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Infestation of the mycoheterotrophic orchid Yoania japonica by the two-winged fly, Chyliza vittata (Diptera: Psilidae)

2016; Institute of Entomology; Volume: 113; Linguagem: Inglês

10.14411/eje.2016.050

1802-8829

Kenji Suetsugu,

Insect-Plant Interactions and Control

While the latter three dipteran families are less studied in this context, it is important to understand the interactions between orchids and their feeders, because of the endangered status of most orchids.The current study reports C. vittata feeding on the stems of the mycoheterotrophic orchid Yoania japonica in Japan, which was recorded by chance during an investigation of its pollination biology. MATERIAL AND METHODSThe fi eld study was carried out in Tateshina city, Kita-Saku county, in the Nagano prefecture of central Japan in mid-June 2012.The study site was in a cool, temperate area at an altitude of approximately 1600 m in a forested habitat dominated by Betula platyphylla with a sparse cover of understory plants.The Y. japonica population at this location was a mixture of the rosy pink fl owered form Y. japonica f. japonica and the creamy yellow fl owered form Y. japonica f. lutea (Suetsugu & Yagame, 2014), hereafter both of which are simply referred to as Y. japonica.The Infestation of the mycoheterotrophic orchid Yoania japonica by the two-winged fl y, Chyliza vittata (Diptera: Psilidae)