Amongst individual stocks, software maker Altium ALU.AX declined 3.8% after U.S. peer Autodesk Inc ADSK.O ended takeover talks. By Savyata Mishra July 19 (Reuters) - Australian shares closed lower on Monday, with losses seen across major sub-indexes, as a surge in Delta variant cases in the country and other Asian nations raised concerns about economic recovery. Australian authorities said Victoria state will extend a COVID-19 lockdown beyond Tuesday, while other Asian countries also struggled to curb the virus, denting markets already worried about global growth and high inflation.