Abstract
Ultra structural study on different sensory structure and some associated body parts of mango mealy bug, Drosicha mangiferae (G.) by scanning electron microscopy
Highlights
Mango mealy bug, Drosicha mangiferae (Stebbing, 1903) belonging to family Margarodidae and suborder Sternorrhyncha (Hemiptera: Coccoidea) is an important insect pest to mango orchards rendering huge damage to the growing mango fruits and makes it unfit for human consumption
Mango mealy bug for the most part depend on various kinds of sensilla that are disseminated on various body parts like mouthparts, legs, antenna, wings, genitalia to distinguish legitimate food source (Catala, 1997)
Four diverse sort of sensilla were found in the antenna to be specific they were sensilla trichoidea (St), sensilla chaetica (SCh), sensilla basiconica (Sb)and sensilla Coeloconica (SCo)
Summary
Drosicha mangiferae (Stebbing, 1903) belonging to family Margarodidae and suborder Sternorrhyncha (Hemiptera: Coccoidea) is an important insect pest to mango orchards rendering huge damage to the growing mango fruits and makes it unfit for human consumption. Out of all the tangible structures, antennary and labial sensilla are the for the most part conveyed structures that are used by Sternorrhyncha for investigating plant surface Both and chemical and physical ‘external’ cues changes the food searching behaviour of insect for host plant (Backus, 1988).The ‘pre-feeding’ detection of plant by an insect consists of recurring ‘rubbing’ of leaf exterior by and labial tips and antenna. Works so far done on the sensory structure of mealy bug was based on the study of other mealy bugs but there is no published report of sensory structures of mango mealy bug (D. mangiferae) concerned with conclusive detail structural representation Keeping these in mind a study mostly on the ultra structure of antennary, legs and mouth parts of 2nd instar nymphs of mango mealy bug was done in the present study. The tungsten warmed fiber was utilized to examine for every platinum covered specimen (Figure 1d and 1e)
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