The potential global distribution of Chilo partellus.

Top of page Chilo partellus was first described by Swinhoe in 1885 and is one of many species of Chilo that develop on cereal crops and wild grasses, mostly in the tropics. Bleszynski (1970) published a thorough revision of all known species of Chilo on a world basis and clarified many taxonomic confusions. Before then, the scientific literature often referred to this species as Chilo zonellus.

Spotted stemborer, Chilo partellus, developmental stages: (A) egg, (B) larva, (C) pupa, (D) adult female, and (E) adult male. Photos: Courtesy of icipe. Biology. C. partellus completes 1, 2, or more generations per year, depending on the location and the number of maize-cropping seasons or other hosts available throughout the year. One.

Resistance in maize to Chilo partellus swinhoe.

Chilo spp. and Maliarpha spp. do not cover the egg with a tuft of hairs. Chilo partellus lays eggs in a herringbone pattern usually on the upper surface of the leaf along the midrib (Fig. 3.6).Eggs of Maliarpha separatella are usually protected in leaf folds around each egg mass.Busseola fusca lays eggs in a mass, not covered with a tuft of hairs, and individual eggs are hemispherical with.ABSTRACT: Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) are major insect pests of Sorghum bicolor (L) Moench, the main staple food crop in India. Life cycle of C. partellus (Swinhoe) (Lepidoptera: Pyralidae) was studied under laboratory conditions by using artificial diet. The research revealed that the C. partellus (Swinhoe) (Lepidoptera: Pyralidae) was completed its life cycle in 30-40.General information about Chilo partellus (CHILZO) Name Language; durra stem borer: English: pink borer: English: sorghum stem borer: English.


World distribution of Chilo partellus (CHILZO) EPPO Global Database. Go! advanced search. Login. Register. Toggle navigation. Home; Standards. PP1 - Efficacy Evaluation of Plant Protection Products.Abstract Chilo partellus is a major crop pest in Asia and Africa, and has recently spread to the Mediterranean region. Knowledge of its potential distribution can inform biosecurity policies aimed at limiting its further spread and efforts to reduce its impact in areas that are already inva-ded. Three models of the potential distribution of this insect have been published, each with.

Caterpillar of Chilo partellus. Pupa: Pupation takes place in a small chamber in the stem. The pupal period takes 7 10 days. Adult: Adult moths have a wingspan of 20-30 mm. Males are smaller and darker than females. The forewings of males are pale brown. The forewings of the females are much paler and the hind wings are almost white. CONTROL METHODS: Cultural control: Stems and damaged cobs.

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Testing maize cultivars for resistance to C. partellus could be better done by infesting them at 2.5 wk after germination as different components of resistance were expressed at this stage. The infestation with neonate larvae resulted in higher foliage damage and greater dead hearts than with egg masses. The regression estimate of all the cultivars for functional plant loss index on larval dry.

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Chilo partellus, the spotted stem borer (SSB), is reported for the first time from the fields of sorghum and corn in Israel. Spotted stem borer larvae were first discovered in July 2010 on sorghum and corn plants in the Western Galilee. The new pest had spread all over northern Israel by the end of 2011. The identity of the new pest was confirmed using the morphology of the dissected male.

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Like most other insects, Chilo partellus requires sterols such as cholesterol in the diet. Freshly hatched larvae grown on a chemically defined diet take about 27 days to become adults. However, when an azasteroid, 25-azacholesterol is added to the diet in concentrations' ranging from 0.5 ppm to 25 ppm, the time taken to become adults became 41 days at 5 ppm azasteroid. The maximum larval.

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Flight-activity pattern of Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) in the Western-Transvaal.

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Chilo partellus is now considered to be one of the most important pests of maize and other cereal crops in eastern and southern Africa. Most cereal stem borers, including C. partellus, are polyphagous and have several gramineous and other non-cultivated wild host plants (Ingram, 1958; Seshu Reddy, 1983; Harris, 1990; Khan et al., 1991). In Africa, the bulk of cereal crops are grown on small.

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Abstract. Phagostimulatory responses of third-instar larvae ofChilo Partellus to phenolic components identified in an ethyl acetate extract of the leaf whorls of 3-week-old plants ofSorghum bicolor cultivar IS 18363 were studied in no-choice bioassays. The major components in the extract were identified as 4-hydroxybenzaldehyde and 4-hydroxybenzoic acid, with 4-hydroxy-3-methoxycinnamic acid.

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Keywords: Cotesia Xavipes; Chilo partellus; Parasitism; Temperature; Host stage; Growth patterns 1. Introduction The crambid Chilo partellus is an exotic stemborer species accidentally introduced in East Africa sometime before the 1930s (Harris, 1990). Ch. partellus has colo-nized new areas and its pest status is gradually increas- ing in Africa. Cereal crops are infested from early whorl.

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Chilo partellus (Spotted stemborer) Life Cycle. Eggs are laid in batches on leaf surfaces, usually close to the midrib. They hatch after 4-10 days. Young caterpillars initially feed in the leaf whorl. Older caterpillars tunnel into stems, eating out extensive galleries, within which they feed and grow for 2-3 weeks. When larvae are fully grown, they pupate and remain inside the maize stem.

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C. partellus has a forward projecting frons but lacks the sharp point and ventral ridge. C. partellus closely resembles many other Chilo species and genitalia should be examined to confirm identity. Female genitalia of C. partellus is with a lamellate signum with a median ridge; C. suppresalis signum is narrow and slit-like with a median ridge (2). C. plegadellus with a prominent “narrow.

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