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Garden weevil

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Scientific Name
Phlyctinus callosus
Pest Alias
Banded fruit weevil
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Hexapoda
Class:
Insecta
Informal:
Pterygotes
Subclass:
Pterygota
Order:
Coleoptera
Suborder:
Polyphaga
Superfamily:
Curculionoidea
Family:
Curculionidae
Subfamily:
Entiminae
Tribe:
Oosomini
Genus:
Phlyctinus
Species:
Phlyctinus callosus

Garden weevil (Phlyctinus callosus) for Australian conditions:


Garden Weevil in Australia

(Phlyctinus callosus, also known as the banded fruit weevil)

✅ Where It's a Problem:

  • Southern Australia: Especially in Western Australia, South Australia, Victoria, and parts of NSW.

  • Affects both commercial horticulture and home gardens.


Commonly Affected Plants in Aussie Gardens:

  • Grapes, apples, peaches, plums

  • Strawberries

  • Beans, broad beans

  • Roses, ornamentals

  • Some native plants, though usually less affected


What Damage Looks Like (Australian Context):

  • Notched leaf edges from adult feeding.

  • Cosmetic fruit damage (e.g., on grapes and strawberries) — a big concern for growers.

  • Root damage from larvae in potted plants and soft-soil gardens, causing wilting or stunted growth.


️ How to Control Garden Weevil in Australia:

1. Cultural Control

  • Remove mulch and plant litter near trunks to reduce hiding spots.

  • Weed control: Especially around vine rows or fruit trees.

  • Cultivate soil in late spring to disturb larvae and pupae.

2. Physical Methods

  • Sticky trunk bands: Especially useful on young fruit trees and grapevines.

  • Night inspections with a torch: Hand-pick weevils off plants.

  • Barrier pastes (like insect glue) on trunks/pots to stop climbing adults.

3. Biological Control

  • Entomopathogenic nematodes (e.g., Heterorhabditis bacteriophora):

    • Apply to moist soil in late spring or early summer when larvae are active.

    • Available from biological control suppliers in Australia (e.g., Bugs for Bugs, Bioworks).

4. Chemical Control (Use with care)

  • Evening foliar sprays: Adults are nocturnal, so treat late in the day.

  • Registered actives may include:

    • Spinosad

    • Synthetic pyrethroids (e.g., bifenthrin)

  • Be careful around edible crops — check APVMA labels or use products specifically registered for fruit and vegetables.

✅ Always check labels for use on food crops and follow withholding periods.


Monitoring

  • Lay cardboard or hessian sacks around plant bases during the day — adults hide underneath.

  • Use pitfall traps or shake plants early morning to check for adult presence.

Garden weevil

Phlyctinus callosus
Scientific Name
Phlyctinus callosus
Pest Alias
Banded fruit weevil
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Hexapoda
Class:
Insecta
Informal:
Pterygotes
Subclass:
Pterygota
Order:
Coleoptera
Suborder:
Polyphaga
Superfamily:
Curculionoidea
Family:
Curculionidae
Subfamily:
Entiminae
Tribe:
Oosomini
Genus:
Phlyctinus
Species:
Phlyctinus callosus

Garden weevil (Phlyctinus callosus) for Australian conditions:


Garden Weevil in Australia

(Phlyctinus callosus, also known as the banded fruit weevil)

✅ Where It's a Problem:

  • Southern Australia: Especially in Western Australia, South Australia, Victoria, and parts of NSW.

  • Affects both commercial horticulture and home gardens.


Commonly Affected Plants in Aussie Gardens:

  • Grapes, apples, peaches, plums

  • Strawberries

  • Beans, broad beans

  • Roses, ornamentals

  • Some native plants, though usually less affected


What Damage Looks Like (Australian Context):

  • Notched leaf edges from adult feeding.

  • Cosmetic fruit damage (e.g., on grapes and strawberries) — a big concern for growers.

  • Root damage from larvae in potted plants and soft-soil gardens, causing wilting or stunted growth.


️ How to Control Garden Weevil in Australia:

1. Cultural Control

  • Remove mulch and plant litter near trunks to reduce hiding spots.

  • Weed control: Especially around vine rows or fruit trees.

  • Cultivate soil in late spring to disturb larvae and pupae.

2. Physical Methods

  • Sticky trunk bands: Especially useful on young fruit trees and grapevines.

  • Night inspections with a torch: Hand-pick weevils off plants.

  • Barrier pastes (like insect glue) on trunks/pots to stop climbing adults.

3. Biological Control

  • Entomopathogenic nematodes (e.g., Heterorhabditis bacteriophora):

    • Apply to moist soil in late spring or early summer when larvae are active.

    • Available from biological control suppliers in Australia (e.g., Bugs for Bugs, Bioworks).

4. Chemical Control (Use with care)

  • Evening foliar sprays: Adults are nocturnal, so treat late in the day.

  • Registered actives may include:

    • Spinosad

    • Synthetic pyrethroids (e.g., bifenthrin)

  • Be careful around edible crops — check APVMA labels or use products specifically registered for fruit and vegetables.

✅ Always check labels for use on food crops and follow withholding periods.


Monitoring

  • Lay cardboard or hessian sacks around plant bases during the day — adults hide underneath.

  • Use pitfall traps or shake plants early morning to check for adult presence.