iarjalsIARJALSIARJALS2708-5104https://doi.org/10.47310/iarjals.2024.v05i02.003Biology of Cavariella aegopodii on Salix babylonica in IndiaNidhiDhatwaliaAssistant Professor, Department of Zoology, Govt Degree College Theog, Shimla-171201In the present study, detailed biology of Cavariella aegopodii has been studied during spring (March-April), summer (May-June), autumn (September-October) and winter (January-February) seasons under laboratory conditions to ascertain the pre-reproductive, reproductive and post-reproductive periods. Studies on the biology of Cavariell aaegopodii revealed that morphs of this species occurring on willow plants are parthenogenetic wingless female, parthenogenetic winged female, winged female sexuparae, oviparae and males. All the parthenogenetic wingless females undergo four regular moults resulting in five instar stages. In the winter season, the average nymphal period as well as pre-reproductive and reproductive periods is longer. The winged female sexuparae start appearing in apterous parthenogenetc colonies at the end of July month and their appearance continues upto November. Ovipara are apterous and males are winged.The present investigations were carried out in Shimla, Mashobra, Shoghi and Solan localities and as well as on plants maintained under laboratory conditions.