***coyuyo
male name
ARGENTINA
Insect with an oval body about 4 cm long, dark green, with a thick head, prominent eyes and four transparent wings crossed by nerves; The males have an apparatus at the base of the abdomen with which they produce a monotonous and very strident sound.

***The common potoo, grey potoo, lesser potoo or poor-me-one (Nyctibius griseus), is a nocturnal bird which breeds in tropical Central and South America from Nicaragua to northern Argentina and northern Uruguay. The northern potoo (N. jamaicensis) was formerly classified as a subspecies of this species.

This potoo is a large cypselomorph bird related to the nightjars and frogmouths, but like other potoos it lacks the bristles around the mouth found in the true nightjars. It is 33–38 cm long and pale greyish to brown, finely patterned with black and buff, camouflaged to look like a log; this is a safety measure to help protect it from predators, but its mode of perch is also a camouflage. It has large orange eyes.

***Ziziphus mistol or mistol is a spiniferous tree of the family Rhamnaceae, that belongs to genus Ziziphus, natural (and very abundant) of certain areas of Gran Chaco, South America. The word "mistol" derives from colonial era Spanish, from the word "mixture" (mezcla) since it was believed that mistol was a hybrid between species of genus Schinopsis because of the likely color of its wood to Spaniard colonists' perception.

***Sacha: hill (it may be also translated as forest) in Quichua.

***La vidala is a form of poetic composition that is usually accompanied with guitar or box and is sung at one voice.

It has very particular and ancient musical characteristics . Its melodies also receive the name of Yaraví, in Jujuy. Although they are similar, it should not be confused with vidalita.

***Schinopsis lorentzii is a hardwood tree known as red quebracho, native of the Paraguayan subtropical area, which forms forests in Gran Chaco region of Argentina, in Paraguay, and Bolivia. Some of its common names are coronillo, quebracho Cornillo (Brazil), quebracho chaqueño, quebracho colorado santiagueño, quebracho macho, and quebracho bolí. The qualification colorado ("red") differentiates it from other species of common quebracho tree, the Aspidosperma quebracho-blanco (quebracho blanco, "white quebracho", family Apocynaceae). The indication santiagueño (from Santiago del Estero) is made to distinguish it from quebracho colorado chaqueño, a closely related species (Schinopsis balansae).

It is considered a symbol of the Gran Chaco region. This tree is commercially very important due to its extremely hard and durable wood, and because of its tannin. The tanning industry has been exploiting quebracho forests for more than 100 years. This massive exploitation has led to the loss of 85% of the original Quebracho forests on in Argentina.

Santiago del Estero (Spanish pronunciation: [sanˈtjaɣo ðel esˈteɾo]), also called "Santiago", is a province in the north of Argentina. Neighboring provinces, clockwise from the north, are Salta, Chaco, Santa Fe, Córdoba, Catamarca and Tucumán.
The indigenous inhabitants of these lands were the Juríes-Tonocotés, Sanavirones and other tribes. Santiago del Estero is still home to about 100,000 speakers of the local variety of Quechua, making this the southernmost outpost of the language of the Incas. When the language reached the area, and how, remains unclear—it may even have arrived only with the native troops that accompanied the first Spanish expeditions.

Santiago del Estero Quichua or Santiagueño Quechua (Santiagen Quichua) is a vulnerable dialect of Southern Quechua spoken by 60,000-100,000 people (estimates vary widely) in Argentina. It is spoken in the province of Santiago del Estero. The estimated coordinates are 27°47′S 64°16′W. Long-standing migration has also resulted in the presence of the language in other provinces of northeastern Argentina and in Buenos Aires.
It is 81% similar to other Quechuan languages. There are radio programs in this languages and also a dictionary. There is some cultivation of the language as it is taught in some schools. It uses the Roman alphabet. Its speakers are Native Americans and they mostly work in agriculture. It is the seventh-most widely spoken language in Argentina behind Spanish, Italian, Levantine Arabic, South Bolivian Quechua, Standard German, and Mapudungun. It is the third most widely spoken indigenous language.
There was once another dialect of Southern Quechua in Argentina, that of Catamarca and La Rioja, but it has gone extinct. All were introduced during the Spanish colonial period, as Quechua speakers were transplanted to various parts of the Spanish realm (continuing a practice of the Inca), and Quechua was an official language of Santiago, Catamarca, and La Rioja during the colonial era.