Biological anomalies in the sugarcane leafhopper, Pyrilla perpusilla (Walker) due to parasitism by Fulgoraecia melanoleuca (Fletcher) (Lepidoptera: Epipyropidae)

Egyptian Journal of Biological Pest Control

Table 1 Effect of parasitism by F. melanoleuca on the longevity of P. perpusilla nymphs

Host (nymphs) stage at time of parasitism	Longevity of nymphs (mean ± SE) in days	Increase ( +) or decrease ( −) in days over control
1st	**	**
2nd	19.00 ± 0.45a (n = 6)	− 8.32
3rd	31.67 ± 0.21c (n = 25)	+ 4.35
4th	35.43 ± 0.43d (n = 62)	+ 8.11
5th	32.02 ± 0.41c (n = 59)	+ 4.70
Control (un-parasitized)	27.32 ± 0.30b (n = 100)	–

^**No successful parasitism in 1st nymphal stage of P. perpusilla; Means within column followed by different letters are significantly different (p < 0.05)