Management practices reduce casebearer (Lepidoptera: Coleophoridae) damage to white clover seed crops

Pearson, W. D.

doi:10.1080/03015521.1980.10426236

Cited by 2 publications

(2 citation statements)

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“…Landry (1991) reported C. deauratella went undetected for almost 30 years in eastern Canada and the north-eastern United States, in part because it had been misidentified, meaning it was well established when discovered. Two species of recorded white-clover casebearer moth, C. spissicornis and C. frischella, have been recorded in New Zealand (Pearson 1980). Adults of these species are similar in appearance to, and difficult to distinguish from, C. deauratella which could lead to misidentification in New Zealand.…”

Section: Figurementioning

confidence: 99%

“…In New Zealand, clover casebearer moths (Coleophora spp.) were a significant problem in white clover (Trifolium repens L.) seed crops in the 1950s to 1970s causing seed losses up to 34% (Stuart 1958;Trought 1979;Pearson 1980), but the introduction of two biological control agents significantly reduced the negative effect of these white-clover pests (Pearson 1989). Until recently, red-clover seed crops remained largely unaffected by clover casebearer moths, with the most troubling insect pests being intermittent infestations of red clover thrips (Haplothrips niger (Osborn), various species of aphid and potato mirids (Calocoris norvegicus) (Gmelin).…”

Section: Introductionmentioning

confidence: 99%

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Red clover casebearer moth (Coleophora deauratella) is widespread throughout New Zealand

Chynoweth¹,

Rolston

McNeill

et al. 2018

NZPP

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Coleophora deauratella (red-clover casebearer moth, RCCB) was first confirmed as present in New Zealand during late 2016. It devastated red-clover seed crops throughout the mid-Canterbury region during the 2016/17 growing season but its distribution and control options were unknown. Therefore, traps containing a male pheromone specific to RCCB were located inside either red-clover seed crops or hay crops at 27 sites throughout the South Island and lower North Island during summer 2017/18. Moth numbers were monitored at 7-14 day intervals between November and February. RCCB was confirmed as present at all 27 sites (from Invercargill to Masterton). Peak flights occurred during December with mean moth catch well correlated in thermal time, with half of adult emergence occurring 285°C days from 1 July (baseline temperature=12°C). Laboratory-based trials were conducted against live moths to evaluate the effectiveness of various organophosphate and synthetic pyrethroid insecticides. Tau-fluvalinate, lambda cyhalothrin and chlorpyrifos each provided >90% control of moths so chemical control is possible, if required. However, an integrated pest-management control strategy needs to be tested and evaluated.

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Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%