Unknown Gregarious Bolete

Growing in lawn, in a troop of more than 500, Killara after some days of rain, March 5, 2017. From 5-7cms high and caps about 5cms in diameter. Caps speckled red and pink, pores yellow, medium coarse. Flesh yellow, staining immediately dark blue green. Stipes yellow blushing to red at the base, straining dark blue green even when lightly touched. Growing around a rough barked eucalyptus tree, within the drip line in many clumps, each clump of about 15-25.