| Myllocerus viridanus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Infraorder: | Cucujiformia |
| Family: | Curculionidae |
| Genus: | Myllocerus |
| Species: | M. viridanus |
| Binomial name | |
| Myllocerus viridanus Fabricius, 1775 | |
| Synonyms | |
| |
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]
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. [6]
Adult weevils have been observed in numerous plants as they are known to defoliate the tender leaves and shoots extensively. [7] Grubs feed on roots resulting in wilting of plants. Hence considered as serious polyphagous pest of economic importance. [8] [9]
Adults can be destroyed by using Beauveria bassiana , an entomopathogenic fungus. [10]
Beauveria bassiana is a fungus that grows naturally in soils throughout the world and acts as a parasite on various arthropod species, causing white muscardine disease; it thus belongs to the group of entomopathogenic fungi. It is used as a biological insecticide to control a number of pests, including termites, thrips, whiteflies, aphids and various beetles. Its use in the control of bedbugs and malaria-transmitting mosquitos is under investigation.
The palm weevil Rhynchophorus ferrugineus is one of two species of snout beetle known as the red palm weevil, Asian palm weevil or sago palm weevil. The adult beetles are relatively large, ranging between 2 and 4 centimetres long, and are usually a rusty red colour—but many colour variants exist and have often been classified as different species. Weevil larvae can excavate holes in the trunks of palm trees up to 1 metre (3.3 ft) long, thereby weakening and eventually killing the host plant. As a result, the weevil is considered a major pest in palm plantations, including the coconut palm, date palm and oil palm.
Curculio nucum, the nut weevil, is a medium-sized beetle, with an especially elongated snout, characteristic of the Curculionini tribe of the weevil family (Curculionidae). Its larvae develop in hazel nuts Corylus avellana, being a serious pest in hazelnut orchards. It occurs in most of Europe, from south Sweden, Finland and Great Britain to the Mediterranean.
Olene mendosa, the brown tussock moth or hairy tussock moth, is a moth of the family Erebidae. The species was first described by Jacob Hübner in 1823. It is found in India, Bangladesh, Sri Lanka, Indonesia, Taiwan, Thailand and Australia.
The Entiminae are a large subfamily in the weevil family Curculionidae, containing most of the short-nosed weevils, including such genera as Entimus, Otiorhynchus, Phyllobius, Sitona, and Pachyrrhynchus. In comparison with their stunning diversity, only a few of these weevils are notorious pests of major economic importance. Entimines are commonly encountered in the field, including urban environments, and abundant in entomological collections.
Curculio elephas is a species of beetle in the family Curculionidae, the true weevils. It is known commonly as the chestnut weevil. It is a serious pest of chestnut in Europe.
Trichobaris trinotata, commonly known as the "Potato stalk borer", is a species of weevil in the family Curculionidae. It is found in North America where it is a pest of potato plants, the larvae tunnelling inside their stems.
Euproctis fraterna is a moth of the family Erebidae first described by Frederic Moore in 1883. It is found in the Maldives, India, Sri Lanka and the Seychelles.
Hypera brunnipennis, the Egyptian alfalfa weevil, is a species of true weevil in the beetle family Curculionidae. The name is often misspelled as brunneipennis in the literature.
Holotrichia serrata, commonly known as the sugarcane white grub, or cockchafer grub, is a species of dung beetle found in India, Bangladesh, and Sri Lanka.
Myllocerus curvicornis, commonly known as coconut ash weevil, is a species of weevil found in India and Sri Lanka.
Odoiporus longicollis, commonly known as banana stem weevil or banana pseudostem borer, is a species of weevil found in South Asia and South East Asia.
Euwallacea piceus, is a species of weevil native to Oriental Asia but introduced to African and other Westerns Pacific parts of the world. It is a serious pest in tropical and subtropical parts of the Americas.
Myllocerus dentifer, is a species of weevil found in India, Pakistan and Sri Lanka.
Myllocerus subfasciatus, is a species of weevil found in India, and Sri Lanka. The Sri Lankan population was earlier identified as a separate species, Myllocerus spurcatus.
Myllocerus discolor, commonly known as mango ash weevil, is a species of weevil found in India, Sri Lanka and Myanmar. The Sri Lankan population is identified as the subspecies, Myllocerus discolor canescens.
Debus emarginatus, is a species of weevil widely distributed throughout the Old World tropics.
Xylosandrus discolor, is a species of weevil found in Australia, Micronesia, Myanmar, China, India, Sri Lanka, Indonesia, Malaysia, Taiwan and Thailand.
Euwallacea perbrevis, commonly known as tea shot-hole borer, is a species of weevil native to South and South-East Asia through to Australia, but introduced to Western countries.
Estigmena chinensis, commonly known as Green standing bamboo borer, is a species of leaf beetle found in India, Sri Lanka and Myanmar. It is a major pest of bamboo.
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