Isaacs Ridge and Nearby

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This location has been created to help bring some clarity to the Isaacs Ridge area, where Google Maps is vague on the boundary between Isaacs and Jerrabomberra. It covers Isaacs Ridge Nature Reserve, the Offset Area, Isaacs Pines and the open space nearby.

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Featured sightings

Hypericum perforatum (St John's Wort) at Isaacs Ridge and Nearby - 14 Nov 2023 by Mike

Hypoxis hygrometrica var. villosisepala (Golden Weather-grass) at Isaacs, ACT - 16 Nov 2022 by Mike

Thelymitra sp. (pauciflora complex) (Sun Orchid) at Jerrabomberra, ACT - 19 Oct 2022 by Mike

Acrida conica (Giant green slantface) at Isaacs, ACT - 12 Mar 2021 by MPennay

Glycine clandestina (Twining Glycine) at Isaacs, ACT - 30 Jun 2020 by Mike

Asplenium flabellifolium (Necklace Fern) at Isaacs, ACT - 7 Apr 2020 by Mike

Tachyglossus aculeatus (Short-beaked Echidna) at Isaacs Ridge - 17 Sep 2018 by roymcd

Latest sightings

Psilogramma (genus) at Isaacs, ACT - 12 Apr 2025 by Mike

Rhipidura albiscapa (Grey Fantail) at Isaacs, ACT - 13 Apr 2025 by Mike

Petroica boodang (Scarlet Robin) at Isaacs, ACT - 13 Apr 2025 by Mike

Agonoscelis rutila (Horehound bug) at Isaacs, ACT - 13 Apr 2025 by Mike

Aphis nerii (Milkweed Aphid) at Isaacs, ACT - 11 Apr 2025 by Mike

Oxypetalum coeruleum (Tweedia or Southern Star) at Isaacs, ACT - 11 Apr 2025 by Mike

Proteuxoa sanguinipuncta (Blood-spotted Noctuid) at Isaacs, ACT - 28 Dec 2023 by NateKingsford

Urodacus manicatus (Black Rock Scorpion) at Isaacs, ACT - 28 Dec 2023 by NateKingsford

Stanwellia sp. (genus) (Trapdoor Spider) at Isaacs, ACT - 1 Feb 2024 by NateKingsford

Urodacus manicatus (Black Rock Scorpion) at Isaacs, ACT - 28 Apr 2024 by NateKingsford

Stanwellia sp. (genus) (Trapdoor Spider) at Isaacs, ACT - 28 Apr 2024 by NateKingsford

Stanwellia sp. (genus) (Trapdoor Spider) at Isaacs, ACT - 10 Feb 2025 by NateKingsford

Heteronympha merope (Common Brown Butterfly) at Isaacs, ACT - 5 Apr 2025 by DavidDedenczuk

Dysphania pumilio (Small Crumbweed) at Isaacs, ACT - 8 Apr 2025 by Mike

Chenopodium album (Fat Hen) at Isaacs, ACT - 8 Apr 2025 by Mike

Bidens subalternans (Greater Beggars Ticks) at Isaacs, ACT - 8 Apr 2025 by Mike

Marrubium vulgare (Horehound) at Isaacs, ACT - 8 Apr 2025 by Mike

Solanum chenopodioides (Whitetip Nightshade) at Isaacs, ACT - 8 Apr 2025 by Mike

Cynoglossum australe (Australian Forget-me-not) at Isaacs, ACT - 8 Apr 2025 by Mike

Falco berigora (Brown Falcon) at Isaacs, ACT - 8 Apr 2025 by Mike

Eragrostis curvula (African Lovegrass) at Isaacs, ACT - 1 Apr 2025 by Mike

Ficus carica (Fig) at Isaacs, ACT - 1 Apr 2025 by Mike

Eucalyptus globulus subsp. bicostata (Southern Blue Gum, Eurabbie) at Isaacs, ACT - 1 Apr 2025 by Mike

Psilogramma casuarinae (Privet Hawk Moth) at Isaacs, ACT - 1 Apr 2025 by Mike

Fraxinus angustifolia subsp. angustifolia (Desert Ash) at Isaacs, ACT - 1 Apr 2025 by Mike

Verbascum thapsus subsp. thapsus (Great Mullein, Aaron's Rod) at Isaacs, ACT - 28 Mar 2025 by Mike

Chondrilla juncea (Skeleton Weed) at Isaacs, ACT - 28 Mar 2025 by Mike

Solanum nigrum (Black Nightshade) at Isaacs, ACT - 28 Mar 2025 by Mike

Tribulus terrestris (Caltrop, Cat-head) at Fadden, ACT - 24 Mar 2025 by Mike

Bidens subalternans (Greater Beggars Ticks) at Fadden, ACT - 23 Mar 2025 by Mike

Hedera sp. (Ivy) at Isaacs, ACT - 18 Mar 2025 by Mike

Ailanthus altissima (Tree-of-Heaven) at Isaacs, ACT - 18 Mar 2025 by Mike

Cassinia longifolia (Shiny Cassinia, Cauliflower Bush) at Isaacs, ACT - 18 Mar 2025 by Mike

Acer negundo (Box Elder) at Isaacs, ACT - 18 Mar 2025 by Mike

Viburnum tinus (Laurustinus) at Isaacs, ACT - 18 Mar 2025 by Mike

Celtis australis (Nettle Tree) at Isaacs, ACT - 18 Mar 2025 by Mike

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Discussion

Mike wrote:

14 Apr 2025

I certainly underestimated the abundance. Poisoned another 1120 plants before I ran out of enthusiasm and poison. More to go.

Oxypetalum coeruleum

Mike wrote:

13 Apr 2025

Larvae were submitted separately. Maybe I should have kept the adult longer, until it was verified. There is another pupa so I will keep the adult longer when (if) it emerges.

Psilogramma (genus)

donhe wrote:

13 Apr 2025

Not obvious that the moth is P. casuarinae.

Psilogramma (genus)

ibaird wrote:

13 Apr 2025

I think the larva and the photos of the moth should be submitted separately.
Adult moth I think not fully emerged so hard to be sure about wing markings.

Psilogramma (genus)

donhe wrote:

13 Apr 2025

White dot in middle of forewing: so not P. casuarinae ?

Psilogramma (genus)