''Nematus ribesii'' is a species of

sawfly Sawflies are the insects of the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay ...

in the family

Tenthredinidae Tenthredinidae is the largest family of sawflies, with well over 7,500 species worldwide, divided into 430 genera. Larvae are herbivores and typically feed on the foliage of trees and shrubs, with occasional exceptions that are leaf miners, stem ...

. English names include common gooseberry sawflyGooseberry Sawfly.
Royal Horticultural Society. and imported currantworm.''Nematus ribesii''.
Integrated Taxonomic Information System (ITIS). This insect is best known as a pest of gooseberries. The larvae feed on the foliage of the plant, often defoliating it completely. Like all sawflies, this species is a hymenopteran, not a true fly. This insect can produce three generations per year, with larvae emerging between April and September. It differs in this respect from '' Nematus leucotrochus'', the pale-spotted gooseberry sawfly, which has a single generation. The female sawfly lays eggs on the undersides of the leaves and the larvae work their way upwards, stripping the plant of foliage. The larva of this species of sawfly is up to 2 centimeters long and green in color with a black head and black spots along the body. The adult is yellowish with black markings, the females slightly larger than the males.

References

External links

Bugguide.net. ''Nematus ribesii''
Tenthredinidae Insects described in 1763 Agricultural pest insects Taxa named by Giovanni Antonio Scopoli {{sawfly-stub