[1] Native to Australia, it has now spread to many parts of the world, including practically all countries where tree species of Eucalyptus have been introduced.

[2] Within Australia, Phoracantha semipunctata primarily seeks for decaying trees and branches which have been critically impaired due to natural disasters.

[2] However, the damage inflicted by Phoracantha semipunctata may be seen as a positive factor in some regions, as Eucalyptus trees that are introduced are seen as invasive plant species imposing harm on the natural environment.

[2] Phoracantha semipunctata are typically dark brown & beige in colour and are approximately similar in size measuring at around 2.3cm long.

[2] Adults are primarily found during the spring and summer seasons, coming out during the evening hours,[5] commonly feeding on pollen & nectar within host trees.

[10] This influences adults to fly in a more upwind motion and land on specific areas of the tree, and also acts as a factor upon when they fly-off.

[10] When searching for a host tree, adults utilise a specific flight mechanic that consists of an odour oriented optomotor and autonomous contrary zig-zag movements.

[10] The antennae of Phoracantha semipunctata adults serve as peripheral sensory tools, which help identify key environmental factors, including host tree determination.

[11] Sensilla basiconica 1 is distributed all across the flagellomeres of the flagellum, where they are shaped as dull pointed tips, typically bent closer to the base.

[5] Significant damage imposed by this eucalyptus borer is not common in Australia, as the majority of attacks are limited to trees subject to droughts.

[5] However, these insects have been found to impose damage amongst juvenile Jarrah trees within the Southwestern region of Australia, primarily in bauxite mines which have been recently replanted.

[5] In their non-native ecosystems, they are considered as a major pest problem imposing a great amount of damage upon natural biodiversity, typically on trees that are placed under stress.

[10] Regions within the Northern hemisphere including Palestine, the United States, and Morocco are examples in which these beetles have been proven to be a major pest problem.

[6] Eggs measure at around 2.5mm to 3mm and are of a yellow colour, shaped in an elongated oval, and may require 1 to 2 weeks to hatch, based on the weather conditions.

Larvae Phoracantha semipunctata, will establish pupal chambers, within the sapwood or in some cases the heartwood, where they will develop into adult beetles.

[6] After pupation, adult Phoracantha semipunctata will then begin digging themselves out the pupal chamber in which they will then create a 8-10mm opening in the external bark layer.

[7] Phoracantha semipunctata are more active in the earlier warmer evening hours, and are found in host trees primarily characterised by a more male ratio based population.

[6]Phoracantha semipunctata's antennae serve as primary olfactory tools, enabling them to distinguish certain environmental factors — one of them being the detection of host tree determination.

[9] However, adult beetles do not single out host trees; logs based on vision or contact with bark surface, within a constricted area.

[6] The decision for adults to decide upon host trees, lies upon two underlying factors — oviposition preference and the degree of larvae performance.

Females are found typically slowly wandering around the external layer of bark of the larval hosts, seeking to find areas where they can potentially oviposit their eggs.

[4] During this process, female adults often stop to deposit eggs for a short period of time, before continuing wandering on the external layer of bark.

Braconid parasitoids, including Syngaster lepidus, and Bracon capitator have been recorded to impose negative effects upon larvae survivorship.

[2] Ants are estimated to have extracted 36% of beetle eggs within Eucalyptus trees; however, the degree of damage they directly impose on the P. semipunctata population have not been analysed.

[7] The provision of sufficient water during long durations of dry condition, is a measure that may be implemented to mitigate the effects in which these beetles may impose on the natural environment.