Hey all,
Spotted what looks like a "Corrhenes stigmatica" (Crownborer) on my little maple tree last night, no sign if it anywhere today ... anything to worry about? Reading online, they attack soybeans and lucerne.
- Daniel
Corrhenes stigmatica: Friend or foe?
-
- Aussie Bonsai Fan
- Posts: 653
- Joined: January 18th, 2011, 9:21 am
- Favorite Species: Banksia, Fig, Jacaranda, Maple, Oak
- Bonsai Age: 12
- Location: Sydney
- Has thanked: 523 times
- Been thanked: 228 times
- Raging Bull
- Aussie Bonsai Fan
- Posts: 835
- Joined: January 3rd, 2017, 9:29 am
- Favorite Species: Pines
- Bonsai Age: 5
- Bonsai Club: Gold Coast-Tweed
- Location: Gold Coast Qld
- Has thanked: 81 times
- Been thanked: 199 times
Re: Corrhenes stigmatica: Friend or foe?
Hi Daniel,
According to the Qld Dept. of Agriculture
this insect attacks only lucerne and soy bean plants, hence its common name of Lucerne Crown Borer. It lays eggs on these plants which when the grubs hatch they burrow into the seed heads.
Hope this allays your fears.
Frank.
According to the Qld Dept. of Agriculture

Hope this allays your fears.
Frank.
-
- Aussie Bonsai Fan
- Posts: 653
- Joined: January 18th, 2011, 9:21 am
- Favorite Species: Banksia, Fig, Jacaranda, Maple, Oak
- Bonsai Age: 12
- Location: Sydney
- Has thanked: 523 times
- Been thanked: 228 times
Re: Corrhenes stigmatica: Friend or foe?
Thanks Frank! I'll rest a little easier. Not sure what it's doing in Sydney, holiday I guess. Was worried this might have been a Bonsai Crown Borer instead, haha.