Lepidopteran species

Number of lepidopteran species whose sex pheromones were found to be the indicated component... 

Some lepidopteran species secret methyl-branched chemicals for their sexual communication. These have been abbreviated with Me to indicate the position of the methyl group. Disparlure (Me2,epo7-18 H) is a well-known pheromone identified from Lymantria dispar [3] and two other species in the same genus, L.fumida [95] and L. monacha [96]. L. monacha also secrets an... 

For example, gossypol, a terpenoid substance, is an allomone that limits herbivory by several lepidopteran species on cotton (Gossypium spp., MalvaceaeK whereas it is a kairomone for the boll weevil, Anthonomus grandis and acts as a feeding stimulant for this insect (3,21,22) ... 

V planifolia is the only orchid used for industrial purposes (in the food and cosmetic industries). Vanilla species are used as food plants by the larvae of some Lepidopteran species, including Hypercompe eridanus and H. icasia. The seeds will not germinate in normal soil they need a certain symbiotic fungus. 

The fatty acid content of the ovipositor tips of a variety of Lepidopteran species were determined by acid methanolysis followed by gas-liquid chromatography (GLC) (4.). In each case, unusual fatty acids corresponding to pheromone components were identified. For example, the tufted apple bud moth, Platynota idaeusalis, uses (E)—11—tetradecenyl acetate and alcohol as pheromone components (5.) and also contains (E) -11—tetradecenoic acid in its ovipositor tip. In several species, the fatty acid content of the rest of the insect also was determined. In each instance, the unusual fatty acid components were found only in the ovipositor tip or in the pheromone-producing gland located in the tip. 

For these reasons we decided to conduct an in-depth study of the chemical communication systems of certain lepidopteran species. We chose to first investigate Heliothis virescens (.F.) (.Lepidoptera Noctuidae) because it is an important economic pest and because of our previous experience with it (. 1J. Additionally, males of this species can be mated with Heliothis subf lexa (.Gn.) females to produce sterile hybrid males (2) ... 

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