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bioRxiv · 10.1101/2024.09.24.614774

Grey Pineapple Mealybug, Dysmicoccus neobrevipes Beardsley: A New Devastating Pest of Tuberose in India

Firake, D. M.·Joshi, S.·Kumar, P. N.·Saha, T. N.·Dantuluri, V. S. R.·Prasad, K. V.
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Abstract

Tuberose (Agave amica) is a highly valued flower crop in India, known for its consistently high returns and ability to thrive in various climatic conditions. Severe outbreaks of the grey pineapple mealybug, Dysmicoccus neobrevipes Beardsley (Hemiptera: Pseudococcidae), have been observed in several villages of the Pune district, Maharashtra (India), since 2021, leading to significant economic losses. This report provides an illustrative morphological diagnosis of D. neobrevipes and basic information on its field establishment, impact on tuberose crops, nature of the damage and field symptoms etc. Surveys conducted in major tuberose-growing areas of Pune district (Maharashtra) revealed that the mealybug primarily infests the underground and basal portion of tuberose plants, causing stunted growth, drooping, and ultimately death of the plants. D. neobrevipes produces honeydew, fostering sooty mold growth that impairs photosynthesis, reduces flower yield. It also infests tuberose bulbs, spoiling them in storage. Based on primary scientific literature, this study represents the first scientifically confirmed record of D. neobrevipes as a new pest of tuberose in India. The ant species Solenopsis geminata was found attending to mealybug colonies, aiding their spread and creating a nuisance for farmers during routine field activities. A total of 87.09% of the surveyed fields (n=62) showed mealybug infestation, ranging from 68% to 97%. Raising awareness among the farmers and implementing regular monitoring in tuberose-growing areas are crucial steps for developing effective management practices and preventing the further spread of this pest to other regions.

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Firake, D. M., Joshi, S., Kumar, P. N., Saha, T. N., Dantuluri, V. S. R., Prasad, K. V.. 2024-09-26. Grey Pineapple Mealybug, Dysmicoccus neobrevipes Beardsley: A New Devastating Pest of Tuberose in India. https://doi.org/10.1101/2024.09.24.614774

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