Robshelfordia circumducta
1 Shelford's Variable Cockroach at Melba, ACT
Identify this sighting
| Robshelfordia circumducta | trevorpreston | 23 Jan 2025 | |
| Johnrehnia solida | MichaelMulvaney | 19 Jan 2025 | |
| Johnrehnia solida | kasiaaus | 18 Jan 2025 |
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6 comments
21 Jan 2025
I am not familiar with Johnrehnia solida, can you please give me some reference to this species and how to tell it from Robshelfordia circumducta?
21 Jan 2025
Good question and the two Naturemapr records of Johnrehnia solida are distribution outliershttps://bie.ala.org.au/species/https://biodiversity.org.au/afd/taxa/126327e0-7b89-4b5d-8d5c-8212939bc609#tab_recordsView
I was using the black shapes on the pronotum to make an ID Those of R. circumducta tend to be heartshaped, while those of J. solida are more y or insect head shaped but this is likely to be an unreliable characteristics so happy for you to make the call
I was using the black shapes on the pronotum to make an ID Those of R. circumducta tend to be heartshaped, while those of J. solida are more y or insect head shaped but this is likely to be an unreliable characteristics so happy for you to make the call
21 Jan 2025
I based my suggestion on iNaturalist and ALA records which also seem to come from iNaturalist so it may not be correct.
21 Jan 2025
I will do some reading, hopefully Rentz has some info in his cockroach book. From a quick online search they look very similar but I need to do more searching. Always more to learn.
23 Jan 2025
I cant find any info on Johnrehnia solida, and the inaturalist link is only a suggestion from one person and not a solid ID. Unfortunately they are not mentioned in Rentz's book on Cockroaches, so in the absence of evidence that this might be something else I am fairly confident in an ID of Robshelfordia circumducta.
Location information
- Coordinates 149.050286-35.208580
- Altitude 593.0m
- Places Melba, ACT
Sighting information
- 1 Abundance
- 13 Jan 2025 11:25 PM Recorded on
- kasiaaus Recorded by
- 12mm to 25mm Animal size
- Alive / healthy Animal health
Collections
- kasiaaus NatureMapr Canberra & Southern Tablelands Cockroaches (Blattodea, several families) Insects Robshelfordia circumducta
Species information
- Robshelfordia circumducta Scientific name
- Shelford's Variable Cockroach Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 809.13m 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
- GPS evidence of location
- Additional attributes
- Description