AULACASPIS TUBERCULARIS PDF

It is currently rated Q, and a pest rating proposal is required to support a permanent pest rating. Immatures and adult females of this scale are covered by a white scale cover that is semi-circular in females and elongate in males. Immatures and adult females feed on plant fluids. Aulacaspis tubercularis is highly polyphagous and damages a wide range of perennials, ornamentals, and fruit trees.

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Morphology: The female body is elongated, its anterior part wider than the rest of the body. The dorsal macroducts are two-barred, arranged in transverse rows. The perivulvar pores occur in five clusters on either side of the anus. The white female shield is rounded, with the dark, dorsal juvenile exuvium at one end; the elongated male shield is also whitish, its exuvium at its apex.

Geographical distribution: In most tropical and subtropical countries; Distribution Maps of Pests. Series A, Host plants: This scale infests several plants of commercial value, including avocado , coconut Cocos nucifera L. Life history: In Egypt the pest has annual, partially overlapping population peaks, in spring, summer, autumn and winter. The pest is more abundant on lower, south-facing aspects of trees, and its crawlers are probably dispersed by wind currents.

Economic importance: An important pest of mango in Egypt. Its feeding on fruits cause conspicuous pink blemishes around the feeding sites, cosmetic damage that renders the fruits unmarketable for export.

Such fruits may drop or become smaller and lacking in juice. Infested leaves turn pale-green or yellow and ultimately die, young twigs dry up and there are fewer blossoms. Most damage is caused to late-maturing cultivars. Severe infestations may retard mango growth in the nursery, as young trees are most vulnerable to excessive leaf loss and to twig death, especially during dry seasons. Management Horticultural control: Pruning and removal of infested twigs and foliage.

Chemical control: Sprays with oils provided good control. The period from April to August was most suitable for the chemical control of this pest In Egypt.

Biological control : Important natural enemies include some Aphytis spp. Some of these parasitoids were mass reared, released in mango orchards and greatly reduced pest numbers. Known enemies include Chilocorus bipustulatus and other Coccinellidae as well as Cybocephalidae.

References Abo-Shanab, A. Egyptian Academy Journal of Biological Sciences 5: Daneel, M. Biological control of mango scale, Aulacaspis tubercularis, in South Africa. Biological control of the mango scale Aulacaspis tubercularis Newstead Coccidae: Diaspididae by a parasitoid Aphytis chionaspis Ren Hymenoptera: Aphelinidae : Acta Horticulturae Greathead, D.

Dispersal of the sugar-cane scale Aulacaspis tegalensis Zhnt. Bulletin of Entomological Research Leaf penetration of Aulacaspis tubercularis Hemiptera: Diaspididae stylet in mango. Florida Entomologist Labuschange, T. Israel Journal of Entomology — Nabil, H. Ecological studies of Aulacaspis tubercularis Diaspididae: Hemiptera and its natural enemies infesting mango trees in Sharkia Governorate, Egypt.

Egyptian Academy Journal of Biological Sciences. Salem, H. Seasonal abundance, number of generations and associated injuries of the white mango scale, Aulacaspis tubercularis Mangifera Newstead Homoptera: Diaspididae attacking mango orchards. Terefe, T. ABC Research Alert 2 2 : Viljoen, H.

M and De Villiers, E. Effectiveness of fenvalerate and monocrotophos against the mango scale, Aulacaspis tubercularis Newstead.

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Mango Scale | Aulacaspis tubercularis Newstead

Posee dimorfismo sexual, es decir que hembras y machos tienen diferentes aspectos. Los frutos afectados son rechazados durante la recoleccion en el campo y en las empacadoras, en donde aceptan solamente entre 1 a 2 lesiones de escamas por fruto. Una hembra deposita entre 32 y huevecillos durante su vida, pudiendo un solo insecto infectar todos los frutos de un pedunculo, de alli la importancia de realizar muestreos o evaluaciones permanentes desde el inicio de floracion a la cosecha. El muestreo del insecto se realiza fregando con las yemas de los dedos las colonias de escamas machos para observar si estan vivas o muertas; estan vivas cuando en los dedos queda una substancia amarillo anaranjada.

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Aulacaspis tubercularis

Morphology: The female body is elongated, its anterior part wider than the rest of the body. The dorsal macroducts are two-barred, arranged in transverse rows. The perivulvar pores occur in five clusters on either side of the anus. The white female shield is rounded, with the dark, dorsal juvenile exuvium at one end; the elongated male shield is also whitish, its exuvium at its apex.

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