Phenotypic variation in colour pattern and seasonal plasticity in Eristalis hoverflies (Diptera: Syrphidae)
Version of Record online: 14 MAR 2008
Volume 18, Issue 3, pages 209–217, August 1993
How to Cite
HOLLOWAY, G. J. (1993), Phenotypic variation in colour pattern and seasonal plasticity in Eristalis hoverflies (Diptera: Syrphidae). Ecological Entomology, 18: 209–217. doi: 10.1111/j.1365-2311.1993.tb01092.x
- Issue online: 14 MAR 2008
- Version of Record online: 14 MAR 2008
- Accepted 8 March 1993
- phenotypic variation;
- phenotypic plasticity;
- colour variation;
- seasonal variation
- 1An examination of phenotypic variation in colour pattern was carried out on four Eristalis hoverfly species using museum material.
- 2The amount of phenotypic variation varied substantially among the species with E.arbustorum being the most variable. The other species showed a wide colour pattern range but less variation within that range (E.abusivus and E.nemorum), or a narrow range of colour variation (E.horticola).
- 3Sexual colour dimorphism was apparent in all four species, but most pronounced in E.abusivus and E.nemorum.
- 4There were good phenotype-season relationships shown by both sexes in all species, except for female E.abusivus and E.nemorum, with paler insects being more abundant during the warmer summer months.
- 5Female, but not male, E.arbustorum collected at inland sites were on average paler than those collected at coastal sites. This observation is considered with respect to temperature during the developmental stages.
- 6The function of colour plasticity in hoverflies is discussed with reference to the need to maintain optimal thermal conditions for activity.