Scinax constrictus

The neotropical Froschlurch Scinax constrictus belongs to the family of tree frogs. Within the genus Scinax the type is placed in the Scinax ruber clade and the Scinax rostratus group. The species was described in 2004 based on the holotype from the community Palmeiras (Goiás, Brazil); several individuals had been but for years previously collected, but not determined. The species name comes from the Latin word " constrictio " and refers to a dorsolateral dermal contraction at the shoulders.

Dissemination

S. constrictus has a wide distribution in the Brazilian state of Goiás, but the precise borders are still unclear. At the time of first description individuals from the communities Guapo, Itaberaí, Jussara, Mossâmedes, Palmeiras, Pirenópolis, Pontalina, Porangatu and Uirapuru in Goiás were known.

Description

The species has when compared to other members of the genus are small in size. The head -body length of males ranges from 20.8 to 29.4 mm, the. Females from 28.2 to 35.6 mm Adult animals have a dorsolateral dermal contraction at the shoulders. The dorsal coloration ranges from beige to dim green and brown with black, irregular points. The skin glands on your back are brown, yellow or orange colored. The eardrum exterior is bronze. The vocal sac is pigmented. The legs have mostly three dark brown stripes. The nostrils protrude slightly, but not stand out in the plan view of the outline of the head from. The skin is slightly warty. Tubercles on the upper eyelid, the jaw and Calcartuberkel are available. Females have two tubercles on the cloaca, males have a slight curvature.

The species most closely resembles Scinax nebulosus. From this tree frog toes bend it differs generally by their smaller snout-vent length as well as by the presence of tubercles on the jaw and the slight curve on the cloaca of the male. In addition, the calls of the males can be distinguished. Pictures and drawings of S. constrictus can be found in the original description.

Habitat and Ecology

Scinax constrictus lives in the Cerrado. Reproduction was detected from December to March in permanent waters in the open country. Males call at this time " upside down " sitting, a typical feature of the S. rostratus species group of bushes in height about 80 cm. Spawning females have been recorded from December to February, each about 200 black eggs were delivered. The tadpoles are currently undescribed.

Endangering

The IUCN lists Scinax constrictus as " not at risk " (Least Concern ) due to its widespread use in Goiás and because it is not assumed that the stocks could lose weight fast enough to warrant a higher level of danger. However, exact population size and trend are unknown. Main threat to the species is the progressive expansion of soybean, corn and rice cultivation and use of Cerradobioms for intensive pasture.