Female (4.0mm bl) of parthenogenetic generation hatched 10/13/10 from a beaked twig gall on California Scrub Oak, Quercus berberidifolia, collected in Black Star Canyon, Orange County, CA. 9/6/10. © Peter J. Bryant.

Beaked Twig Gall Wasp

Disholcaspis plumbella

Hymenoptera: Cynipidae

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Female (4.0mm bl) of parthenogenetic generation hatched 10/13/10 from a beaked twig gall on California Scrub Oak, Quercus berberidifolia, collected in Black Star Canyon, Orange County, CA. 9/6/10. © Peter J. Bryant.
Female (4.0mm bl) of parthenogenetic generation hatched 10/13/10 from a beaked twig gall on California Scrub Oak, Quercus berberidifolia, collected in Black Star Canyon, Orange County, CA. 9/6/10. © Peter J. Bryant.

Female (4.0mm bl) of parthenogenetic generation hatched 10/13/10 from a beaked twig gall on California Scrub Oak, Quercus berberidifolia, collected in Black Star Canyon, Orange County, CA. 9/6/10. © Peter J. Bryant.
Beaked twig gall (10mm small diameter) from which this wasp emerged, showing exit hole. Collected from California Scrub Oak, Quercus berberidifolia, in Black Star Canyon, Orange County, CA. 9/6/10. © Peter J. Bryant.

Larva in bissected beaked twig gall on California Scrub Oak, Quercus berberidifolia, collected in Black Star Canyon, Orange County, CA. 9/6/10. © Peter J. Bryant.
Larva in bissected beaked twig gall on California Scrub Oak, Quercus berberidifolia, collected in Black Star Canyon, Orange County, CA. 9/6/10. © Peter J. Bryant.

Larva in protective chamber inside a beaked twig gall similar to those shown on this page. Laguna Beach, Orange County, CA. Collected 07/21/10; Bissected and photographed 09/14/10. © Peter J. Bryant.
Beaked twig gall on California Scrub Oak, Quercus berberidifolia, Little Sycamore Canyon, Laguna Coast Wilderness Park, Laguna Beach, Orange County, CA. 9/17/10. © Peter J. Bryant.

Beaked twig gall on California Scrub Oak, Quercus berberidifolia, Little Sycamore Canyon, Laguna Coast Wilderness Park, Laguna Beach, Orange County, CA. 6/6/10. © Peter J. Bryant.
Beaked twig gall on California Scrub Oak, Quercus berberidifolia, San Juan Trail, Orange County, CA. 6/8/10. © Peter J. Bryant.

Beaked twig galls on California Scrub Oak, Quercus berberidifolia. State Spur, near Black Star Canyon, Orange County, CA. 2/24/11. © Ron Vanderhoff
Beaked twig galls on California Scrub Oak, Quercus berberidifolia. State Spur, near Black Star Canyon, Orange County, CA. 2/24/11. © Ron Vanderhoff