Nematus ribesii is a species of sawfly in the family Tenthredinidae. English names include common gooseberry sawfly[1] and imported currantworm.[2] This insect is best known as a pest of gooseberries. The larvae feed on the foliage of the plant, often defoliating it completely.[1]
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.[1]
^ abcGooseberry Sawfly. Royal Horticultural Society.
^Nematus ribesii. Integrated Taxonomic Information System (ITIS).
Nematusribesii is a species of sawfly in the family Tenthredinidae. English names include common gooseberry sawfly and imported currantworm. This insect...
Nematus is a genus of sawfly in the family Tenthredinidae. Some of its species, including Nematus leucotrochus, Nematus olfaciens and Nematusribesii...
development stage, v-moth (Macaria wauaria), and gooseberry sawfly (Nematusribesii). Nematusribesii grubs will bury themselves in the ground to pupate; on hatching...
The larvae feed on the foliage of the plant, defoliating it. Unlike Nematusribesii, the common gooseberry sawfly, the species has a single brood. Adults...
shoots but it is seldom a serious problem. The blackcurrant sawfly (Nematusribesii) lays its eggs on the underside of the leaves and the voracious larvae...
to at least three species of sawfly: Nematusribesii, the common gooseberry sawfly or imported currentworm Nematus leucotrochus, the pale-spotted gooseberry...
Dominion Experimental Farms, for controlling the invasive currantworm Nematusribesii. Between 1884 and 1908, the first Dominion Entomologist, James Fletcher...
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