6mm bl, emerged from willow leaf gall. Aliso Canyon, Aliso Viejo, Orange County, CA. 4/2/10. © Peter J. Bryant

Willow Leaf Gall Sawfly

Pontania pacifica

Hymenoptera: Tenthredinidae

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6mm bl, emerged from willow leaf gall. Aliso Canyon, Aliso Viejo, Orange County, CA. 4/2/10. © Peter J. Bryant
Leaf galls on Arroyo Willow, Salix lasiolepis - view from upper side of leaf. El Moro Canyon, Crystal Cove State Park, Orange County, CA. 5/2/10. © Peter J. Bryant

Female ovipositing on willow, 5/2/10. © Peter J. Bryant
Female ovipositing on willow, showing the "saw" after which sawflies are named. 5/2/10. © Peter J. Bryant

Leaf galls on Arroyo Willow, Salix lasiolepis - view from upper side of leaf. El Moro Canyon, Crystal Cove State Park, Orange County, CA. 5/2/10. © Peter J. Bryant
Leaf galls on Arroyo Willow, Salix lasiolepis - view from lower side of leaf. One gall shows an exit hole. El Moro Canyon, Crystal Cove State Park, Orange County, CA. 5/2/10. © Peter J. Bryant

Larva emerged from willow leaf gall. Aliso Canyon, Aliso Viejo, Orange County, CA. 4/2/10. © Peter J. Bryant
Leaf galls on Arroyo Willow, Salix lasiolepis. Huntington Central Park, Huntington Beach, CA. 5-25-10. © Joan Avise
Parasitoids emerged from Willow Leaf Galls:

Ichneumonid Wasp, Lathrostizus sp.
Pteromalid Wasp
Eurytomid Wasp
Braconid Wasp

Braconid Wasp