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).
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The lesser cornstalk borer, Elasmopalpus lignosellus Zellerwas described by Zeller inlignsoellus it was not considered of economic importance until Riley Discussion View source History. Frequent irrigation is also an important agronomic practice for the management of lesser cornstalk borer because moist soils discourage female moths from laying eggs and also suppress larval populations in the soil.
Normally there are six instars, but the number of instars can range from five to lignoosellus depending on environmental conditions Biddle et al.
Liquid insecticides directed at the base of host plants or granules applied to the soil can be effective but hot, dry conditions often reduce the longevity of registered insecticides. While several natural enemies of lesser cornstalk borer are known, they are not thought to be major determinants of population trends.
Hindwings whitish with gray to brown anterior and distal margins. The eggs are oval, measuring about 0.
Ichneumonidaeand Stomatomyia floridensis Townsend Diptera: Host Plants Back to Top Lesser cornstalk borer is a polyphagous pest that often attacks several crops throughout the southeastern United States. 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 Parasites are abundant ArnaudKrombein and others LCBs overwinter as larvae or pupae in the soil.
As seedlings begin to die, they may remain upright or fall over. Larvae pass through six instars, and total larvae development elasmopalpuss 13 to 24 days DupreeLeuck Duration of the egg stage lignoseklus two to three days.
Head brown to black. Culturally, selected covercrop rotation, late-fall clear-fallowing, proper soil fertilization, and irrigation will help to ameliorate the factors conductive to infestation. On peanuts, LCBs will feed on any portion lkgnosellus the plant that contacts the soil including limbs, pegs and pods. First instar elasmopalpuss of the lesser cornstalk borer, Elasmopalpus lignosellus Zeller.
Pyralidaelarvae on sugarcane a complex hybrid of Saccharum spp. Total larval development time varies widely, but normally averages about 20 days. Elasmopalpus lignosellus Zeller Insecta: The female deposits nearly all her eggs below the soil surface adjacent to plants. Retrieved from ” http: Biomass was reduced in CP when plants were infested at any of the leaf stages, but lignisellus yield was reduced only when infested at the seven-leaf stage.
Adult moths emerge in the spring and lay eggs on the host plants. Note wilting due to stalk feeding by larvae. Plants growing from single-eye setts of three varieties were exposed to a single generation of E.
Such conditions are optimal for mating and oviposition.
Tiller production increased in CP and CP when infested at the three-leaf stage, whereas tiller production, biomass and sugar yield decreased in CP when infested at all leaf stages, compared with the untreated control. Description and Life Cycle Back to Top There are three to four generations annually in the southeast, but in the southwest there are only three generations annually.
Photograph by University of Florida.
Elasmopalpus – Wikipedia
Greenish brown and about 16 mm long when mature. The optimal temperature estimated for the total development was Insecticides applied for suppression of lesser cornstalk borer are usually applied in a granular formulation in the seed furrow or in a band over the seed bed, using restricted pesticides according to label recommendations.
Guide to insect borers of North American broadleaf trees and shrubs. The species overwinters elasmopalpsu a larva or pupa in the soil. Removing soil from around the base of the seedlings reveals larval burrows girdling the stem and gall-like swelling and callus tissue at wound sites.
The hind wings of both sexes are transparent with a silvery tint. Retrieved August 28, Adult pheromone trap catches and flush counts are correlated Funderburk et al.
Recorded host plants include a number of economically important plants such as Phaseolus vulgarisBeta vulgarisBrassica oleracea var. When disturbed they flip about very rapidly. Entrance to the gallery of a lesser corn stalk borer, Elasmopalpus lignosellus Zeller. The larvae bore elasmopalpjs the stalk base near the soil surface causing damage to vascular tissues that result in these “dead hearts” symptoms and also allow pathogens to enter into the plant Smith and Ota Among the predators thought to be important mortality factors are a ground beetle, Plilophuga viridicolis LeConte Coleoptera: Weather Back to Top Lignoselkus cornstalk borers seem to be adapted for hot, xeric conditions, and therefore tend to be more abundant and damaging following unusually warm, dry weather.
When first deposited, they are greenish, soon turning pinkish, and eventually reddish. The most important pathogen appears to be a granulosis virus, but a Elas,opalpus sp. Photograph by James F. Variability libnosellus color of wings and wing patterns were reported both in male and female moths, depending on climatic and regional conditions Biddle et al. Larval lengths are about 1. Lygaeidae ; and larval stiletto flies Diptera: