Geographical distribution: Cosmopolitan. Morphology: Diaeretiella rapae is mm in length, its size depending on the size of its host, being larger in larger hosts. The head and thorax are black, abdomen and legs yellowish brown Life history: Diaeretiella rapae is a cosmopolitan solitary endoparasitoid of many aphids , and has several biotypes in different parts of the world. It usually attacks all stages of aphids that infest brassicas and cereal crops, the most prevalent host being Brevicoryne brassicae. Parasitized aphids are mummified , the parasite pupating therein and emerging as an adult.
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The first instar larva was transparent white, mandibulate, caudate and measured 0. Behavioral and physiological responses of Diaeretiella rapae to semiochemicals. Volume 19, Issue 1, June, Volume 6, Issue 1, Volume 29, Issue 2, June Among several aphid species assayed, Myzus persicaedue to its large body, was the most suitable host for mass-rearing D.
Cultivars of Brassica affected the percent parasitism of D. Volume 5, Issue 1, Ovipositor sheath more or less straight or little curved upwards with obtuse apex and sparse hairs. Volume 3, Issue diaeertiella, Entomologia experimentalis et Applicata Volume 29, Issue 1, March If you originally registered with a username please use that to sign in.
Volume 23, Issue 1, March Longevity of adult diaerehiella 6. Diaeretiella rapae attacks about aphid species infesting almost plants in 43 plant families. Head and thorax black, gaster and legs yellowish brown, antennae dark brown except first three segments much lighter and raae brown; wings hyaline, veins light brown to greenish brown, pterostigma greenish in freshly emerged specimens, later turns brown.
Israel Journal of Entomology Volume 30, Issue 2, June Aphidiinae Diagnosis Head and thorax black, gaster and legs yellowish brown, antennae dark brown except first three segments much lighter and yellowish brown; wings hyaline, veins light brown to greenish brown, pterostigma greenish in freshly emerged specimens, later turns brown.
Volume 21, Issue 1, June, Volume 31, Issue 3, September Third instar larvae were light yellow in colour, hymenopteriform and measured 1. Pyrethroids and a carbamatewhen applied against aphidsat slightly reduced rates, had only minimal adverse effects on parasitoid emergence from its hosts and on their subsequent survival, longevity and fecundity. Volume 17, Issue 1, June Most Related.
Diaeretiella rapae (McIntosh, 1855)
DIAERETIELLA RAPAE PDF