Occurrence of Invasive Papaya Mealybug, Paracoccus marginatus Williams & Granarade Willink (Hemiptera: Pseudococcidae) on Ipomoea carnea in Gujarat

Author: S.M. Chavan

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Abstract

This paper reports the occurrence of invasive papaya mealybug, Paracoccus marginatus Williams & Granara de Willink (Hemiptera: Pseudococcidae) on a medicinal herb, Ipomoea carnea in Gujarat. Eggs are greenish yellow and are laid in an egg sac and entirely covered with white wax. The ovisac is developed ventrally on the adult female. Nymphs and adults generally congregated along the terminal shoots and all areas of the tender leaves. The adult female is yellow and is covered with a white waxy coating. It was found to damage various parts including the leaves, stems, and tender shoots. Sucking the sap by insect resulted in curling, crinkling, rosetting, twisting, general leaf distortion and finally sooty mould was developed. This is the first report from Gujarat and perhaps from India. By considering the importance of I. carnea in many fields particularly pesticidal property against many pests, there is need of further study, a strict monitoring of this pest

Keywords

Papaya mealybug, Paracoccus marginatus, Ipomoea carnea, First report, sporadic infestation, Gujarat

Conclusion

From the above study, it can be concluded that, the occurrence of invasive papaya mealybug, Paracoccus marginatus Williams & Granara de Willink (Hemiptera: Pseudococcidae) has been first time reported on a medicinal herb, Ipomoea carnea in Gujarat. Eggs are greenish yellow and are laid in an egg sac and entirely covered with white wax. The ovisac is developed ventrally on the adult female. Nymphs and adults generally congregated along the terminal shoots and all areas of the tender leaves. The adult female is yellow and is covered with a white waxy coating. It was found to damage various parts including the leaves, stems, and tender shoots. Sucking the sap by insect resulted in curling, crinkling, rosetting, twisting, general leaf distortion and finally sooty mould was developed

References

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How to cite this article

S.M. Chavan (2024). Occurrence of Invasive Papaya Mealybug, Paracoccus marginatus Williams & Granarade Willink (Hemiptera: Pseudococcidae) on Ipomoea carnea in Gujarat. Biological Forum – An International Journal, 16(4): 139-142