Description
provided by AmphibiaWeb articles
Micryletta steinegeri is a species of frog with a snout-vent length of 21.86 mm – 24.14 mm in males and 25.75 mm – 28.25 mm in females. The head is at least as broad as it is long, and the snout is blunt. The nostrils are large, circular, slightly prominent, and are directed towards the sides and the front of the body. The canthus rostralis is smooth and curved, and the region between the eye and the nostril is almost vertical. The tympana are not visible, though there is a very faint supratympanic fold. The back has a warty texture, whereas the underside is granular. There are many large supernumerary palmar tubercles, and the subarticular tubercles are well defined. Males lack nuptial pads. The fingertips are blunt, and the relative finger lengths are: II < I < IV < III. The tibia length is shorter than the foot length, and the feet lack a tarsal fold. The inner metatarsal tubercle is well defined and either circular or ovoid in shape, whereas the outer metatarsal tubercle is faint in appearance. There are many small supernumerary tubercles on the foot, and the subarticular tubercles on the toes are very prominent. The feet have primitive webbing, and the toe tips are dull except for the fourth toe, which is enlarged. The relative toe lengths are: I < II < V < III < IV (Wang et al. 1989).The tadpole has an ovoid and depressed body. The snout is wide and curved, and the nostrils are positioned on the top of the snout. There is a slightly rounded, prominent groove running between the nostril and the anterior end of the eye. The eyes are horizontal. The mouth is at the very front of the snout and located on the upper half of the body. The lips are curved inward, and the lower lip extends past the upper lip. It has a medioventral spiracle, and the anus is positioned on the midline of the body. The tail fin is filamentous towards the end, and tapers to a pointed tip (Wang et al. 1989).It is similar in appearance to M. inornata, though M. inornata differs in having enlarged toe tips, no webbing on the feet, and a smaller ratio of the distance between the eyes to the upper eyelid width. Tadpoles of M. steinegeri are similar to those of Microhyla ornata, although Microhyla ornata differs in having a convex mouth, lighter coloration, and a more evenly tapered tail fin (Wang et al. 1989).In life, individuals have widely varying coloration. The examined holotype has a purple to orange brown back with a midline that runs from between the eyes to the end of the body. The back may have varying black markings, including stripes, marbling, irregular spots, and/or scarce speckling. The underside is light gray with black marbling. A black stripe runs from the snout tip through the eye, and all the way to the groin. The pupil is black and the iris is golden. The lips are spotted white, though the spotting on the upper lip may form a white line going from the angle of the mouth to the front of the eye. Males have a black throat. The backside of the limbs is orange and spotted black, whereas the undersides are white (Wang et al. 1989).Much of the variation within the species comes from the coloration and markings, though no description is available on the coloration differences within the species. Additionally, females are much larger than males, and males have a vocal sac (Wang et al. 1989).The species authority is: Boulenger, G. A. (1909). "Descriptions of four new frogs and a new snake discovered by Mr. H. Sauter in Formosa." Annals and Magazine of Natural History, Series 8, 4, 492-495.The species epithet, steinegeri, is named after Dr. L. Stejneger, author of the valuable monograph Herpetology of Japan and adjacent territories (Boulenger 1909).Micryletta steinegeri was first described by Boulenger in 1909, as Microhyla steinegeri. Subsequently, in 1931, Okada thought that M. steinegeri might be a junior synonym for Microhyla fissipes, as described by Boulenger in 1884. In 1934, Parker instead synonymized M. steinegeri with M. inornata, though with reservation. In 1999, Fei removed M. steinegeri from synonymy with M. inornata (Boulenger 1884, Boulenger 1909, Fei 1999, Okada 1931, Parker 1934).
- Boulenger, G. A. (1884). ''Descriptions of new species of reptiles and batrachians in the British Museum. Part II.'' Annals and Magazine of Natural History, series 5, 13, 77396-77398.
- Boulenger, G. A. (1909). ''Descriptions of four new frogs and a new snake discovered by Mr. H. Sauter in Formosa.'' Annals and Magazine of Natural History, Series 8, 4, 492-495.
- Okada, Y. (1931). The Tailless Batrachians of the Japanese Empire. Imperial Agriculture Experiment Station, Tokyo.
- author
- Tina Cheng
- author
- Gordon Lau
Distribution and Habitat
provided by AmphibiaWeb articles
This species has a fragmented distribution in central and southern Taiwan. Specifically, in southern Taiwan it is found in Kenting National Park, Taiping Ding, and Manzhou, and in central Taiwan it is found in Kanshirei. It occurs below 1000 m asl and inhabits broadleaf forests. It is sometimes also found in cultivated fields and orchards (Wang et a.l 1989, Stuart et al. 2008).
- author
- Tina Cheng
- author
- Gordon Lau
Life History, Abundance, Activity, and Special Behaviors
provided by AmphibiaWeb articles
This species is extremely rare and is thought to be declining in numbers. Individuals have only ever been found in three or four localities. It is threatened by habitat loss and degradation due to ongoing human settlement and small-scale agriculture. It is only protected in one area throughout its range, in Kenting National Park (Stuart et al. 2008).
- author
- Tina Cheng
- author
- Gordon Lau
Life History, Abundance, Activity, and Special Behaviors
provided by AmphibiaWeb articles
Adults are terrestrial. Breeding has been observed to occur during periods of prolonged rainfall in August. Males call throughout the day and night in temporary ponds and in grass around these ponds. Females swim towards the males at night, and amplexus happens in the water. Eggs are laid in single layers and are found connected to grasses or rocks, and float on the surface of ponds. The tadpoles develop in these ponds, and are primarily herbivorous. They utilize filter feeding as well as surface film feeding to consume plant material. Tadpoles metamorphose into froglets within 17 – 20 days (Wang et al. 1989, Stuart et al. 2008).
- author
- Tina Cheng
- author
- Gordon Lau
Relation to Humans
provided by AmphibiaWeb articles
It is found to occur in areas of human agriculture (Stuart et al. 2008).
- author
- Tina Cheng
- author
- Gordon Lau
Micryletta steinegeri: Brief Summary
(
Catalan; Valencian
)
provided by wikipedia CA
Micryletta steinegeri és una espècie de granota que viu a Taiwan.
Es troba amenaçada d'extinció per la pèrdua del seu hàbitat natural.
- license
- cc-by-sa-3.0
- copyright
- Autors i editors de Wikipedia
Micryletta steinegeri: Brief Summary
provided by wikipedia EN
Micryletta steinegeri (common names: Stejneger's paddy frog, Stejneger's narrow-mouthed toad, paddy frog, Taiwan little pygmy frog) is a species of frog in the family Microhylidae. It is endemic to central and southern Taiwan. In the past it has also been considered as a synonym of Micryletta inornata from continental Asia.
- license
- cc-by-sa-3.0
- copyright
- Wikipedia authors and editors
Micryletta steinegeri: Brief Summary
(
Spanish; Castilian
)
provided by wikipedia ES
Micryletta steinegeri es una especie de anfibio anuro de la familia Microhylidae. Se distribuye por el centro y sur de Taiwán por debajo de los 1000 msnm. Se encuentra amenazada de extinción a causa de la pérdida de su hábitat natural.
- license
- cc-by-sa-3.0
- copyright
- Autores y editores de Wikipedia
Micryletta steinegeri
(
Basque
)
provided by wikipedia EU
(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
- license
- cc-by-sa-3.0
- copyright
- Wikipediako egileak eta editoreak
Micryletta steinegeri: Brief Summary
(
Basque
)
provided by wikipedia EU
Micryletta steinegeri Micryletta generoko animalia da. Anfibioen barruko Microhylidae familian sailkatuta dago, Anura ordenan.
- license
- cc-by-sa-3.0
- copyright
- Wikipediako egileak eta editoreak
Micryletta steinegeri: Brief Summary
(
French
)
provided by wikipedia FR
Micryletta steinegeri est une espèce d'amphibiens de la famille des Microhylidae.
- license
- cc-by-sa-3.0
- copyright
- Auteurs et éditeurs de Wikipedia
Micryletta steinegeri: Brief Summary
(
Portuguese
)
provided by wikipedia PT
Micryletta steinegeri é uma espécie de anfíbio da família Microhylidae.
É endémica de Taiwan.
Os seus habitats naturais são: florestas subtropicais ou tropicais húmidas de baixa altitude, marismas intermitentes de água doce, terras aráveis, plantações , escavações a céu aberto e canals e valas.
Está ameaçada por perda de habitat.
- license
- cc-by-sa-3.0
- copyright
- Autores e editores de Wikipedia
Micryletta steinegeri: Brief Summary
(
Vietnamese
)
provided by wikipedia VI
Micryletta steinegeri là một loài ếch trong họ Nhái bầu. Chúng là loài đặc hữu của Đài Loan. Các môi trường sống tự nhiên của chúng là các khu rừng ẩm ướt đất thấp nhiệt đới hoặc cận nhiệt đới, đầm nước ngọt có nước theo mùa, đất canh tác, các đồn điền, hố lộ thiên, và kênh đào và mương rãnh. Loài này đang bị đe dọa do mất môi trường sống.
- license
- cc-by-sa-3.0
- copyright
- Wikipedia tác giả và biên tập viên
史丹吉氏小雨蛙
(
Chinese
)
provided by wikipedia 中文维基百科
史丹吉氏小雨蛙(Micryletta steinegeri)為姬蛙科下的一物種,為台灣特有種,主要分布於台灣中部及南部。本種過去曾被認為是德力姬蛙(Micryletta inornata)的同物異名[2]。
描述
史丹吉氏小雨蛙為小型蛙類,體態較台灣其他小型狹口蛙修長,體長最長可達25 mm(0.98英寸)。本種顏色及花紋變化多端,背部一般淺褐色,有一些暗褐色粗大斑點,斑點有時綴連成2至4條深色縱紋。上臂背面橘紅色。通常在五月春雨過後,上百隻成群出現森林底層的暫時性雨水池中求偶鳴叫,雄蛙有單一外鳴囊,叫聲高而連續。
本種繁殖期主要在春夏之交。每次產卵200-350粒左右,卵粒小,卵徑約0.11mm,卵塊成片漂浮在水面,黏在水草或石頭上。蝌蚪頭部及背部圓盤狀,平扁透明但有些深棕色斑點[3]。口位於吻端,眼睛在兩側,尾端尖細。和小雨蛙蝌蚪外型很像,但尾鰭較高,體色較深。本種曾為保育類,但後來因族群穩定而除名。
分布
本種僅分布於台灣,零散分佈在嘉義及台中近郊、曾文水庫、台南仙公廟、墾丁、台東、花蓮等地[4]。
棲息地
本種主要棲息於闊葉林,有時也會在耕地或果園中發現。蝌蚪生長於暫時性雨水池[1]。
參考文獻
物種識別信息
史丹吉氏小雨蛙: Brief Summary
(
Chinese
)
provided by wikipedia 中文维基百科
史丹吉氏小雨蛙(Micryletta steinegeri)為姬蛙科下的一物種,為台灣特有種,主要分布於台灣中部及南部。本種過去曾被認為是德力姬蛙(Micryletta inornata)的同物異名。