Polish Journal of Entomology (Polskie Pismo Entomologiczne) (2004) 73, 161-170

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Desh R. Thakur and Harjeet S. Banyal (2004)
Life history of Callosobruchus theobromae (L.) (Coleoptera: Bruchidae) on Dolichos lablab (L.) in the field
Polish Journal of Entomology (Polskie Pismo Entomologiczne) 73 (3), 161-170
Abstract: Biology of Callosobruchus theobromae on the seeds and pods of Dolichos lablab has been studied under natural atmosphere conditions in the fields of host plant. After passing the winter as hibernated larvae, adults emerged during the months of next March and April. Amorous males impregnated the females among the seed and pods of host plant. Eggs laid on seeds and pods developed into first instar larvae, which penetrated the seeds of host plant. Remaining life cycle was completed inside the host seed, and adults came out by cutting a circular window in the testa of host seed. Six to seven overlapping generations have been recorded between April to October. The life cycle is completed in 28.9 ± 1.72 days. Eggs and larvae but not the adult bruchids are parasitized by some hymenopteran parasitoids. Egg endoparasitoid, Uscana femoralis (PANJI et SOOD) destroyed the host eggs before hatching and can be included as biocontrol measure of the pest.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Callosobruchus theobromae Hyacinth bean (Lablab purpureus) India
Uscana femoralis (parasitoid) Callosobruchus theobromae Hyacinth bean (Lablab purpureus) India