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).
Total development from egg deposition to adult emergence ranged from Populations tend to increase over the course of a season, so some damage can be avoided by early planting. Larvae pass through six instars, and total larvae development requires 13 to 24 days DupreeLeuck Guide to insect borers of North American broadleaf trees and shrubs. Hindwings whitish with gray to brown anterior and distal margins. It was first discovered outside the continental U. Distribution Back to Top The lesser cornstalk borer occurs widely in the western hemisphere and is known from much of the southern United States.
Moth Photographers Group – Elasmopalpus lignosellus –
Will Hudson, University of Georgia. The species overwinters as a larva or pupa in the soil. In Georgia, Leuck reported that due to the semi-subterranean nature lignosrllus lesser cornstalk borer, it fed on and damaged seedlings and mature soybean plants above and below the soil surface.
Developmental time decreased with increase in temperature from 13 to 33 degrees C and increased markedly at 36 degrees C in all immature stages.
Mature larva of the lesser cornstalk borer, Elasmopalpus lignosellus Zeller. Larvae construct radiating tubelike shelters of silk, soil, and excrement near the root collar just below the soil surface.
Pathogens are commonly present in lesser cornstalk borer populations. The eggs are oval, measuring about 0.
The estimated lower elasmppalpus upper developmental thresholds for total development were 9. 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.
It is a pest of several economically important crops. However, crop culture that uses conservation tillage i. It completes two to four generations per year Dixon b. First instar larva of the lesser cornstalk borer, Elasmopalpus lignosellus Zeller.
This page was last edited on 7 Julyat While several natural enemies of lesser cornstalk borer are known, they are not thought to be major determinants of population trends.
While more often observed in the southeastern United States, this pest species is sporadic in nature and distributed from Maine to southern California.
Female moths oviposit eggs in late summer and fall in Kentucky Bessinwhile in Florida, we observed heavy oviposition in spring and early summer. To scout for lesser cornstalk borer, uproot small plants in 10 locations in a field. Adult moths emerge in the spring and lay eggs on the host plants. The larva of the lesser cornstalk borer LCB is dark-colored with purple bands around its body. Smith and Ota observed that the lesser cornstalk borer damage on sugarcane in Hawaii can be avoided by following agronomic practices that enhance the plant vigor to tolerate damage caused by lesser cornstalk borer.
In females, however, the entire forewing is dark, sometimes almost black, but also bearing reddish or purplish scales.
Elasmopalpus – Wikipedia
Lesser cornstalk borer has a number of weed hosts, such as: Pale yellowish green initially, gradually becoming dark brown, with six hooked spines on abdomen tip, and about 8 mm long. In serious borer infestations, insecticides can be applied to nursery beds as soil drenches; this may have to be repeated several times because adequate exposure of larvae to the chemical is difficult, as they retreat into their silklined shelters when disturbed Dixon b.
Among the predators thought to be important mortality factors are a ground beetle, Plilophuga viridicolis LeConte Coleoptera: Adult pheromone trap catches and flush counts are correlated Funderburk et al.
Adult leasmopalpus under field conditions is estimated at about elasmooalpus days.
Feeding by larvae on woody tree seedlings is characterized by surface or subcortical burrowing and girdling and often results in gall-like swellings and callus tissue around the feeding site Snyder Brownish moth with wingspan of 17 to 25 mm Luginbill and Ainslee The hindwings are whitish with gray to brown anterior and distal margins.
Lesser cornstalk borer, Elasmopalpus lignosellus Zellerdamage. Plants growing from single-eye setts of three varieties were exposed to a single generation of E.
Greenish brown and about 16 mm long when mature. If borer days equals 5 to 9, then damage is possible and fields should be scouted.
Head and cervical shield shiny brownish black; body pale green with longitudinal, somewhat broken white and purple stripes. When such practices fail, granular insecticides can be incorporated in the soil before covercrops are sown.