Photo 1. 'Whitehead' - a symptom caused by stem borers: the base of the panicle is damaged preventing it from emerging or, if already emerged, the grain is unfilled and white.
White rice borer; also known as the paddy stem borer.
Scirpophaga nivella; however, there are other Scirpophaga species and there has been confusion between them; e.g., Scirpophaga excerptalis is a pest of sugarcane, Scirpophoga incertulas, yellow stem borer, occurs on rice as does Scirpophaga innota, white rice stem borer. Some authors consider Scirpophaga nivella to be the sugarcane top borer, and a miner pest of rice. Additionally, in the introduction to Scirpophaga nivella, PaDIL states: "This species is the same moth as the Australian species, Scirpophaga chrysorrhoa..." These moths belong in the Crambidae.
AUTHOR Grahame Jackson
Information (and Photo 1) Rice Knowledge Bank. IRRI. (http://www.knowledgebank.irri.org/training/fact-sheets/pest-management/insects/item/stem-borer); and CABI Scirpopaga nivella (2019) Crop Protection Compendium. (www.cabi.org/cpc); and Khan ZR et al. (1991) World bibliography of rice stem borers 1794-1990. IRRI/ICIPE; and White rice borer (and Photos 2-4) Anderson S, Tran-Nguyen L (2012) White Rice Borer (Scirpophaga nivella). (Source: N. Sallam DAFF Biosecurity.) PaDIL - (https://www.padil.gov.au); and from Pathak MD, Khan ZR (1994) Insect Pests of Rice. IRRI/ICIPE. Photo 5 CBG Photography Group, Centre for Biodiversity Genomics. (http://v3.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=271138). Photo 6 Anderson S, Tran-Nguyen L (2012) Gold-fringed Rice Borer (Chilo auricilius). PaDIL - (https://www.padil.gov.au)
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 Community.
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