Gadong Taohy

ELASMOPALPUS LIGNOSELLUS PDF

Elasmopalpus lignosellus (Zeller). Common Names. lesser cornstalk borer. Author: Dr. Steve L. Brown, Dr. Will Hudson, University of Georgia. J Econ Entomol. Apr;(2) Effects of Elasmopalpus lignosellus ( Lepidoptera: Pyralidae) damage on sugarcane yield. Sandhu HS(1), Nuessly GS, . Environ Entomol. Jun;39(3) doi: /EN Temperature- dependent development of Elasmopalpus lignosellus (Lepidoptera: Pyralidae).

Author: Mikarn Nikomuro
Country: Morocco
Language: English (Spanish)
Genre: Photos
Published (Last): 11 May 2006
Pages: 490
PDF File Size: 14.86 Mb
ePub File Size: 11.82 Mb
ISBN: 170-5-28913-194-1
Downloads: 49780
Price: Free* [*Free Regsitration Required]
Uploader: Mikalkis

The hind wings of both sexes are transparent with a silvery tint. The larvae bore into the stalk base near the soil surface causing lignsoellus to vascular tissues that result in these “dead hearts” symptoms and also allow pathogens to enter into the plant Smith and Ota Plants growing from single-eye setts of three varieties were exposed to a single generation of E.

Mature larva of the lesser cornstalk borer, Elasmopalpus lignosellus Zeller. Lepidoptera and Some Other Life Forms. Despite its wide distribution, damage is limited principally to crops in sandy soil Metcalf et al.

Only one larva is found in a silken tube. Other parasitoids sometimes present include Bracon gelechiae Ashmead Hymenoptera: The eggs are oval, measuring about 0. Elaamopalpus cornstalk borer has a number of weed hosts, such as: Feeding by larvae on woody tree seedlings is characterized by surface or subcortical burrowing and girdling and often results in gall-like swellings and lignowellus tissue around the feeding site Snyder Among the predators thought to be important mortality factors are a ground beetle, Plilophuga viridicolis LeConte Coleoptera: This will enable us to choose the best time to control this pest with greater precision.

You can help Wikipedia by expanding it. Brownish moth with wingspan of 17 to 25 mm Luginbill and Elasmpalpus This page was last modified Sweet corn plants that do not die after the damage of lesser cornstalk borer produced several bushy and stunted suckers with no marketable ears Nuessly and Webb When such practices fail, granular insecticides can be incorporated in the soil before covercrops are sown.

  BOY PROOF CECIL CASTELLUCCI PDF

On peanuts, this species mostly occurs in noneconomic densities, but sporadic outbreaks are associated with hot and dry climatic conditions Smith and Barfield Price, University of Florida. Liquid insecticides directed at the base of host plants or granules applied to elasmopslpus soil can be effective but hot, dry conditions often reduce the longevity of registered insecticides.

The hindwings are whitish with gray to brown anterior and distal margins.

In Georgia, Leuck reported that due to the semi-subterranean nature of lesser cornstalk borer, it fed on and damaged seedlings and mature soybean plants above and below the soil surface. One linear and six nonlinear models used to model insect development Briere-1, Briere-2, Logan-6, Lactin, Taylor, and polynomial models were tested to describe the relationship between temperature and developmental rate d It is a pest of several economically important crops.

The optimal temperature estimated for the total development was The relationship between borer-days and larval abundance is nonlinear, and small increases in borer-days beyond 10 results in large increases in larval abundance.

Effects of Elasmopalpus lignosellus (Lepidoptera: Pyralidae) damage on sugarcane yield.

Biomass was reduced in CP when plants were infested at any of the leaf stages, but sugar yield was reduced only when infested at the seven-leaf stage. Tillage and destruction of weeds ligjosellus recommended prior to planting because this helps to destroy larvae that may be present in the soil and might damage seedlings, the stage most susceptible to destruction.

Tachinidae through most of the range of lesser cornstalk ilgnosellus Funderburk et al. Head brown to black.

Elasmopalpus lignosellus

Discussion View source History. The species overwinters as a larva or pupa in the soil. In serious borer infestations, insecticides can be applied to nursery beds as soil drenches; this may have to be repeated lignozellus times because adequate exposure of larvae to the chemical is difficult, as they retreat into their silklined shelters when disturbed Dixon b.

  BMM 3109 PDF

Adult female lesser cornstalk borer, Elasmopalpus lignosellus Zeller.

lesser cornstalk borer – Elasmopalpus lignosellus (Zeller)

lignosellua Larval lengths are about 1. Feeding by lesser cornstalk borer, Elasmopalpus lignosellus Zeller Lepidoptera: Larvae are strong and active when disturbed and wiggle violently so that in some countries it is called the jumping borer Schaaf Duration of the egg stage is two to three days.

BraconidaePristomerus spinator Fabricius Hymenoptera: The first sign of infestation in forest tree nurseries is wilting foliage. LCBs overwinter as larvae or pupae lognosellus the soil. Adults are generally brownish with narrow and elongate forewings with oblique distal margins.

The lesser cornstalk borer, Elasmopalpus lignosellus Zellerwas described by Zeller inbut it was not considered of economic importance until Riley Lesser cornstalk borers seem to be adapted for hot, xeric conditions, and therefore tend to be more abundant and damaging following unusually warm, dry weather.

Smith and Johnson constructed life tables for populations in Texas, and identified survival of large lesser cornstalk borer larvae as the key element in generation survival, but the causative factor remains unidentified. Criteria used to select the best model were the greatest r 2lowest residual sum of squares RSSand Akaike information criterion values.