Host age influence on the parasitism of the species Cotesia vestalis (Haliday) (Hymenoptera: Braconidae)

Egyptian Journal of Biological Pest Control

Table 2 Developmental period of C. vestalis starting parasitism in the II, III and IV instars of P. xylostella

Host instar	Mean development time (days ± SE)
	Stinging to cocoon formation	Cocoon stage	Stinging to adult emergence	Adult longevity
	Stinging to cocoon formation	Cocoon stage	Stinging to adult emergence	Male	Female
II	8.2 ± 0.4^a	6.8 ± 0.2^a	15.0 ± 0.5^a	9.8 ± 0.4^a	11.8 ± 0.5^a
III	7.4 ± 0.2^a	6.1 ± 0.3^a	13.4 ± 0.2^a	10.0 ± 0.3^a	11.8 ± 0.4^a
IV	8.0 ± 0.3^a	6.2 ± 0.3^a	14.0 ± 0.5^a	9.8 ± 0.4^a	11.3 ± 0.6^a

Values superscripted by the same letter in the column do not differ significantly at p ≤ 0.05