Myllocerus viridanus

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Myllocerus viridanus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Infraorder: Cucujiformia
Family: Curculionidae
Genus: Myllocerus
Species:
M. viridanus
Binomial name
Myllocerus viridanus
Fabricius, 1775
Synonyms
  • Curculio viridanusFabricius, 1775
  • Myllocerus viridanusBoheman, 1834
  • Myllocerus angustifronsFaust, 1897

Myllocerus viridanus, often known as sweet potato beetle, [1] pod borer [2] or ash weevil, [3] is a species of weevil native to India and Sri Lanka. [4] [5] [6]

Contents

Description

This species has a body length is about 3 to 4.5 mm. Body black, with dense uniform light green scales. Sometimes color varying to pale greenish white with chalky-white efflorescence. Head with yellow and with metallic green scales at the apex of the rostrum. Head narrowed from back to front. Eyes dorsal. Forehead with a rounded impression. Rostrum evidently longer than the head. Mandibles reddish brown. Antennae black or piceous. Prothorax subconical. Elytral striae are very narrow and covered with fine longitudinal punctures. Legs black, with green scales. [7]

Biology

Adult weevils have been observed in numerous plants as they are known to defoliate the tender leaves and shoots extensively. [8] Grubs feed on roots resulting in wilting of plants. Hence considered as serious polyphagous pest of economic importance. [9] [10]

Adults can be destroyed by using Beauveria bassiana , an entomopathogenic fungus. [11]

Host plants

References

  1. ↑ "Pherobase Invasive :: Species Detail - Myllocerus viridanus". www.pherobase.com. Retrieved 2021-08-18.
  2. ↑ "Insect Pest Information". cib.res.in. Retrieved 2021-08-18.
  3. ↑ Sharma, S. P.; Kishore, Ram; Gupta, Rakesh; Sinhadeo, S. N.; Sinha, B. R. R. P. (October 2003). "Evaluation of Azadirachtin Against Immature Stages of Myllocerus viridanus Fab. (Coleoptera: Curculionidae) , a Pest of Primary Tasar Food Plants". Indian Forester: 1217–1221. doi:10.36808/if/2003/v129i10/2398 (inactive 27 September 2025).{{cite journal}}: CS1 maint: DOI inactive as of September 2025 (link)
  4. ↑ "Myllocerus viridanus". CABI Compendium. 2021. doi:10.1079/cabicompendium.34386.
  5. ↑ Padmaja, P.G. (2016). "Insect Pest Resistance in Sorghum". Biotic Stress Resistance in Millets. pp. 105–145. doi:10.1016/B978-0-12-804549-7.00004-4. ISBN   978-0-12-804549-7.
  6. ↑ Chandel, R.S.; Chandla, V.K.; Verma, K.S.; Pathania, Mandeep (2013). "Insect Pests of Potato in India". Insect Pests of Potato. pp. 227–268. doi:10.1016/B978-0-12-386895-4.00008-9. ISBN   978-0-12-386895-4.
  7. ↑ Marshall, Guy Anstruther Knox (1916). Coleoptera. Rhynchophora:-Curculionidæ. The Fauna of British India. doi:10.5962/bhl.title.9237. hdl:2027/coo.31924018326714. OCLC   1042127230.[ page needed ]
  8. ↑ "TNAU Agritech Portal :: Crop Protection". agritech.tnau.ac.in. Retrieved 2021-08-18.
  9. ↑ Rajan, N. Ranjini; Ghosh, S. M. (2019). "New record of host plants of Myllocerus viridanus Fabricius (Coleoptera: Curculionidae), a major polyphagous pest from Kerala, India". Journal of Entomological Research. 43 (2): 189–192. doi:10.5958/0974-4576.2019.00037.9.
  10. ↑ Ranjini Rajan, N; Ghosh, SM; Jijijoseph, V. "Dna Barcoding And Evolutionary Lineage Of Grey Weevil, Myllocerus Viridanus (Fabricius) (Coleoptera: Curculionidae)". International Journal of Recent Scientific Research.[ predatory publisher ]
  11. ↑ Sankaran, K. V.; Mohanadas, K.; Mohamed Ali, M. I. (1989). "Beauveria bassiana (Bals.) Vuill., a possible biocontrol agent against Myllocerus viridanus Fabr. and Calopepla leayana Latreille in south India". Current Science. 58 (8): 467–469. INIST   7229464.
  12. ↑ S. Pachaiyappan; S. Durairaj (2018). "Nutritional Indices as an Index to Assess the Feeding Potentials of Forest Insect Pests, Dereodus Denticollis and Myllocerus Viridanus". International Journal of Current Research and Modern Education. 3 (1): 514–518. doi:10.5281/zenodo.1239810.
  13. 1 2 Mukhtar Ahmed, Mukhtar Ahmed (1989). "Feeding diversity of Myllocerus viridanus Fab. (Coleoptera: Curculionidae) from south India". Indian Forester. 115 (11): 832–838.
  14. ↑ Khairmode, Pallavi V.; Sathe, T.V. (2014). "Seasonal abundance of weevils Myllocerus spp. on mulberry in Kolhapur region" (PDF). International Journal of Science, Environment and Technology. 3 (1): 203–207.
  15. ↑ "BRINJAL ::MAJOR PESTS::ASH WEEVILS". eagri.org. Retrieved 2021-08-18.
  16. ↑ "ENTO 331 :: Lecture 03 :: Pests of Sorghum". eagri.org. Retrieved 2021-08-18.
  17. ↑ "Pod Borer". projectnoah. Retrieved 2021-08-18.
  18. ↑ Mishra, P. K.; Singh, R. N.; Jayswal, J.; Thangavelu, K. (1995). "Premiere observation de Myllocerus viridanus Fabricius (Coleoptera: Curculionidae) parasitant Terminalia arjuna Bedd. et Terminalia tomentosa W. & A." [First observation of Myllocerus viridanus Fabricius (Coleoptera: Curculionidae) parasitizing Terminalia arjuna Bedd. and Terminalia tomentosa W. & A.](PDF). Séricologia (in French). 35 (1): 145–147. INIST   3612884.
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