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.

하위 종 
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.

각주

참고 문헌 

 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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