Pacific Pests, Pathogens, Weeds & Pesticides - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Cotton stainers (555)


Click/tap on images to enlarge
Summary

  • Worldwide distribution. In Australia, many Pacific island countries. Cotton, okra and others, including weeds in the hibiscus family (plus unrelated grasses, cereals, citrus and forest trees).
  • Low economic importance on cotton. Controlled by broad-spectrum insecticides used for other pests. Impact on okra not reported.
  • Nymphs and adults suck seed before or after opening and stain lint, leading to boll shedding, or link failing to expand properly (tightlock).
  • Eggs in batches in soil or leaf litter. Adults, red and black head, red eyes, white collar between head and thorax (and stripes at sides), pink to orange body, small dot on each wing.
  • Spread: stronger flyer.
  • Biosecurity: American species considered a high risk in Australia. Note, ratoon cotton risks establishing exotic pests.
  • Biocontrol: fungi and predators (assassin bugs, tachinid flies), known, but programs not developed.
  • Cultural control: before planting: plough deeply, hoe, remove weeds; during growth: hand pick, bag pods/buds in clear plastic bags, cage chickens in plots; after harvest: collect remains and destroy, plus destroy alternate hosts, volunteer and all ratoon cotton.
  • Chemical control: pyrethrum, synthetic pyrethroids, e.g., lambda-cyhalothrin. 

Common Name

Cotton stainers and pale cotton stainers.

Scientific Name

Dysdercus species. Several species have been recorded from Oceania; the most widespread are the cotton stainers, Dysdercus cingulatus, and the pale cotton stainer, Dysdercus sidae. They are members of the Pyrrhocordiae.


AUTHOR Grahame Jackson
Information from Stehlik JL (1965) Pyrrhocoridae and Largidae collected by E.S. Brown on Solomon Islands (Heteroptera). Časopis Moravského muzea. Vědy přírodní 50: 253-291; and Cotton stainer bugs (Pyrrhocordidae). (https://sown.com.au/pyrrhocoridae-cotton-stainer-bugs/); and Wilson L (2008) Pale cotton stainers, Dysdercus sidae. On Farm Series: IPM. Cotton Catchment Communities CRC. (http://www.insidecotton.com/xmlui/bitstream/handle/1/127/Cotton_Stainer.pdf?sequence=1&isAllowed=y); and from CABI (2021) Dysdercus cingulatus (red cotton stainer). Crop Protection Compendium. (https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.20225). Photo 1 Red cotton bug (Dysdercus cingulata) Fabricius. O.P. Sarma, Bugwood.org. Photos 3&5 Rushenb. Dysdercus Cingulatus-Fabricius, Red cotton stainer bug. Kaeng Krachan National Park. Photo 4 gailhampshire from Cradley, Malvern, UK. Pale cotton stainer bug. Pyrrhocoridae. Photos 4-6 Pita Tikai Kastom Gaden Association. Honiara, Solomon Islands

Produced with support from the Australian Centre for International Agricultural Research under project HORT/2016/185: Responding to emerging pest and disease threats to horticulture in the Pacific islands, implemented by the University of Queensland and the Secretariat of the Pacific.

Copyright © 2023. All rights reserved.