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The reproduction of gall wasps is usually partly parthenogenesis, in which a male is completely unnecessary, and partly two-sex propagation. [2] Most species have alternating generations, with one two-sex generation and one parthenogenic generation annually, whereas some species produce very few males and reproduce only by parthenogenesis, [2] possibly because of infection of the females ...
[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]
Callirhytis quercusoperator (Osten Sacken, 1862) - Woolly catkin gall wasp; Callirhytis quercuspunctata (Bassett, 1863) - Gouty oak gall wasp; Callirhytis quercussuttoni (Ashmead, 1885) - Gouty stem gall wasp; Callirhytis quercusventricosa Bassett, 1864; Callirhytis quinqueseptum (Ashmead, 1885) [12] Callirhytis rubida Weld, 1921; Callirhytis ...
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 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.
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 ...
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