''Eleutherodactylus dilatus'' is a species of frog in the family Eleutherodactylidae. It is endemic to Mexico and restricted to the Chilpancingo region of the

Sierra Madre del Sur The Sierra Madre del Sur is a mountain range in southern Mexico, extending from southern Michoacán east through Guerrero, to the Isthmus of Tehuantepec in eastern Oaxaca. Geography The Sierra Madre del Sur joins with the Eje Volcánico Transv ...

in central Guerrero. Its common name is Guerreran peeping frog.

Description

Specimens in the

type series In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the ...

measured in snout–vent length, with the single female being larger than the males. The tympanum is small, up to 1 mm in males and 1.5 mm the female, and sometimes indistinct. The canthus appears sharply angled. The dorsum is pustulate and lavender to brownish in color, with black mottling. The venter is granular and varies from nearly white to heavily pigmented and with numerous white subcircular spots. There is usually a distinct, dark loreal stripe running from the nostril to the eye and continuing posteriorly onto the shoulder. There are large ochraceous spots anterior proximal face of the femur as well as posteriorly in the bend of the knee. The tibia have three, sometimes two transverse bars. The tips of the two outer fingers are truncate and laterally dilated (having almost twice the width of the subterminal phalanges—hence the

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

''dilatus''). Male advertisement call is a "peep" and "trill", sometimes a five-note trill.

Habitat and conservation

The species' natural habitats are pine-oak forests and crops in the forests. The specimens in the type series were found at an elevation of

above sea level Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as ''orthometric heights''. The comb ...

. They were collected at night from small shrubs and pines some above ground. ''Eleutherodactylus dilatus'' is an uncommon species. It is threatened by loss and disturbance of its forest habitat. It receives a degree of protection in the Omiltemi Park, referred to as the Omiltemi State Park in recent sources.

References

{{Taxonbar, from=Q1593126 dilatus Endemic amphibians of Mexico Fauna of the Sierra Madre del Sur Amphibians described in 1955 Taxonomy articles created by Polbot