Definition of tortrix in US English:


(also tortrix moth)


  • A small moth with typically green caterpillars that live inside rolled leaves and can be a serious pest of fruit and other trees.

    Family Tortricidae: many species

    • ‘Orange tortrix moths are generally found in California, Oregon, and Washington.’
    • ‘As the leaves expand, the tortrix feeds on the leaves, rolling, folding and tying them together for shelter.’
    • ‘The carnation tortrix moth is a butterfly of the tortrix moths family (Tortricidae).’
    • ‘The defoliation caused by the large aspen tortrix does not affect tree survival since it occurs early enough in the summer season to allow the trees to produce new foliage.’
    • ‘Each pheromone trap is specific to the appropriate species of tortrix moth.’
    • ‘Sugar pine tortrix larva with ivory colored spots, easily confused with western spruce budworm.’
    • ‘Outbreaks of the large aspen tortrix tend to precede those of the forest tent caterpillar.’
    • ‘MLEs were detected in the summer fruit tortrix Adoxophyes orana fasciata and the tea tortrix Homona magnanima, but no MLEs were detected in the parasitoid wasp Ascogaster quadridentata.’
    • ‘The summer fruit tortrix moth and is one of the most devastating pests in pome fruits and stone fruits; apples and pears.’
    • ‘The life of the green oak tortrix caterpillar is one that is ruled by split second timing.’
    • ‘Apples are the most susceptible crop as they can be attacked by caterpillars of the fruit tree tortrix moth.’
    • ‘The natural enemies can play an essential role in the regulation of the tortrix moths population dynamics.’
    • ‘Consequently, the ability of parasites and predators of the orange tortrix to substantially suppress pest populations is greatly diminished by the use of insecticides.’
    • ‘The sex-pheromone activity of a mixture of cis - 9-tetradecenyl acetate and cis - 11-tetradecenyl acetate towards male summer fruit tortrix moths was determined in laboratory tests.’
    • ‘This is a fantastic site, really helpful for micro moths, especially tortrix moths!’
    • ‘Environmental monitoring of Archips podana (fruit tree tortrix moth) in Bramley apple orchards in Northern Ireland’
    • ‘A third spray may be needed in late July or early August if tortrix moths are a problem.’
    • ‘A simpler system can now be proposed in the light of wind-tunnel experiments on male summer fruit tortrix moths entering homogeneous pheromone clouds.’
    • ‘Orange tortrix moths are fawn or gray and the chevron pattern has less contrast than that of the garden tortrix.’
    • ‘The summer fruit tortrix moth is not known to occur in North America but is a major pest of fruit crops, especially apple and pear, in countries where it occurs.’


Late 18th century: modern Latin, feminine of Latin tortor ‘twister’, from torquere ‘to twist’.