Variation in wing dimorphism of oriental mole cricket Gryllotalpa orientalis: Comparative study in Okinawa and Hyogo populations
Article first published online: 6 JAN 2011
© 2011 The Entomological Society of Japan
Volume 14, Issue 1, pages 103–105, January 2011
How to Cite
ENDO, C., IKEDA, Y. and SATOH, A. (2011), Variation in wing dimorphism of oriental mole cricket Gryllotalpa orientalis: Comparative study in Okinawa and Hyogo populations. Entomological Science, 14: 103–105. doi: 10.1111/j.1479-8298.2010.00419.x
- Issue published online: 6 JAN 2011
- Article first published online: 6 JAN 2011
- Received 17 May 2010; accepted 30 August 2010.
- flight period;
- geographic variation;
- life cycle;
- seasonal wing dimorphism
The oriental mole cricket Gryllotalpa orientalis exhibits variation in wing dimorphism. In an Okinawa population, no short-winged individuals were observed, and wing dimorphism has not been detected. Flight behavior of G. orientalis was observed from April to October in Okinawa. In contrast, a Hyogo population exhibited seasonal wing dimorphism and long-winged individuals appear from June to September. The flight period of the long-winged morph coincided with this period. Short-winged individuals appeared from September to the following June and they never fly. Both populations showed univoltine life cycles. Considering the possible flight period, wing pattern and life cycle of mole crickets in these two areas, it is presumed that flightlessness is expected to arise when adults can not experience suitable temperatures for flight activity.