Water Measurer vs Sugarcane Woolly Aphid
Side-by-side species comparison
| Attribute | Water Measurer | Sugarcane Woolly Aphid |
|---|---|---|
| Scientific Name | Hydrometra australis | Ceratovacuna lanigera |
| Order | Hemiptera | Hemiptera |
| Family | Hydrometridae | Aphididae |
| Size | 8-11 mm | 1.5-2.5 mm |
| Habitat | Ponds & Lakes | Farmland |
| Diet | Omnivores | Herbivores |
| Regions | Americas, from southern United States to South America | South Asia (India, particularly Maharashtra and Karnataka; also Sri Lanka, Bangladesh) |
| Conservation | Least Concern | Least Concern |
Water Measurer
A very slender, elongate semi-aquatic bug that walks slowly on water surfaces in the Americas. Its head is exceptionally long and narrow with a small rostrum at the tip. It moves with slow, deliberate steps along pond margins.
Did You Know?
It is so lightweight that it can walk on the water surface without breaking the surface tension, leaving no visible dimples where its feet contact the water.
Sugarcane Woolly Aphid
A small aphid covered in white woolly wax secretions that forms dense colonies on the undersides of sugarcane leaves. Heavy infestations reduce cane juice quality and sugar recovery in mills.
Did You Know?
A major outbreak of this pest devastated the Indian sugarcane crop in 2002-2004 before biological control with parasitoid wasps brought it under control.