Seems to be feeding on a Yellow Box leaf. After wading through 500+ Pentatomidae photos on Bowerbird the only match I could find was http://www.bowerbird.org.au/observations/88269. According to the post Acanthosomatidae differs from Pentatomidae in having 2 instead of 3 tarsal segments but I don't think you can see that in my crappy photo.
Larval food plants are in the citrus family and do not exist in the park. I have previously seen the species mating at the Gellibrand Hill summit, and I assume this one next to Providence Road was there for the same purpose. I may have seen one in exactly the same spot last year. Presumably it is the closest place to someones Lemon tree that matches the criteria for a mating site.
In the vegie patch at the Woodlands Historic Park office. Larval food plants in the Urticaceae family - the only extant plant in the park is the weed Small Nettle. Not sure what was of interest in the vegie patch, don't think they are growing any nettles.
large wasp, about 20mm long. Looks similar to photos of Gotra sp. on bowerbird except mine seems to have orange on the abdomen while all the others are black and white only. Also mine has a rather short ovipositor.
Separate photos of fruit and leaf. This is the first record of the species at Woodlands Historic Park. Probably the last record too since I only found two plants, surrounded by several million *Plantago lanceolata (rough estimate!).
Another Gumtree hopper seen last summer on Eucalyptus melliodora but not this summer. I have said genus Eurymeloides due to the two rows of spurs on the hind tibia (see third photo), but does not match any species pictures I can find.
Four of these butterflies seen on the same plant. I think this indicates a shortage of daisies rather than a surplus of butterflies. It is a totally degraded paddock except for one small patch of moderately degraded basalt plains grassland with about 20 Calocephalus.