Red clover casebearer moth (Coleophora deauratella) is widespread throughout New Zealand
Keywords:insecticide control, pheromone trap, red clover, seed production
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=12oC). 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.
Evenden ML, Mori BA, Gries R, Otani J 2010. Sex pheromone of the red clover casebearer moth, <em>Coleophora deauratella</em>, an invasive pest of clover in Canada. Entomologia Experimentalis et Applicata 137(3): 255-261. <a href="https://doi.org/10.1111/j.1570-7458.2010.01062.x">https://doi.org/10.1111/j.1570-7458.2010.01062.x</a>
Jones CA, Kiniry JR 1986. CERES-Maize: A simulation model of maize growth and development. Texas A&M University Press, College Station, TX, USA.
Landry J-F 1991. <em>Coleophora deauratella</em> Lienig and Zeller (<em>Lepidoptera</em>: <em>Coleophoridae</em>) in North America: an introduced, newly detected European moth injurious to red clover seeds. The Canadian Entomologist 123(5): 1125-1133. <a href="https://doi.org/10.4039/Ent1231125-5">https://doi.org/10.4039/Ent1231125-5</a>
Mansfield S, Dillon ML, Whitehouse MEA 2006. Are arthropod communities in cotton really disrupted? An assessment of insecticide regimes and evaluation of the beneficial disruption index. Agriculture, Ecosystems and Environment 113: 326-335. <a href="https://doi.org/10.1016/j.agee.2005.10.012">https://doi.org/10.1016/j.agee.2005.10.012</a>
Mori BA, Yoder C, Otani J, Evenden ML 2014. Relationships among male <em>Coleophora deauratella</em> (<em>Lepidoptera</em>: <em>Coleophoridae</em>) pheromoneâ€baited trap capture, larval abundance, damage and flight phenology. Agricultural and Forest Entomology 16(2): 207-215. <a href="https://doi.org/10.1111/afe.12050">https://doi.org/10.1111/afe.12050</a>
Pearson WD 1980. Management practices reduce casebearer (<em>Lepidoptera</em>: <em>Coleophoridae</em>) damage to white clover seed crops. New Zealand Journal of Experimental Agriculture 8(1): 71-74. <a href="https://doi.org/10.1080/03015521.1980.10426236">https://doi.org/10.1080/03015521.1980.10426236</a>
Pearson WD 1989. <em>Coleophora frischella</em> L., whitetipped clover casebearer, <em>C. spissicornis</em> Haworth, banded clover casebearer (<em>Lepidoptera</em>: <em>Coleophoridae</em>). In: Cameron, PJ, Hill RL, Bain J, Thomas WP eds. A review of biological control of invertebrate pests and weeds in New Zealand 1874-1987, DSIR Entomology Division. CAB International Institute of Biological Control, Wallingford, UK. Pp. 73-85.
Schroeder N, Clifford PPT 1996. The incidence of insect pests and their Arthropod predators in 24 Canterbury white clover seed crops. Agronomy Society of New Zealand Special Publication No. 11 / Grassland Research and Practice Series No. 6: 29-33.
Stuart AM 1958. A review of work in New Zealand on the clover case-bearers <em>Coleophora spissicornis</em> Haw. and <em>C. alcyonipennella</em> Kollar (<em>Coleophoridae</em>, <em>Lep</em>.). New Zealand Journal of Agricultural Research 1(2): 239-248. <a href="https://doi.org/10.1080/00288233.1958.10431076">https://doi.org/10.1080/00288233.1958.10431076</a>
Trought TET 1979. Pests in herbage seed production. In: Lancashire JA ed. Herbage Seed Production, Grassland Research and Practice Series No.1. New Zealand Grassland Association. Pp. 41-45.