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Bottlebrush Sawfly

Pterygophorus cinctus


Robust bodied, up to 25mm long, black head, strong orange and black pattern on thorax and banding on abdomen. Notable lack of waist like wasp. Some had feathery antennae and some had knobbly ones. Clear wings with dark veins.


Dozens on the trunk of large maleleuca


family: PERGIDAE
subfamily: Pterygophorinae

No species ID suggestions


Latimeria 7 years ago

Robust indeed! They look like they're wearing shoulder pads.

MartinL 7 years ago

They are likely to be mating but the overlap is curious. Maybe sawflies have an odd physiology. I guessed the male by its smaller size and the more ornate antennae makes sense too. Well done, this is a good study.

Mark Ridgway
Mark Ridgway 7 years ago

(the males are identifiable partly from the more complex shape to their antennae)

Mark Ridgway
Mark Ridgway 7 years ago

Thanks martin again. I just found it while searching for my next thing which looks like a fly. Maybe I've got that so wrong too. Stay tuned for another laugh...

MartinL 7 years ago

These guys confused me until I discovered sawflies. (Yes, those spitfires do grow up.) I had trouble with this spotting that looks kind of similar.
Note - shoulder pads are shiny and smooth - sawflies have no narrow waist as other hymenoptera do - antennae are pinnate rather than elbowed (ant-like). What do you think?

Sachin Zaveri
Sachin Zaveri 7 years ago

Nice Shot,

Victoria, Australia

Lat: -37.89, Long: 145.31

Spotted on Jan 4, 2012
Submitted on Jan 4, 2012

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