Dysdercus koenigii
From Wikipedia, the free encyclopedia
| Dysdercus koenigii | |
|---|---|
| Nymph on Hibiscus lobatus | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hemiptera |
| Suborder: | Heteroptera |
| Superfamily: | Pyrrhocoroidea |
| Family: | Pyrrhocoridae |
| Genus: | Dysdercus |
| Species: | D. koenigii |
| Binomial name | |
| Dysdercus koenigii (Fabricius, 1775) | |
Dysdercus koenigii is a species of true bug in the family Pyrrhocoridae, commonly known as the red cotton stainer. It is a serious pest of cotton crops, the adults and older nymphs feeding on the emerging bolls and the cotton seeds as they mature, transmitting cotton staining fungi as they do so.[1]
The nymphs moult five times as they grow. The first and second instar nymphs are orange/red, and the third instar has emerging wingpads and is orange at first, deepening in colour by the second day. The fourth instar is crimson and cylindrical with larger, darker wingpads and the fifth instar is similar, with prominent dark wingpads, black antennae and legs. The adult insect is also crimson, with a pair of black spots on the forewings. The membranous hind wings are concealed under the forewings when the insect is at rest. Males are about 14 mm (0.6 in) in length and females are a little larger.[1]