Colourful Board-headed Bug

Size about 15mm. This bug was found close to a juvenile Brown House Spider on an Elderflower bush. It tried to avoid the camera by climbing to the underside of the leaf (where the spider had a nest) and then back up. Eventually, it posed for the photo. Despite some effort I didnt manage to identify this bug. ALA was down again. It might not be the most common bug since quite a few search attempts on google, bugguide etc. stayed without results. Its head and eye don't quite match an assassin bug, but I am quite confident that it is a mirid bug of some sort. It seems to have a sucking mouthpart. Very characteristic are the spiked shoulders. Body is orange with black square pattern at the upper edge, making it look like an assassin bug/reduviidae. Its legs are long and the thigh are clearly emerald coloured. I assume this is a nymph. Hence I didn't want to name after the leg colour. It even resembles Euagoras, having the shoulder spikes and the colour, even leg colour. Still, the head does not match. The sucking mouth part is extremly long, at least half the size of the animal. Update 28/2/2017: I found a few good representations on ALA. Obviously, my guess was wrong and it is not a Mirid Bug. The bug can also be found at http://www.brisbaneinsects.com/brisbane_coreidbugs/ColourfulBoardHeade%20Bug.htm (this great website can be so hard to navigate, often produces results once the identification is found but not before) where I copied the English name.