General Manuel Belgrano Railway projects to run passenger services between La Quiaca and San Salvador de Jujuy, both cities in Jujuy Province. The main lines departed from Retiro station in Buenos Aires to the north through the provinces of Buenos Aires, Santa Fe, Córdoba, Santiago del Estero, Tucumán, Chaco, Formosa, Salta, Jujuy, San Luis, Mendoza, San Juan, La Rioja and Catamarca. In 1876, Ferrocarril Central Norte started services from Córdoba to Tucumán. It was the first metre gauge in Argentina, mainly due to economic reasons. It had been built by the Argentine State to expand Central Argentine Railway network (Rosario-Córdoba), a British-owned company by
Myrmecia formosa yellow. This species compared to others is rather unusual with its colours. Myrmecia formosa Myrmecia formosa is an Australian ant which belongs to the "Myrmecia" genus. This species is native to Australia. Their distribution in Australia has notably been studied and collected in New South Wales. "Myrmecia formosa" is a small species, as the typical size for a worker in the species is only 10-13 millimetres in length. The clypeus, pronotum, mesonotum, and the node is a blood red colour, the gaster, sides of the thorax, half of the head and other features are black, legs are brown, tarsi is