땅딸이도마뱀붙이속

땅딸이도마뱀붙이속(Least gecko)은 아메리카 대륙에 서식하는 도마뱀붙이류의 일속이며 다른 도마뱀붙이류와는 아주 작은 크기, 찢어지지 않고 둥근 동공, 각각의 발가락에 단 한 개씩 난 둥근 빨판 혹은 비늘로 구별할 수 있다. 이 속의 학명은 발가락의 둥근 비늘에서 유래한 것이다.(''Sphaero'' = 둥근, ''dactylus'' = 손가락) 이 속의 모든 종들은 상당히 작지만 자라구아땅딸이도마뱀붙이, 버진아일랜드땅딸이도마뱀붙이의 두 종은 정말로 작아서, 주둥이-항문 길이가 1.6cm에 불과하며 전 세계에서 제일 작은 파충류로 여겨진다. 학명의 일부를 그대로 따서 스페로(Sphaero)라고 불리기도 한다.
다음과 같은 105 개의 종이 인정되었다.
* ''Sphaerodactylus alphus'' 
* ''Sphaerodactylus altavelensis''  - Alto Velo least gecko, Alto Velo sphaero
* ''Sphaerodactylus argivus''  - Cayman least gecko
* ''Sphaerodactylus argus''  - ocellated gecko, ocellated sphaero, stippled sphaero
* ''Sphaerodactylus ariasae''  - Jaragua sphaero, Jaragua dwarf gecko
* ''Sphaerodactylus armasi''  -  Guantanamo least gecko, Guantanamo coastal gecko
* ''Sphaerodactylus armstrongi''  - Armstrong's least gecko
* ''Sphaerodactylus asterulus''  - Haitian least gecko
* ''Sphaerodactylus beattyi''  - Saint Croix's sphaero, Beatty's least gecko
* ''Sphaerodactylus becki''  - Beck's least gecko
* ''Sphaerodactylus bromeliarum''  - El Yunque least gecko
* ''Sphaerodactylus caicosensis''  - Caicos banded sphaero, Caicos least gecko
* ''Sphaerodactylus callocricus''  - rough-banded sphaero, callous least gecko
* ''Sphaerodactylus celicara''  - Baracoan eyespot sphaero
* ''Sphaerodactylus cinereus''  - gray gecko
* ''Sphaerodactylus clenchi''  - peninsula least gecko
* ''Sphaerodactylus cochranae''  - Cochran's least gecko
* ''Sphaerodactylus continentalis'' 
* ''Sphaerodactylus copei''  - Cope's least gecko
* ''Sphaerodactylus corticola''  - central Bahamas sphaero, Rum Cay least gecko
* ''Sphaerodactylus cricoderus''  - Turquino collared sphaero
* ''Sphaerodactylus cryphius''  - Bakoruco least gecko
* ''Sphaerodactylus dacnicolor''  - Jamaican tailspot sphaero, eastern Jamaican sharpnosed sphaero
* ''Sphaerodactylus darlingtoni''  - Darlington's least gecko
* ''Sphaerodactylus difficilis''  - Hispaniolan eyespot sphaero, difficult least gecko
* ''Sphaerodactylus dimorphicus'' 
* ''Sphaerodactylus docimus''  - Cabo Cruz banded sphaero
* ''Sphaerodactylus dunni''  - Dunn's least gecko
* ''Sphaerodactylus elasmorhynchus''  - Marche Leon least gecko, snout-shield sphaero
* ''Sphaerodactylus elegans''  - ashy gecko
* ''Sphaerodactylus elegantulus''  - Antigua least gecko
* ''Sphaerodactylus epiurus''  - Hispaniolan tailspot sphaero
* ''Sphaerodactylus exsul'' 
* ''Sphaerodactylus fantasticus''  - fantastic least gecko
* ''Sphaerodactylus gaigeae''  -chevronated sphaero, Gaige's least gecko
* ''Sphaerodactylus gilvitorques''  - Jamaican collared sphaero, Jamaican least gecko
* ''Sphaerodactylus glaucus''  - collared dwarf gecko, least gecko
* ''Sphaerodactylus goniorhynchus''  - Jamaican forest sphaero, Cakoarita least gecko
* ''Sphaerodactylus graptolaemus''  - Costa Rica least gecko
* ''Sphaerodactylus guanajae'' 
* ''Sphaerodactylus heliconiae'' 
* ''Sphaerodactylus homolepis''  - Caribbean least gecko
* ''Sphaerodactylus inaguae''  - Inagua sphaero, Inagua least gecko
* ''Sphaerodactylus intermedius''  - Mantanzas least gecko
* ''Sphaerodactylus kirbyi''  - Bequia dwarf gecko, Bequia sphaero, Grenadines sphaero
* ''Sphaerodactylus klauberi'' 
* ''Sphaerodactylus ladae''  - Martin Garcia least gecko
* ''Sphaerodactylus lazelli''  - Cap-Haitien least gecko
* ''Sphaerodactylus leonardovaldesi'' 
* ''Sphaerodactylus leucaster''  - eastern least gecko
* ''Sphaerodactylus levinsi''  - Desecheo gecko, Isla Desecheo least gecko
* ''Sphaerodactylus lineolatus''  - Panama least gecko
* ''Sphaerodactylus macrolepis''  - big-scaled least gecko, big-scaled dwarf gecko, cotton ginner
* ''Sphaerodactylus mariguanae''  - southern Bahamas sphaero, Mayaguana least gecko
* ''Sphaerodactylus microlepis''  - little-scaled least gecko
* ''Sphaerodactylus micropithecus''  - Monito gecko
* ''Sphaerodactylus millepunctatus''  - spotted least gecko
* ''Sphaerodactylus molei''  - Tobago least gecko
* ''Sphaerodactylus monensis''  - Mona least gecko
* ''Sphaerodactylus nicholsi''  - Nichols least gecko, Nichol's dwarf sphaero, Puerto Rican crescent sphaero
* ''Sphaerodactylus nigropunctatus''  - black-spotted least gecko, three-banded sphaero
* ''Sphaerodactylus notatus''  - reef gecko, brown-speckled sphaero
* ''Sphaerodactylus nycteropus''  - Morne Dubois least gecko
* ''Sphaerodactylus ocoae''  - Peravia least gecko
* ''Sphaerodactylus oliveri''  - Juventud least gecko
* ''Sphaerodactylus omoglaux''  - Fond Parisien least gecko
* ''Sphaerodactylus oxyrhinus''  - Jamaican sharpnosed sphaero
* ''Sphaerodactylus pacificus''  - Pacific least gecko
* ''Sphaerodactylus parkeri''  - Parker's least gecko, southern Jamaica banded sphaero
* ''Sphaerodactylus parthenopion''  - Virgin Islands dwarf sphaero, Virgin Gorda least gecko, Virgin Islands dwarf gecko
* ''Sphaerodactylus parvus'' 
* ''Sphaerodactylus perissodactylius''   - Dominican least gecko
* ''Sphaerodactylus phyzacinus'' 
* ''Sphaerodactylus pimienta''  -  pepper sphaero, Cuban pepper sphaero
* ''Sphaerodactylus plummeri''  - Barahona big-scaled sphaero
* ''Sphaerodactylus poindexteri'' 
* ''Sphaerodactylus ramsdeni''  - Ramsden's least gecko
* ''Sphaerodactylus randi''  - Pedernales least gecko
* ''Sphaerodactylus rhabdotus''  - two-striped sphaero, Vallede Neiba least gecko
* ''Sphaerodactylus richardi''  - Richard's banded sphaero, Zapata big-scaled sphaero
* ''Sphaerodactylus richardsonii''  - Richardson's least gecko, northern Jamaica banded sphaero
* ''Sphaerodactylus roosevelti''  - Roosevelt's beige sphaero, Roosevelt's least gecko
* ''Sphaerodactylus rosaurae''  - Bay Island least gecko
* ''Sphaerodactylus ruibali''  - Ruibal's least gecko
* ''Sphaerodactylus sabanus''  - Saba least gecko
* ''Sphaerodactylus samanensis''  - Samana least gecko
* ''Sphaerodactylus savagei''  - Altagracia speckled sphaero, Savage's least gecko
* ''Sphaerodactylus scaber''  - double-collared sphaero, Camaguey least gecko
* ''Sphaerodactylus scapularis''  - Boulenger's least gecko
* ''Sphaerodactylus schuberti''  - Neiba Agave sphaero
* ''Sphaerodactylus schwartzi''  - Guantanamo collared sphaero
* ''Sphaerodactylus semasiops''  - Cockpit eyespot sphaero, Cockpit least gecko
* ''Sphaerodactylus shrevei''  - Shreve's least gecko
* ''Sphaerodactylus siboney'' 
* ''Sphaerodactylus sommeri''  - TerreNueve least gecko
* ''Sphaerodactylus sputator''  - island least gecko
* ''Sphaerodactylus storeyae''  - Isle of Pines sphaero, Los Canarreos sphaero
* ''Sphaerodactylus streptophorus''  - Hispaniola least gecko, Hispaniolan small-eared sphaero
* ''Sphaerodactylus thompsoni''  - Thompson's least gecko, Barahona limestone sphaero
* ''Sphaerodactylus torrei''  - Barbour's least gecko, Cuban broad-banded sphaero
* ''Sphaerodactylus townsendi''  -Townsend's least gecko, Townsend's dwarf sphaero
* ''Sphaerodactylus underwoodi''  - Underwood's least gecko, Turks Islands sphaero
* ''Sphaerodactylus vincenti''  - Vincent's least gecko
* ''Sphaerodactylus williamsi''  - Williams's least gecko, Haitian striped sphaero
* ''Sphaerodactylus zygaena''  - Dame-Marie least gecko
주의사항: 삽입어구의 이명 명명자(:en:Binominal nomenclature)는 원래 해당 종을 땅딸이도마뱀붙이속(''Sphaerodactylus'')과는 다른 속에 속한 것으로 기술했을지도 모른다.
* Schwartz A, Thomas R (1975). ''A Check-list of West Indian Amphibians and Reptiles''. Carnegie Museum of Natural History Special Publication No. 1. Pittsburgh, Pennsylvania: Carnegie Museum of Natural History. 216 pp. (''Sphaerodactylus'', pp. 142–164).
* Wagler J (1830). ''Natürliches System der AMPHIBIEN, mit vorangehender Classification der SÄUGTHIERE und VÖGEL. Ein Beitrag zur vergleichenden Zoologie''. Munich, Stuttgart and Tübingen: J.G. Cotta. vi + 354 pp. + one plate. (''Sphaerodactylus'', new genus, p. 143). (in German and Latin).
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분류:땅딸이도마뱀붙이과