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Cockroaches (Blattodea, several families)

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A good reference for Cockroaches is the book “A Guide to the Cockroaches of Australia” by David Rentz. https://www.publish.csiro.au/book/6710/

This webpage by the CSIRO is also useful:
http://anic.ento.csiro.au/insectfamilies/order_overview.aspx?OrderID=42509&PageID=overview

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Cockroaches (Blattodea, several families)

Featured sightings

Johnrehnia contraria (Cockroach) at Aranda, ACT - 26 Dec 2023 by NateKingsford

Ectoneura pallidula at Mount Painter - 20 Feb 2024 by CathB

Ellipsidion australe (Austral Ellipsidion cockroach) at Vincentia, NSW - 1 Jan 2024 by RobG1

Ellipsidion australe (Austral Ellipsidion cockroach) at Mount Ainslie - 9 Dec 2023 by Hejor1

Johnrehnia concisa (A native cockroach) at Brunswick Heads, NSW - 3 Oct 2023 by coddiwompler

Anamesia frenchii at Leinster, WA - 29 Aug 2023 by HelenCross

Balta spuria (A Balta Cockroach) at Cook, ACT - 12 Apr 2022 by CathB

Calolampra sp. (genus) (Bark cockroach) at Harrison, ACT - 23 Aug 2023 by AndyRoo

Latest sightings

Laxta sp. (genus) at Higgins, ACT - 20 Dec 2025 by AlisonMilton

Laxta sp. (genus) at Higgins, ACT - 20 Dec 2025 by AlisonMilton

Unverified Cockroach (Blattodea, several families) at Hughes, ACT - 10 Dec 2025 by LisaH

Ectobiinae (subfamily) at Turner, ACT - 12 Dec 2025 by ConBoekel

Ellipsidion sp. (genus) (A diurnal cockroach) at Lyons, ACT - 24 Dec 2025 by ran452

Ellipsidion australe at Eaglemont, VIC - 19 Dec 2025 by Hejor1

Unverified Cockroach (Blattodea, several families) at Yass River, NSW - 19 Dec 2025 by SenexRugosus

Calolampra sp. (genus) (Bark cockroach) at Crowther, NSW - 18 Dec 2025 by Frecko

Laxta sp. (genus) (Bark cockroach) at Bogong, VIC - 17 Dec 2025 by Hejor1

Johnrehnia sp. (genus) (A coachroach) at Gungahlin, ACT - 16 Dec 2025 by chriselidie

Ellipsidion australe (Austral Ellipsidion cockroach) at Turner, ACT - 13 Dec 2025 by AlisonMilton

Ellipsidion australe (Austral Ellipsidion cockroach) at Bredbo, NSW - 12 Dec 2025 by AlisonMilton

Ellipsidion humerale (Common Ellipsidion) at Bright, VIC - 14 Dec 2025 by Hejor1

Ellipsidion australe at Bright, VIC - 14 Dec 2025 by Hejor1

Ellipsidion australe (Austral Ellipsidion cockroach) at Hawker, ACT - 9 Dec 2025 by sangio7

Robshelfordia sp. (genus) (A Shelford cockroach) at Crowther, NSW - 8 Dec 2025 by Frecko

Melanozosteria cingulata (A wingless native cockroach) at Kungala, NSW - 8 Dec 2025 by donnanchris

Ellipsidion australe (Austral Ellipsidion cockroach) at Hawker, ACT - 4 Dec 2025 by AlisonMilton

Ellipsidion australe (Austral Ellipsidion cockroach) at Bruce, ACT - 3 Dec 2025 by AlisonMilton

Ellipsidion australe (Austral Ellipsidion cockroach) at Theodore, ACT - 2 Dec 2025 by Cardy

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Discussion

MichaelMulvaney wrote:

Yesterday

Distinctive patterning, but not one I know

Johnrehnia sp. (genus)

DianneClarke wrote:

18 Dec 2025

Cockroach

Calolampra sp. (genus)

MichaelMulvaney wrote:

13 Dec 2025

Appears to be a southern extension to known species range

Melanozosteria cingulata

KMcCue wrote:

6 Nov 2025

Thanks, it does look like a cockroach

Ellipsidion australe

AlisonMilton wrote:

6 Nov 2025

@KMcCue Kevin, this is the Ellipsidion australe cockroach

Ellipsidion australe

Significant sightings

Species Richness Score (SRS)

163

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