Sesamia Inferens
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''Sesamia inferens'', the Asiatic pink stem borer, gramineous stem borer, pink borer, pink rice borer, pink rice stem borer, pink stem borer, purple borer, purple stem borer or purplish stem borer, is a
moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...
of the family
Noctuidae The Noctuidae, commonly known as owlet moths, cutworms or armyworms, are a family (biology), family of moths. Taxonomically, they are considered the most controversial family in the superfamily Noctuoidea because many of the clades are constantly ...
. The species was first described by Francis Walker in 1856. It is found from
Pakistan Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country# ...
,
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
,
Sri Lanka Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, ...
,
Myanmar Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has ...
to
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
and the
Solomon Islands Solomon Islands, also known simply as the Solomons,John Prados, ''Islands of Destiny'', Dutton Caliber, 2012, p,20 and passim is an island country consisting of six major islands and over 1000 smaller islands in Melanesia, part of Oceania, t ...
. A polyphagous species, it is a major pest in many crops worldwide.


Description

Its wingspan is about 28 mm. Hindwings with veins 3 and 4 from arise from the cell. Antennae of male ciliated and simple in female. Body ochreous. Forewings with a red-brown suffusion along median nervure and veins 2 to 5. A sub-marginal dark line present. Cilia paler. Hindwings are whitish. Larva smooth and shiny and lack obvious hairs or markings. Color variable but usually cream white with a distinctive pink suffusion. The head and prothoracic shield are brown. The dorsal part of the last abdominal segment bearing the anus is yellowish brown. Mature larvae are between 30–40 mm long, pink with buff and pink dorsal markings and a brown head. Pupae are up to about 18 mm long, brown to yellowish-brown with a wrinkled frontal region of the head and cremaster with four large and two small spines.


Ecology

The larvae mostly feed on
Gramineae Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivated i ...
species, including '' Coix'', ''
Echinochloa ''Echinochloa'' is a very widespread genus of plants in the grass family and tribe Paniceae. Some of the species are known by the common names barnyard grass or cockspur grass. Some of the species within this genus are millets that are grown ...
'', ''
Oryza ''Oryza'' is a genus of plants in the grass family. It includes the major food crop rice (species '' Oryza sativa'' and '' Oryza glaberrima''). Members of the genus grow as tall, wetland grasses, growing to tall; the genus includes both annua ...
'', ''
Panicum ''Panicum'' (panicgrass) is a large genus of about 250 species of Poaceae, grasses native throughout the tropical regions of the world, with a few species extending into the northern temperate zone. They are often large, Annual plant, annual or P ...
'', ''
Saccharum ''Saccharum'' is a genus of tall perennial plants of the broomsedge tribe within the grass family. The genus is widespread across tropical, subtropical, and warm temperate regions in Africa, Eurasia, Australia, the Americas, and assorted ocean ...
'', ''
Setaria ''Setaria'' is a widespread genus of plants in the grass family. The name is derived from the Latin word ''seta'', meaning "bristle" or "hair", which refers to the bristly spikelets. The genus includes over 100 species distributed in many t ...
'', ''
Triticum Wheat is a group of wild and domesticated grasses of the genus ''Triticum'' (). They are cultivated for their cereal grains, which are staple foods around the world. Well-known wheat species and hybrids include the most widely grown comm ...
'', '' Zea'' and ''
Zizania Wild rice, also called manoomin, mnomen, psíŋ, Canada rice, Indian rice, or water oats, is any of four species of Poaceae, grasses that form the genus ''Zizania'', and the grain that can be harvested from them. The grain was historically an ...
''. Many of the food plants are of economic importance.


Symptoms

The caterpillars mainly bore into rice stems or the base of the panicle. After infection, the stem becomes wilted causing deadheart. Panicle attack leads to panicle to be cut leading to state called whitehead. Symptoms are mostly similar to other stem borers and hence closer look required to control the attack.


Control

Mechanical controlling using hand picking and
pheromone trap A pheromone trap is a type of insect trap that uses pheromones to lure insects. Sex pheromones and aggregating pheromones are the most common types used. A pheromone-impregnated lure is encased in a conventional trap such as a bottle trap, delta ...
s are used. Cultural practices like crop rotation mechanisms, reducing water levels are also used in controlling. Natural enemies such as parasitoides are very effective and nature loving controlling measures. The tachinid fly ''
Sturmiopsis inferens ''Sturmiopsis inferens'' is a species of fly in the family Tachinidae. It is native to Asia and is a parasitoid of various moth species whose larvae feed inside the stems of sugarcane, rice and other large grasses, including the Gurdaspur borer ...
'' was also once used, but is now not effective due to their low abundance. In chemical control, BHC,
DDT Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and almost odorless crystalline chemical compound, an organochloride. Originally developed as an insecticide, it became infamous for its environmental impacts. ...
,
fenthion Fenthion is an organothiophosphate insecticide, avicide, and acaricide. Like most other organophosphates, its mode of action is via cholinesterase inhibition. Due to its relatively low toxicity towards humans and mammals, fenthion is listed as mo ...
,
fenitrothion Fenitrothion (IUPAC name: ''O'',''O''-dimethyl ''O''-(3-methyl-4-nitrophenyl) phosphorothioate) is a phosphorothioate (organophosphate) insecticide that is inexpensive and widely used worldwide. Trade names include ''Sumithion'', a 94.2% solutio ...
, quinalphos, phosphamidon sprays and granules of
lindane Lindane, also known as ''gamma''-hexachlorocyclohexane (γ-HCH), gammaxene, Gammallin and benzene hexachloride (BHC), is an organochlorine chemical and an isomer of hexachlorocyclohexane that has been used both as an agricultural insecticide an ...
are used. Eggs can be eliminated by introducing '' Trichogramma minutum'' and '' Telenomeus'' species. ''
Apanteles flavipes ''Apanteles'' is a very large genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classificatio ...
'', '' Bracon chinensis'' and ''
Sturmiopsis inferens ''Sturmiopsis inferens'' is a species of fly in the family Tachinidae. It is native to Asia and is a parasitoid of various moth species whose larvae feed inside the stems of sugarcane, rice and other large grasses, including the Gurdaspur borer ...
'' are effective against caterpillars, whereas '' Xanthopinpla'' species and '' Tetrastichus aygari'' are used in pupal stages.


See also

*''
Sesamia calamistis ''Sesamia calamistis'', the African pink stem borer, is a moth of the family Noctuidae.Tams, W.H.T. & J. Bowden, 1953: A Revision of the African Species of ''Sesamia'' Guenée and related Genera (Agrotidae-Lepidoptera). ''Bulletin of Entomologica ...
'', the African pink stem borer


References


External links


Distribution and Insecticide Resistance of ''Sesamia inferens''
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Semiochemicals of ''Sesamia inferens''
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Differential preference of maize genotypes to ''Sesamia inferens''The Complete Mitochondrial Genome of the Pink Stem Borer, ''Sesamia inferens'', in Comparison with Four Other Noctuid Moths
*
Growth Stage Preference of Pink Stem Borer ''Sesamia inferens''Study the egg laying pattern of ''Sesamia inferens''
* {{Taxonbar , from=Q7456016 Hadeninae Moths of Japan Insect pests of millets Moths described in 1856 Insect pests of rice