Bolitoglossa diminuta Robinson 1976

This salamander is one of the smallest known in the genus Bolitoglossa; it has moderate webbing, protuberant eyes, a light mid-dorsal marking that is broad with scalloped edges, and a light venter. The total length is 66 mm and the female standard length is 31-32 mm (from the two known adult specimens: Bolaños and Wake 1981). The tail is moderately long (53% of the total body length) and has a weak constriction at the base. The tail does not show strong lateral compression. Leg length is 22% of the standard length. The head width is 15% of the standard length. Eyes are large and protuberant. There is a deep groove below the eye, following its curvature, and a postorbital groove that becomes continuous with the dorsolateral bands. No interorbital crest is present. The snout is moderately short with a weakly developed canthus rostralis, and the nostrils are small; no labial protuberances are present in the female holotype. Three maxillary teeth and twelve vomerine teeth are present. There are two costal folds between adpressed limbs. Digits are moderately webbed (about 2/3 webbed) except for the inner digit of hands and feet, which is completely webbed. The subterminal pads are weakly defined. Relative finger lengths are 3>4>2>1 and relative toe lengths are 3>2=4>5>1. No postiliac gland is present (Robinson 1976).In preservative, this species has a brown dorsum with a broad midlateral light field that has scalloped edges, especially around the costal grooves, and darker flanks (Robinson 1976; Savage 2002). There may be darker lateral broad bands that pass above the forelimb insertion sites, becoming indistinguishable from the ground color once they pass over the hind limb insertion sites (Robinson 1976). Elbows and knees are not pigmented (Robinson 1976). The venter is lighter colored with scattered melanophores (Savage 2002). Ventral melanophores are dense in the cloacal region but sparse on the tip of the tail (Robinson 1976).The specific epithet diminuta means "exceedingly small" in Spanish (Robinson 1976).This species was assigned to the genus Bolitoglossa due to the presence of 13 costal grooves and the absence of a sublingual fold (Robinson 1976). It can immediately be distinguished from other Costa Rican species due to its small size (in standard length measurement) (Robinson 1976). It is the smallest in the genus (Savage 2002). It is similar to Bolitoglossa gracilis, which has a yellowish ground color with irregular dark brown lines (Savage 2002). It also has a dark longitudinal stripe midventrally (Savage 2002).A Spanish-language species account can be found at the website of Instituto Nacional de Biodiversidad (INBio) (http://darnis.inbio.ac.cr/FMPro?-DB=UBIpub.fp3&-lay=WebAll&-Format=/ubi/detail.html&-Op=bw&id=4333&-Find).

It is found in premontane rainforest at Quebrada Valverde, a steep stream near Tapantí, Cartago Province on the Atlantic slope of Costa Rica in the Cordillera de Talamanca, at an elevation of 1555 m asl. The coordinates of the stream are 9' 43' 18"N latitude and 83° 41' 48"W longitude. The female holotype was found on a mat of liverworts on a small branch on the ground, assumed to have recently fallen from a tree. Also found in the liverwort mat were 7 eggs, 5 of which eventually hatched into salamanders of the same species (Robinson 1976).

It is assumed to be a canopy dweller. Eggs were found in a liverwort mat on a tree branch on the ground, associated with an adult female. Hatchlings measured 8 mm in snout-vent length and 3.2 mm in tail length. It is a direct developer, like others in the genus Bolitoglossa (Robinson 1976).

It is a rare species (Savage 2002), known only from two adult specimens plus clutches, but the population trend appears to be stable (Bolaños et al. 2008). No major threats are currently known, but because of its small range, it is at risk for extinction due to stochastic processes (Bolaños et al. 2008). It is not found in degraded environments (Bolaños et al. 2008).

The Quebrada Valverde salamander (Bolitoglossa diminuta) is a species of salamander in the family Plethodontidae. It is endemic to Costa Rica. Its natural habitat is subtropical or tropical moist montane forests.

Bolitoglossa diminuta es una especie de salamandras en la familia Plethodontidae; es una de las menores del género. Es endémica del parque nacional Tapantí, en la provincia de Cartago (Costa Rica).​ Su hábitat natural son los montanos húmedos tropicales o subtropicales. Está amenazada debido a su limitada distribución.​

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Bolitoglossa diminuta Bolitoglossa generoko animalia da. Anfibioen barruko Plethodontidae familian sailkatuta dago, Caudata ordenan.

Bolitoglossa diminuta est une espèce d'urodèles de la famille des Plethodontidae.

Bolitoglossa diminuta é uma espécie de anfíbio caudado pertencente à família Plethodontidae, sub-família Plethodontinae. Possuem cores semelhantes à do solo. Os machos adultos medem de 44 à 57 mm, e as fêmeas de 53 à 67 mm.

Bolitoglossa diminuta là một loài kỳ giông trong họ Plethodontidae. Nó là loài đặc hữu của Costa Rica. Môi trường sống tự nhiên của chúng là các khu rừng vùng núi ẩm nhiệt đới hoặc cận nhiệt đới.