Scientific Name: Spenophorus brunnipennis
Order: Coleoptera


The immature billbug (also known as the La Plata weevil) is a legless, creamy-white ‘C’ shaped larvae with an orange head capsule, with a body up to 10mm long. When mature the larvae metamorphoses Dark brown to black weevil, with a distinctive ‘bill’ like snout, and elbowed antennae. Young adults often have dark brown striping on the wing casings, bodies up to 10mm long.

Biology and Lifecycle

Adult billbugs deposit their eggs within the plant stem, where the larvae develop and feed on the plant. It is at this stage of development that the most severe damage is inflicted to turf grass. As the larvae continue to develop, they exit the plant and begin to feed on the stem and roots. Depending on location and weather conditions billbugs generally lay their eggs during October to December. The eggs develop into larvae after 2 weeks and immediately begin feeding as they burrow their way down through the plants to roots. These insect pupae, remain in the soil from late summer to early Autumn. Billbugs have a one or possibly two year life cycle and overwinter as young adults.

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Products to Use Billbug

Quali-Pro Twister


Quali-Pro Twister is a highly effective insecticide for robust knockdown and residual control of Argentine Stem Weevil, Billbug and African Black Beetle in turf. Formulated as…

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Tetrino Turf Insecticide controls insect pets in turf including on golf courses, sports fields, bowling greens, race tracks, recreational lawns and…

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Tempo XTRA

Tempo Xtra 5L (Straight)_RGB copy

Tempo XTRA is a unique dual mode of action insecticide designed to control tough pests in Turf and Ornamental situations. In Turf,…

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Spinner turf insecticide is a highly systemic insecticide providing rapid control of insect larvae and including Stem Weevil. Spinner can be used…

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Pride 2 sizes

Pride insecticide contains the active constituent of 200g/L Imidacloprid. Pride’s systemic action provides control of a range of insect pests in turf…

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Meridian new

Meridian insecticide is a water dispersible granule that provides effective control on a wide variety of insects and grubs, killing through…

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Columbus 10L cropped

Columbus is an excellent translaminar and systemic insecticide. Columbus insecticide has contact, stomach and systemic activity, for the effective control of…

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