Claim 1: a method to cause the death or the slowing of Physical Development of an insect that includes providing a Bug in the diet of at least a recombinant RNA Silencing Element comprises at least one essentially identical or essentially complement What a fragment of a sequence of target Gene of the Insect.Where the sequence of the target Gene is selected from the group consisting of the SEQ ID no. 1 859, and where the intake of said recombinant RNA by The Insect has resulted in the death or enlentencimiento The Physical Development of the Insect.Claim: a 17 insecticide composition comprising an effective amount of a recombinant RNA Molecule, where the recombinant RNA Molecule comprises at least a contiguous segment of 18 nucleotides or more with a sequence of approximately 95% to about 100% of co Mplementariedad with a fragment of a Target Gene of an insect that infects a Plant,And where the target Gene is a DNA Sequence which is selected from the group consisting of the SEQ ID no. 1 859. Claim 21: a Plant treated with the insecticide Composition of claim 17 or a Plant grown from Seed treated with the insecticide Composition of claim 17, wherein Said Plant shows Enhanced resistance to the Insect.Claim 25, the plant has improved resistance against an insect, which provides the method of claim 22, or propagables fruits, Seeds or parts of the plant.Reivindicación 1: Un método para provocar la muerte o el enlentecimiento del desarrollo físico de un insecto que comprende proporcionar en la dieta de un insecto al menos un ARN recombinante que comprende al menos un elemento de silenciamiento esencialmente idéntico o esencialmente complementario a un fragmento de una secuencia de gen diana de dicho insecto, donde dicha secuencia del gen diana se selecciona del grupo que consta de las SEQ ID Nº 1 - 859, y donde la ingestión de dicho ARN recombinante por parte de dicho insecto tiene como consecuencia la muerte o el enlentencimiento del desarrollo físico de dicho insecto. Re
