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Amphibolips quercuspomiformis, also known as the apple gall wasp or live oak apple gall wasp, is a species of gall wasp. It induces galls in coast live oak and interior live oak trees. Like many gall wasps, it has two alternating generations which induce differing galls: an all-female parthenogenic generation, and a bisexual generation. The ...
Cystotheca lanestris, the live oak witch's broom fungus, is a species of mildew that infects buds and induces stem galls called witch's brooms on oak trees in California, Arizona, and Mexico in North America. [2] [3] Witch's brooms are "abnormal clusters of shoots that are thickened, elongated, and highly branched."
Dryocosmus dubiosus is an abundant species of cynipid wasp that produces galls on oak trees in California in North America. [1] [2] Commonly known as the two-horned gall wasp, the wasp oviposits on the leaves and catkins of coast live oaks and interior live oaks. [1] After the eggs hatch, the resulting gall form looks like it has a set of bull ...
The all-female generation's galls appear in late spring. These round, 1 mm across galls occur on the underside of leaves, and eventually detach and fall into the leaf litter. Adults emerge early the following spring and lay eggs for the bisexual generation. This generation induces galls that are integral to the leaf. [2] [1] Adult wasps are .75 ...
Callirhytis perfoveata, formerly Andricus perfoveata, the leaf ball gall wasp, is a species of hymenopteran that produces leaf galls on oak trees in California in North America. [1] The wasp oviposits on coast live oak , interior live oak , and occasionally on California black oak , and induces what appears to be a roughly spherical gall ...
Most species of gall wasps live as gall-formers on oaks. One of the best-known is the common oak gall wasp ( Cynips quercusfolii ), which induces characteristic, 2-cm in diameter, spherical galls on the undersides of oak leaves.
An oak apple or oak gall is a large, round, vaguely apple-like gall commonly found on many species of oak. Oak apples range in size from 2 to 4 centimetres (1 to 2 in) in diameter and are caused by chemicals injected by the larva of certain kinds of gall wasp in the family Cynipidae .
Melikaiella flora, formerly Callirhytis milleri, the live oak petiole gall wasp, is a species of hymenopteran that produces leaf galls on coast live oak, interior live oak, and canyon live oak trees in California in North America. [1] [2] The gall often subsumes the entire petiole and occasionally part of the leaf body. [1]