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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 ...
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 ...
The gall itself is a typical oak apple gall in appearance, roughly spherical and varies from greenish to reddish or orange depending on host, age and environmental conditions. The galls range in size from a 2–14 cm across and often contain multiple larvae as well as parasites and other species that form a mutual relationship by feeding off ...
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 ...
Andricus foecundatrix (formerly Andricus fecundator) is a parthenogenetic gall wasp which lays a single egg within a leaf bud, using its ovipositor, to produce a gall known as an oak artichoke gall, oak hop gall, larch-cone gall or hop strobile [1] [2] The gall develops as a chemically induced distortion of leaf axillary or terminal buds on pedunculate oak (Quercus robur) or sessile oak ...
Cynipini is a tribe of gall wasps. These insects induce galls in plants of the beech and oak family, Fagaceae. [1] They are known commonly as the oak gall wasps. [2] It is the largest cynipid tribe, with about 936 [3] to 1000 [2] recognized species, most of which are associated with oaks. [2] The tribe is mainly native to the Holarctic. [3 ...
The asexual generation gall consists of an inner capsule of mature galls with a woolly covering, typically appearing on the underside of leaves along the mid-vein. A mature gall measures 1.0–7.0 mm in diameter and 2–3 mm high. The woolly covering varies from creamy white to yellowish-white when older, and the inner capsule is light brown.
Amphibolips confluenta Spongy Oak Apple Gall Wasp; Amphibolips cookii Oak Apple Gall Wasp; Amphibolips nubilipennis Translucent Oak Gall Wasp; Amphibolips quercusinanis Larger Empty Oak Apple Wasp [11] Amphibolips quercusjuglans Acorn Plum Gall Wasp; Amphibolips quercusostensackenii Small Oak Apple Gall Wasp; Amphibolips quercuspomiformis Live ...