A Review of the Biology of Cerataphidini (Hemiptera, Aphididae, Hormaphidinae), Focusing Mainly on Their Life Cycles, Gall Formation, and Soldiers
Figure 14
Distribution of eggs laid by two syrphid species in and around a colony of the aphid Ceratovacuna lanigera formed on the grass Miscanthus sinensis. Eggs that were and were not attacked by aphid nymphs within first three days are indicated by dark grey and white areas, respectively, and those that disappeared within first three days by light grey areas. (a) Eupeodes kuroiwae. Although all laid eggs were attacked, the hatchability of attacked eggs in E. kuroiwae (71.9%) was much higher than that in Dideoides latus (29.8%) (2×2 Fisher’s exact test; ). (b) Dideoides latus. Eggs of D. latus that were laid more than 55 cm (the median) away from the colony were less likely to be attacked by aphid nymphs than those that were less than 55 cm away (2×2 Fisher’s exact test; ). Also, the hatchability of attacked eggs (29.8%) was lower than that of unattacked eggs (70.1%) (2×2 Fisher’s exact test; ) (redrawn and recalculated from data in [218]).
