Polish Journal of Entomology (Polskie Pismo Entomologiczne) (2005) 74, 455-463

D.R. Thakur (2005)
Phenology and polymorphism in Callosobruchus theobromae (Coleoptera: Bruchidae)
Polish Journal of Entomology (Polskie Pismo Entomologiczne) 74, 455-463
Abstract: Bruchids generally show phase dimorphism and seasonal variations in their populations. Callosobruchus theobromae (L.), a pest of Glycine max (soybean) and Dolichos lablab (sem) also shows phenological variations and polymorphism during different seasons of the year. Phenotypic variant populations possessed variable patterns of differently coloured setae on pygidium and elytra, variability in adult size, oviposition behaviour, developmental duration and longevity. These variations in setae colouration were prominent in female insects while longevity, developmental duration and size variability during different seasons was similar in both sexes.
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Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Callosobruchus theobromae	Soybean (Glycine max)	India
	Callosobruchus theobromae	Hyacinth bean (Lablab purpureus)	India