Size = 9 - 11 mm Paropsis charybdis is a variable beetle.

A translucent form occurs which I assume is the same species. Heart Morass, Victoria.

This form is scarce and features a dark blotch on the posterior half of the cell of the elytra. North Harcourt, Victoria.

Paropsis (Latin) = dish.

Charybdis is the name of a whirlpool off the coast of Sicily. It was personified as a female monster.

It is a serious pest of commercial eucalyptus plantations in New Zealand and sometimes in Tasmania.

http://www.cabi.org/isc/datasheet/38925

They are bivoltine meaning two broods per season.

The female can produce 1500 to 2000 eggs.

They emerge from hibernation in August to September.

Lifecycle is 7-9 weeks @ 20 Celsius and varies with food plant.

Eggs hatch in 14 - 21 days

Larvae 1 4 days

2 2.5 days

3 3 days

4 9.5 days

Prepupal 8 - 10 days

pupal 14 days

Paropsis charybdis Stål, 1860

Map source ALA; Paropsis+charybdis distribution map map.