists Planorbella duryi only from K (Kauaʻi), first formally recorded in 1994, and Status: Established. Fresh WoRMS query accepts Planorbella duryi (AphiaID 1001496). Freshwater taxon; marine depth filter does not apply

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  Pomacea canaliculata

  Pomacea canaliculata

  Hawaiʻi DLNR AIS explicitly states Kauai: Present; Bishop Museum OP96 reports Hanalei NWR/taro-field expansion with vouchered Kauaʻi material, and later observations corroborate. WoRMS AphiaID 741113 accepts Pomacea canaliculata. Freshwat

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  Pomacea diffusa

  Pomacea diffusa

  Bishop Museum OP96 states P. diffusa was recorded from Kauaʻi (historically as P. bridgesii), but was not found in the 2004–2006 survey or other recent surveys. Fresh WoRMS query accepts Pomacea diffusa (AphiaID 848365); OP96 supplies the

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  Pronesopupa admodesta

  Pronesopupa admodesta

  Bishop Museum HBS checklist page explicitly lists Kauai. Fresh WoRMS authority record accepts Pronesopupa admodesta (AphiaID 1497910). Terrestrial taxon; marine depth filter does not apply. Authoritative checklist and accepted taxonomy v

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  Pronesopupa boettgeri

  Pronesopupa boettgeri

  Two Bishop Museum HBS pages for subspp. boettgeri and spinigera explicitly list Kauai. Fresh WoRMS authority record accepts Pronesopupa boettgeri (AphiaID 1497902); subspecies are rolled up only to species rank. Terrestrial taxon; marine

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  Pronesopupa hystricella

  Pronesopupa hystricella

  Bishop Museum HBS checklist page explicitly lists Kauai. Fresh WoRMS authority record accepts Pronesopupa hystricella (AphiaID 1497900). Terrestrial taxon; marine depth filter does not apply. Authoritative checklist and accepted taxonomy

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  Pronesopupa incerta

  Pronesopupa incerta

  Bishop Museum HBS checklist page explicitly lists Kauai. Fresh WoRMS authority record accepts Pronesopupa incerta (AphiaID 1497925). Terrestrial taxon; marine depth filter does not apply. Authoritative checklist and accepted taxonomy ver

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  Pseudisidora producta

  Pseudisidora producta

  The 2021 peer-reviewed review reports three Pseudisidora producta recorded since 2015 from a single location on Kauai; Bishop Museum checklist independently supports the island. Fresh WoRMS query accepts Pseudisidora producta (AphiaID 1480

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  Pseudisidora rubella

  Pseudisidora rubella

  Bishop Museum HBS checklist for Lymnaea rubella explicitly lists Kauai; the 2021 review recognizes the species but places the recently recorded other sinistral population on Oʻahu, not Kauaʻi. Fresh WoRMS query accepts Pseudisidora rubella

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  Ptychopatula dioscoricola

  Ptychopatula dioscoricola

  Bishop Museum OP50 codes K,O,Mo,M,H and states first record was based on Bishop Museum collections; Status is Unknown. Fresh WoRMS query treats Pupisoma orcula as a junior subjective synonym of accepted Ptychopatula dioscoricola (AphiaID 8

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  Hawaiian fringed cowry

  Purpuradusta fimbriata

  TR29a records Cypraea fimbriata at Kauaʻi station Ka4; 2018 and 2025 observations corroborate. WoRMS AphiaID 390567 accepts Purpuradusta fimbriata and bridges Cypraea fimbriata. TR29a is a harbor/nearby-reef survey and Ka4 is in-scope coa

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  Randallius hystricellus

  Randallius hystricellus

  Bishop Museum HBS checklist page for source name Cookeconcha hystricella explicitly lists Kauai. Fresh WoRMS query accepts Randallius hystricellus (AphiaID 1903890), bridging the source combination. Terrestrial taxon; marine depth filter

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  Rastodens brevilabiosa

  Rastodens brevilabiosa

  Bishop Museum TR29a records Rastodens brevilabiosa at Kauaʻi station Ka2. Fresh WoRMS query accepts Rastodens brevilabiosa (AphiaID 571575). TR29a covers Kauaʻi harbors and nearby coral reefs; Ka2 is in-scope coastal evidence. Primary Ka

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  Rochefortina sandwichensis

  Rochefortina sandwichensis

  Bishop Museum TR29a records Rochefortina sandwichensis at Kauaʻi station Ka4; a 2018 Kauaʻi observation corroborates. WoRMS AphiaID 507280 accepts Rochefortina sandwichensis; an author-citation discrepancy does not alter the unique species

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  Sabia australis

  Sabia australis

  TR29a records source name Hipponix australis at Kauaʻi station Ka4; the HCRI report independently records it in the Kauaʻi reef assessment. WoRMS AphiaID 598647 accepts Sabia australis and bridges Hipponix australis. Both primary sources

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  Schwartziella triticea

  Schwartziella triticea

  Bishop Museum Technical Report 29a appendix table (PDF p.109/printed p.101) records Schwartziella triticea at Kauaʻi station Ka2; methods identify Ka2 as Nawiliwili Harbor and document the October 2002 survey. WoRMS/MolluscaBase AphiaID 59

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  Simulamerelina hewa

  Simulamerelina hewa

  TR29a appendix (PDF p.108/printed p.100) records Merelina hewa at Kauaʻi stations Ka2 and Ka4. WoRMS/MolluscaBase AphiaID 597899 accepts Simulamerelina hewa; Merelina hewa is the source combination. Ka2 is Nawiliwili Harbor and Ka4 Port A

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  Siphonaria normalis

  Siphonaria normalis

  TR29a appendix (PDF p.124/printed p.116) records Siphonaria normalis at Kauaʻi stations Ka1 and Ka3. WoRMS/MolluscaBase AphiaID 215294 accepts Siphonaria normalis. Ka1 Nāwiliwili Small Boat Harbor and Ka3 Poʻipū reef are intertidal/nearsh

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  Siphopteron flavum

  Siphopteron flavum

  Sea Slugs of Hawaiʻi explicitly lists Kauaʻi and documents a photographed 5 mm animal at Kēʻē Beach, Kauaʻi, on 2014-05-08. WoRMS/MolluscaBase AphiaID 599452 accepts Siphopteron flavum; the expert account notes the historical combination G

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  Siphopteron quadrispinosum

  Siphopteron quadrispinosum

  Sea Slugs of Hawaiʻi explicitly includes Kauaʻi in its distribution; a 2023 iNaturalist Kauaʻi claim corroborates but was not independently image-reviewed. WoRMS/MolluscaBase AphiaID 599458 accepts Siphopteron quadrispinosum. Expert accou

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  Sistrum ricinus

  Sistrum ricinus

  NOAA HCRI report records source-name Drupa ricina from Kauaʻi reef work; 2018 Kauaʻi community observations corroborate continued occurrence. WoRMS/MolluscaBase AphiaID 215769 accepts Sistrum ricinus and provides the bridge from Drupa rici

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  Skenella conica

  Skenella conica

  TR29a appendix (PDF p.105/printed p.97) records Rufodardanula conica at Kauaʻi stations Ka2 and Ka4. WoRMS/MolluscaBase AphiaID 592417 accepts Skenella conica; Rufodardanula conica is the source combination. Ka2 Nawiliwili Harbor and Ka4

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  Smaragdinella calyculata

  Smaragdinella calyculata

  Sea Slugs of Hawaiʻi explicitly lists Kauaʻi; candidate also cites dated Kauaʻi community observations from 2003 and 2022. WoRMS/MolluscaBase AphiaID 590786 accepts Smaragdinella calyculata; expert account identifies Smaragdinella viridis

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  Spurilla braziliana

  Spurilla braziliana

  Sea Slugs of Hawaiʻi explicitly includes Kauaʻi in distribution; a 2026 Kauaʻi community observation corroborates occurrence. WoRMS/MolluscaBase AphiaID 141634 is the cited authority record; expert account notes historical misapplication a

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  Stenoplax petaloides

  Stenoplax petaloides

  TR29a appendix records source-name Ischnochiton petaloides at a Kauaʻi survey station. WoRMS/MolluscaBase AphiaID 386601 is the cited accepted record for Stenoplax petaloides, bridging the source combination. TR29a was an underwater harbo

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  Striatura pugetensis

  Striatura pugetensis

  Bishop Museum freshwater/terrestrial checklist page explicitly assigns the source taxon to Kauaʻi; the institutional page is the only island-specific evidence inspected. Fresh WoRMS/MolluscaBase name query on 2026-10-01 returned Striatura

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  Strigatella fulvescens

  Strigatella fulvescens

  TR29a appendix (PDF p.116/printed p.108) records source spelling Mitra fulvecens at a Kauaʻi shallow survey station. Fresh WoRMS/MolluscaBase query returned Strigatella fulvescens accepted (AphiaID 1060922); the source spelling/combination

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  Sturanya juddii

  Sturanya juddii

  Bishop Museum checklist records Orobophana cookei and Orobophana juddii as Kauaʻi native land-snail concepts. MolluscaBase taxonomic search lists Sturanya juddii as accepted and marked extinct; historical Orobophana combinations are the so

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  Sturanya kauaiensis

  Sturanya kauaiensis

  Bishop Museum checklist records the kauaiensis and orientalis forms explicitly from Kauaʻi. Fresh MolluscaBase query returned Sturanya kauaiensis accepted (AphiaID 1291139); MolluscaBase source detail accepts orientalis under Sturanya kaua

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  Sturanya stokesii

  Sturanya stokesii

  Bishop Museum checklist records praemagna and stokesii forms from Kauaʻi. MolluscaBase search and source-detail pages accept Sturanya stokesii and mark it extinct. Terrestrial native land snail. Institutional Kauaʻi records and authorita

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  Styliferina goniochila

  Styliferina goniochila

  TR29a appendix records Styliferina goniochila at a Kauaʻi survey station. Fresh WoRMS/MolluscaBase query returned Styliferina goniochila accepted (AphiaID 566561). TR29a sampled shallow harbor and coral-reef habitats, generally 0-20 m. P

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  Stylocheilus striatus

  Stylocheilus striatus

  Sea Slugs of Hawaiʻi explicitly lists Kauaʻi; dated 2008 and 2018 Kauaʻi community observations corroborate the expert distribution. Fresh WoRMS/MolluscaBase query returned Stylocheilus striatus accepted (AphiaID 224662); expert account do

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  Subulina octona

  Subulina octona

  Cowie's Bishop Museum catalog explicitly lists K (Kauaʻi), states established, and says Kauaʻi records are based on Bishop Museum collections. Fresh WoRMS/MolluscaBase query returned Subulina octona accepted (AphiaID 875232). Terrestrial

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  Subulophora peasi

  Subulophora peasi

  TR29a appendix records source-name Triphora peasi at a Kauaʻi survey station. Fresh WoRMS/MolluscaBase query returned Subulophora peasi accepted (AphiaID 1625926), bridging the older Triphora combination. TR29a shallow harbor/reef survey

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  Succinea elongata

  Succinea elongata

  Bishop Museum terrestrial mollusk checklist explicitly places Succinea elongata on Kauaʻi. Fresh WoRMS/MolluscaBase query returned Succinea elongata accepted (AphiaID 1513788). Terrestrial snail. Institutional locality and accepted name