What is the capital city of this Central American isthmus, to which the species of crab Aratus pisonii is native, bordering with Costa Rica?
Aratus pisonii Aratus pisonii, commonly known as the mangrove tree crab, is a species of crab which lives in mangrove trees in tropical and subtropical parts of the Americas, from Florida to Brazil on the Atlantic coast, and from Nicaragua to Peru on the Pacific coast. It feeds mostly on the leaves of the mangroves, but is an omnivore, and prefers animal matter when possible. "A. pisonii" is the only species in the monotypic genus Aratus. The specific epithet "pisonii" commemorates the Dutch naturalist Willem Piso who travelled in Brazil in 1638 with Georg Marggraf.
Panamanian night monkey The Panamanian night monkey or Chocoan night monkey ("Aotus zonalis") is a species of night monkey formerly considered a subspecies of the gray-bellied night monkey of the family Aotidae. Its range consists of Panama and the Chocó region of Colombia. There are also unconfirmed reports of its occurrence in Costa Rica, especially on the Caribbean coast of Costa Rica. The species definitely occurs in the Atlantic lowlands of Panama close to the Costa Rica border.