The scientific names for the okra fruit borer, which is also a significant shoot borer, are Earias vitella and Earias insulana.
These two species are recognized as major pests of okra (Abelmoschus esculentus), causing considerable damage to both the tender shoots and the developing fruit. As larvae, these moths bore into the plant parts, leading to stunted growth, wilting, and reduced marketable yield of the okra fruit.
Distinct Characteristics of Okra Shoot and Fruit Borers
While both Earias vitella and Earias insulana pose significant threats to okra crops, their adult forms can be differentiated by specific morphological features, as outlined below:
| Feature | Earias vitella (Spotted Bollworm) | Earias insulana (Egyptian Bollworm) |
|---|---|---|
| Adult Size | Medium-sized | Smaller than E. vitella |
| Head & Thorax | Ochreous white | Pea green in colour |
| Forewings | Pale white with a broad, wedge-shaped horizontal green patch in the middle | Uniformly pale yellowish green |
Earias vitella is commonly known as the spotted bollworm, while Earias insulana is often referred to as the Egyptian bollworm. Their larval stages are particularly destructive, as they burrow into the fruit, making it unfit for consumption and causing significant economic losses for farmers. Effective management strategies are crucial to mitigate their impact on okra production.
