Yponomeuta evonymellus

The moth Yponomeuta evonymellus does not respond be-haviorally to pmnasin (19) which occurs in its host plant. Other species of this genus, however, are both sensitive anc deterred (Stadler, 1984). 

Male discrimination among various release rates has been reported by several authors. Reproductive isolation among four sympatric ermine moths Yponomeuta evonymellus, Y. cagnagellus, Y. padellus and... 

Receptor cells sensitive to host plant compounds that stimulate feeding have also been identified in several species of Yponomeuta moths. Y. cagnagellus feeding on Euonymus has one dulcitol (sugar)-sensitive cell in the medial and one in the lateral sensillum styloconicum (van Drongelen, 1979,1980). Another species, Y. evonymellus, is also stimulated by dulcitol at the sensory and behavioral level even though the compound does not occur in its host plant. This contradictory result may be explained by the possible presence of dulcitol in an ancestral host plant (van Drongelen, 1979,1980). 

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