1 Shelford's Variable Cockroach at Melba, ACT
Identification history
| Robshelfordia circumducta | 23 Jan 2025 | trevorpreston | ||
| Johnrehnia solida | 19 Jan 2025 | MichaelMulvaney | ||
| Johnrehnia solida | 18 Jan 2025 | kasiaaus |
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6 comments
trevorpreston
wrote:
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?
MichaelMulvaney
wrote:
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
kasiaaus
wrote:
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.
trevorpreston
wrote:
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.
trevorpreston
wrote:
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
-
Collections
kasiaaus NatureMapr Canberra & Southern Tablelands Latest Cockroaches (Blattodea, several families) Insects
Additional information
- 12mm to 25mm Animal size
- Alive / healthy Animal health
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
- Machine learning
- External link More information
Record quality
- Images or audio
- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
- GPS evidence of location
- Description
- Additional attributes
