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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Symphyta" - Sawflies, Horntails, and Wood Wasps » Common Sawflies (Tenthredinidae) » Nematinae » Cladiini » Cladius » Bristly Roseslug Sawfly (Cladius pectinicornis)
Photo#355917
Sawfly larvae on rose bush in December - Cladius pectinicornis
Copyright © 2009 Beatriz Moisset

Sawfly larvae on rose bush in December - Cladius pectinicornis
Willow Grove, Montgomery County, Pennsylvania, USA
December 2, 2009
Size: 4.5-12 mm
Every year this rose bush clings to some leaves until December. They get full of holes, but it never occurred to me to check who was doing the damage.
These sawfly larvae range in size from 4.5 to 12 mm. They have lots of thin hairs. Are they Cladius difformis? And what are they doing in December?

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Sawfly larvae on rose bush in December - Cladius pectinicornis Sawfly larvae on rose bush in December - Cladius pectinicornis Sawfly larvae on rose bush in December - Cladius pectinicornis Sawfly larvae on rose bush in December - Cladius pectinicornis Sawfly larvae on rose bush in December - Cladius pectinicornis Sawfly larvae on rose bush in December - Cladius pectinicornis Sawfly larvae on rose bush in December - Cladius pectinicornis Sawfly larvae on rose bush in December - Cladius pectinicornis Sawfly larvae on rose bush in December - Cladius pectinicornis - female Sawfly larvae on rose bush in December - Cladius pectinicornis - male Sawfly larvae on rose bush in December - Cladius pectinicornis - male Sawfly larvae on rose bush in December - Cladius pectinicornis - male
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Contributed by Beatriz Moisset on 2 December, 2009 - 2:35pm
Last updated 11 February, 2019 - 2:31pm

Moved
Moved from Common Sawflies.
… Beatriz Moisset, 15 January, 2010 - 7:53pm login or register to post comments

Tenthredinidae
Cladius difformis is correct. They go though multiple generations a year and its not too uncommon to see them late in the fall, even December, if the weather stays warm enough.
… Dave Smith, 15 January, 2010 - 7:31pm login or register to post comments

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