Myllocerus curvicornis

Myllocerus curvicornis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Infraorder:	Cucujiformia
Family:	Curculionidae
Genus:	Myllocerus
Species:	M. curvicornis
Binomial name
Myllocerus curvicornis (Fabricius, 1792)
Synonyms
Curculio curvicornisFabricius, 1792 Myllocerus transmarinusBoheman, 1834

Myllocerus curvicornis, commonly known as coconut ash weevil, ^[1] is a species of weevil found in India and Sri Lanka. ^{[2] [3]}

Description

This species has a body length is about 5 to 7.5 mm. Body black or piceous with grey and brown scales. Dorsal surface of the prothorax is dark brown with a narrow central pale brown line. Sometimes, prothorax is paler brown with a dark brown stripe laterally. Elytra dark or pale brown dorsally, with more or less small grey spot mottling. Sides of head, prothorax and elytra, and the ventrum are greyish or whitish. Elytral margins are with some brown spots. Eyes lateral, and the forehead is broad. Rostrum longer than the head and slightly dilated at the apex. Antennae piceous, with depressed grey setae. Prothorax transverse, with slightly rounded sides. Elytra rather broad with clear punctures. Elytral setae very short and recumbent. Legs piceous with grey scales. ^[4]

Adult weevils are polyphagous that destroy foliage of the plants such as Cocos nucifera , Dalbergia sissoo , Theobroma cacao , Camellia sinensis , Psophocarpus tetragonolobus and Rosa . ^{[5] [6] [7] [8]}

In biological control, adults can be controlled by the natural predators such as Rhynocoris fuscipes . ^[9]

References

1. Josephrajkumar, A.; Rajan, P.; Mohan, Chandrika; Thomas, R. J. (February 2011). "First record of Asian grey weevil (Myllocerus undatus) on coconut from Kerala, India". Phytoparasitica. 39 (1): 63–65. Bibcode:2011Phyto..39...63J. doi:10.1007/s12600-010-0137-1. S2CID   26504187 . Retrieved 2021-08-18.
2. "New Delhi 110 012, India". Oriental Insects, 1988. Retrieved 2021-08-18.
3. "Myllocerus curvicornis (Fabricius, 1792)". www.gbif.org. Retrieved 2021-08-18.
4. "THE FAUNA OF BRITISH INDIA, INCLUDING CEYLON AND BURMA: COLEOPTERA. RHYNCHOPHORA :-CURCULIONIDaE" (PDF). faunaofindia. Retrieved 2021-08-15.
5. C, Kurian; V.a, Abraham; K.n, Ponnamma; K.m.a, Koya (1978). "Myllocerus curvicornis (F.), a new pest of coconut [India]". Journal of Plantation Crops. Retrieved 2021-08-18.
6. K.n, Ponnamma; V.a, Abraham; C, Kurian; M.v, George (1981). "Host preference of Myllocerus curvicornis (F) - a pest of coconut palm". Agricultural Research Journal of Kerala. Retrieved 2021-08-18.
7. "Efficacy of some conventional insecticides against Myllocerous curvicornis on shisham in nursery". www.cabdirect.org. Retrieved 2021-08-18.
8. Shanthichandra, W. K. N.; Gunasekera, S. A.; Price, T. V. (1990-01-01). "Diseases and pests of the winged bean (Psophocarpus tetragonolobus [L.] DC.) in Sri Lanka". Tropical Pest Management. 36 (4): 375–379. doi:10.1080/09670879009371515 . Retrieved 2021-08-18.
9. "Myllocerus curvicornis". www.cabi.org. Retrieved 2021-08-18.