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The hatching larvae nourish themselves with the nutritive tissue of the galls, in which they are otherwise well-protected from external environmental effects. The host plants, and the size and shape of the galls are specific to the majority of gall wasps, with about 70% of the known species parasitizing various types of oak, inducing oak galls ...
Atrusca trimaculosa, also known as the woollybear gall wasp, is a species of gall wasp. [2] [3] This wasp is found on a variety of oak trees, including valley oak, blue oak, and Oregon oak. Its galls are 3–4 mm wide, round, and covered in stiff hairs. The galls are located on leaves, and often clustered together.
Callirhytis seminator, the wool sower, is a species of gall wasp in the family Cynipidae. [1] The adult wasps are about 1/8" in length and dark brown in color. The larvae are white and fat and have no legs. The wasps only lay eggs on white oak trees and only in the spring. They lay the egg in a gall, a round, white structure resembling a cotton ...
Jumping oak galls are caused by a very tiny, native, stingless wasp (Neuroterus sp.) which lays eggs in leaf buds. As the leaf develops, pinhead-sized galls, also referred to as abnormal plant ...
Atrusca brevipennata, formerly Andricus pellucidus, also known as the little oak-apple gall wasp, is a locally common species of cynipid wasp that produces galls on oak trees in North America. [1] The wasp oviposits on shrub live oak and Gambel oak leaves. [1] The larval chamber is at the center of the gall, connected to the husk by slender ...
[1] [2] The gall is a firm swelling with a scar at the apex and contains several cells, each with a larva. [1] [2] It is initially green but becomes brown and woody as it ages. [1] [2] [5] The galls and timing of the agamic generation are unknown. [3] Parasitoids of the oak petiole gall wasp include the crypt-keeper wasp (Euderus set). [6]
Trichoteras coquilletti, formerly Andricus coquilletti, also known as the little oak-apple gall wasp, is a fairly common species of cynipid wasp that produces galls on oak trees in North America. [1] This wasp oviposits on the underside of the leaves of huckleberry oaks and canyon live oaks. [1] The larval chamber is at the center of the gall ...
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 ...