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Species Page

cucurbit beetle

Aulacophora indica
This information is part of a full datasheet available in the Crop Protection Compendium (CPC). Find out more information on how to access the CPC.
©CAB International. Published under a CC-BY-NC-SA 4.0 licence.

Distribution

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Extent
Invasive
Origin
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Host plants / species affected

Main hosts

show all species affected
Citrullus lanatus (watermelon)
Cucumis melo (melon)
Cucumis sativus (cucumber)
Cucurbita maxima (giant pumpkin)
Cucurbita pepo (marrow)
Cucurbitaceae (cucurbits)
Lagenaria siceraria (bottle gourd)
Vigna sinensis ssp. sesquipedalis (asparagus bean)

List of symptoms / signs

Fruit - external feeding
Inflorescence - external feeding
Leaves - external feeding
Roots - external feeding
Stems - external feeding

Symptoms

The feeding beetles cause large holes in the leaves, and may totally defoliate the plants; sometimes they prefer the flowers. The larvae are also very injurious to cucurbitaceous plants, gnawing at the roots and lower parts of the stem. In Asia and the Pacific, Samuelson (1994) observed that adults aggregate in large numbers on their cucurbit hosts, including flowers, on which they may eat pollen.

In Kyushu, Japan the adults feed on the surface of cucumber fruit and promote infestation by Corynespora melonis, the causative agent of target leaf spot (Hasama et al., 1993).

Prevention and control

Chemical Control

Due to the variable regulations around (de-)registration of pesticides, we are for the moment not including any specific chemical control recommendations. For further information, we recommend you visit the following resources:

Impact

In Indonesia the damage caused by A. indica, and the associated A. coffeae is sometimes serious on cucumber, melon and loofah. Melon cultures in Java often fail due to repeated attacks (Kalshoven, 1981).