Phoracantha semipunctata
1 Common Eucalypt Longicorn at Parkes, ACT
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| Phoracantha semipunctata | KimberiRP | 7 Apr 2026 | |
| Phoracantha obscura | TimL | 18 Mar 2026 |
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User's notes
These images provide additional closeup detail of the beetle shown in previous sighting 4723613. They show the interface between the beetle’s antennae and its compound eyes. The images appear to show that the head of this type of beetle may have evolved and changed shape over time, causing the base of each antenna to move across the face into the compound eye structure.
In the first image, immediately behind each compound eye, there are three dimples or pits which contain a single bristle-like hair growing vertically from the centre. These are mechanosensory bristles which connect to a single neuron at the base and turn mechanical stimulation into neural signals for the beetle’s brain. The bristles are typically distributed across the exoskeleton and provide feedback on the stresses and strains within the exoskeleton and provide a warning of any potential threats such as predators or parasites.
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Location information
- Coordinates 149.138033-35.302326
- Places Parkes, ACT
Sighting information
- 1 Abundance
- 10 Mar 2026 05:35 AM Recorded on
- TimL Recorded by
- 25mm to 50mm Animal size
Collections
- TimL NatureMapr Canberra & Southern Tablelands Longhorn beetles (Cerambycidae) Beetles (Coleoptera) Insects Phoracantha semipunctata
Species information
- Phoracantha semipunctata Scientific name
- Common Eucalypt Longicorn Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 821.63m Recorded at altitude
- External link More information
Record quality
Quality score
6 / 7
- Images or audio
- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
- Description
- Additional attributes
- GPS evidence of location