Hellula undalis (cabbage webworm)
Identity
- Preferred Scientific Name
- Hellula undalis (Fabricius)
- Preferred Common Name
- cabbage webworm
- Other Scientific Names
- Evergestis occidentalis de Joannis
- Oebia undalis (Fabricius)
- International Common Names
- Englishcabbage borercabbage centre grubcabbage, webwormcabbage, webworm, importedcauliflower head borerold world webwormoriental cabbage webwormstriped cabbage heart caterpillar
- Frenchpyrale des cruciferespyrale du chou
- Local Common Names
- GermanyZuensler, Suedeuropaeischer Kruziferen-
- JapanDaikon-sinkuimusi
- NetherlandsKoolhartrups, gestreepte
- EPPO code
- HLULUN (Hellula undalis)
Pictures
Distribution
Host Plants and Other Plants Affected
Symptoms
The young larvae mine leaves, bore stems and feed externally on the leaves; they then often penetrate the heart of the plant destroying the terminal bud, and prevent heading. While feeding they spin a silken tube. Plants wilt, and frass is exuded from the affected plant parts.
List of Symptoms/Signs
Symptom or sign | Life stages | Sign or diagnosis |
---|---|---|
Plants/Growing point/external feeding | ||
Plants/Inflorescence/wilt | ||
Plants/Leaves/external feeding | ||
Plants/Leaves/internal feeding | ||
Plants/Leaves/webbing | ||
Plants/Stems/internal feeding | ||
Plants/Stems/internal feeding | ||
Plants/Whole plant/dead heart | ||
Plants/Whole plant/wilt |
Prevention and Control
Introduction
H. undalis frequently occurs in the same areas where the diamond back moth [Plutella xyolestella] is regarded as a major pest of Cruciferae. This complicates the control measures applied to H. undalis, since measures used to control P. xylostella may adversely affect measures used to control H. undalis (including H. undalis' natural enemies).
Biological Control
Dreyer (1987) found that weekly applications of simple neem products afforded good control in Togo.
Host-Plant Resistance
Srihari and Satyanarayana (1992) tested eight hybrids for resistance and found that TKCBN25 sustained the lowest H. undalis damage.
Lal et al. (1991) tested 64 cultivars of cauliflower in India. None was highly resistant, but the least infested variety was ES-9.
In Taiwan, it was found that variety B197 of Chinese cabbage was the least damaged by H. undalis (AVRDC, 1987). In 1979, research at the same centre found B159, B186, B488 and B501 to be the least affected by H. undalis.
H. undalis frequently occurs in the same areas where the diamond back moth [Plutella xyolestella] is regarded as a major pest of Cruciferae. This complicates the control measures applied to H. undalis, since measures used to control P. xylostella may adversely affect measures used to control H. undalis (including H. undalis' natural enemies).
Biological Control
Dreyer (1987) found that weekly applications of simple neem products afforded good control in Togo.
Host-Plant Resistance
Srihari and Satyanarayana (1992) tested eight hybrids for resistance and found that TKCBN25 sustained the lowest H. undalis damage.
Lal et al. (1991) tested 64 cultivars of cauliflower in India. None was highly resistant, but the least infested variety was ES-9.
In Taiwan, it was found that variety B197 of Chinese cabbage was the least damaged by H. undalis (AVRDC, 1987). In 1979, research at the same centre found B159, B186, B488 and B501 to be the least affected by H. undalis.
Chemical Control
Due to the variable regulations around (de-)registration of pesticides, we are for the moment not including any specific chemical control recommendations. For further information, we recommend you visit the following resources:
•
EU pesticides database (http://ec.europa.eu/food/plant/pesticides/eu-pesticides-database/)
•
PAN pesticide database (www.pesticideinfo.org)
•
Your national pesticide guide
Impact
H. undalis is a serious pest of Brassicae and other crucifers in warm regions where it occurs. Without any control the yield loss in India amounts to 30% (Srihari and Satyanarayana, 1992).
Information & Authors
Information
Published In
Copyright
Copyright © CABI. CABI is a registered EU trademark. This article is published under a Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
History
Published online: 16 November 2021
Language
English
Authors
Metrics & Citations
Metrics
SCITE_
Citations
Export citation
Select the format you want to export the citations of this publication.
EXPORT CITATIONSExport Citation
View Options
View options
Get Access
Login Options
Check if you access through your login credentials or your institution to get full access on this article.