Biological characters of Euplectrus xanthocephalus Girault (Hym.: Eulophidae) ectoparasite on Spodoptera litura Fabr. larvae

Authors

  • Nguyen Thi Thu
  • Tran Ngoc Lan
  • Vu Quang Con

DOI:

https://doi.org/10.15625/0866-7160/v32n2.684

Abstract

Research on biological characters of Euplectrus xanthocephalus ectoparasite on Spodoptera litura Fabr. larvae in Nghe An province shows the following results:

In rearing condition at 25oC, 67% RH, life cycle of Euplectrus xanthocephalus is 14,95 ± 0,09 days;

E. xanthocephalus is ectoparasite on Spodoptera litura Fabr. larvae from 1 instar to 4 instar larvae, specially the highest parasitic rate concentrate on 2 instar and 3 instar larvae of the host. They do not parasite on other age of Spodoptera litura Fabr. larvae (5 instar and 6 instar larvae);

Eggs were laid on all three thoracic segments and abdominal segments 1-8, with a maximum number of eggs laid on the third thoracic segment to the second abdominal segments;

Most of E. xanthocephalus eggs were laid on back of host, some of them on side and the eggs were not laid on venter of host;

Sex ratio (female: male) is 2: 1.

Key words: Biological characters, ectoparasite, life cycle, suitable instars for parasitizing, Euplectrus xanthocephalus, Spodoptera litura.

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Published

08-05-2012

How to Cite

Thu, N. T., Lan, T. N., & Con, V. Q. (2012). Biological characters of Euplectrus xanthocephalus Girault (Hym.: Eulophidae) ectoparasite on Spodoptera litura Fabr. larvae. Academia Journal of Biology, 32(2), 24–30. https://doi.org/10.15625/0866-7160/v32n2.684

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