Biology of <i>Metadelphax propinqua</i> (Fieber) (Homoptera, Delphacidae)

Authors

• Arja Vasarainen
• Mikko Raatikainen

DOI:

https://doi.org/10.33338/ef.83473

Abstract

The biology of the Turkish Metadelphax propinqua population was investigated in Finland. The egg closely resembles that of other delphacids, and the five nymphal instars are distinguished by the characteristics of the legs. The adults were macropters, brachypters orintermediary form. At 22°C the duration of the egg stage was 12 d, that of the nymphal stage 19 d, and that of the female stage 51 d. The average number of eggs was 1112 per female. In the trials the planthoppers oviposited 3.3.-3.5 eggs per group in the sheath or blade of the leaf.