Seasonal Prevalence of Adult Occurrence and Infestation of the Wheat Blossom Midge Si’odiplosis mosellana Gehin (Diptera: Cecidomyiidae) in Kyoto

Abstract

The beginning and peak of adult emergence of the wheat blossom midge, Sitodiplosis mosellat Gehin, coincided approximately with the heading time and full flowering time, respectively, the wheat cultivar “Norin No. 61” in Kyoto Prefecture. Eggs were deposited in a concentrate manner on the grains of the spikelet situated about one-third below the top of the wheat hea The larvae hatched out during several days and began to suck the sap of ovary. They passe through three stadia. The period of the first and second instars lasted about 10 days. A clo association between the time of escape of the mature larvae from the wheat grains and rainfa at the time of harvest was observed. © 1987, JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY. All rights reserved.