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Catalogue: Broadacre Field Crops DAFF QLD
A two-toned caterpillar parasite - a newly emerged adult wasp from a host pupa.. Heteropelma are often seen flying above sorghum, cotton and other summer crops... Heteropelma stings caterpillars at third instar stage and older, although third and fourth instars (8-23 mm) are preferred...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult orchid dupe showing orange and black sections and white spots on side of the body.. Male Lissopimpla excelsa wasps are commonly called the orchid dupe because they are tricked into pollinating orchids... Male Lissopimpla wasps mistake the flowers for females and attempt to mate with the flower, pollinating it in the process...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult orchid dupe showing orange and black sections and white spots on side of the body.. Male Lissopimpla excelsa wasps are commonly called the orchid dupe because they are tricked into pollinating orchids... Male Lissopimpla wasps mistake the flowers for females and attempt to mate with the flower, pollinating it in the process...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult orchid dupe showing orange and black sections and white spots on side of the body.. Male Lissopimpla excelsa wasps are commonly called the orchid dupe because they are tricked into pollinating orchids... Male Lissopimpla wasps mistake the flowers for females and attempt to mate with the flower, pollinating it in the process...
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Catalogue: Broadacre Field Crops DAFF QLD
Image of a Microplitis demolitor wasp stinging a helicoverpa larva.. Microplitis adult aproaching a helicoverpa larva... Look for them flying above the crop or use a sweep net to sample the crop collect caterpillars shorter that 15 mm and perform the split test to estimate percent parasitism (number parasitised total larvae split x 100) look for visible signs of parasitoid activity, e.g. the distinctive fawn cocoons and/or small pale caterpillars that might be infected with ascovirus cross-check crop scouting data - if eggs and very small caterpillars do not seem to be developing through to larger caterpillars (>15 mm), this may be due to Microplitis activity...
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Catalogue: Broadacre Field Crops DAFF QLD
Image of a Microplitis demolitor wasp stinging a helicoverpa larva.. Microplitis adult aproaching a helicoverpa larva... Look for them flying above the crop or use a sweep net to sample the crop collect caterpillars shorter that 15 mm and perform the split test to estimate percent parasitism (number parasitised total larvae split x 100) look for visible signs of parasitoid activity, e.g. the distinctive fawn cocoons and/or small pale caterpillars that might be infected with ascovirus cross-check crop scouting data - if eggs and very small caterpillars do not seem to be developing through to larger caterpillars (>15 mm), this may be due to Microplitis activity...
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Catalogue: Broadacre Field Crops DAFF QLD
Image of a Microplitis demolitor wasp stinging a helicoverpa larva.. Microplitis adult aproaching a helicoverpa larva... Look for them flying above the crop or use a sweep net to sample the crop collect caterpillars shorter that 15 mm and perform the split test to estimate percent parasitism (number parasitised total larvae split x 100) look for visible signs of parasitoid activity, e.g. the distinctive fawn cocoons and/or small pale caterpillars that might be infected with ascovirus cross-check crop scouting data - if eggs and very small caterpillars do not seem to be developing through to larger caterpillars (>15 mm), this may be due to Microplitis activity...
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Catalogue: Broadacre Field Crops DAFF QLD
Armyworm larvae are difficult to find in cereals crops as they hide at the base of plants or under clods of soil during the day... Search at the base of plants and under clods of soil to estimate the number of larvae per square metre... Monitor for larvae at dusk with a sweep net; sweep netting during the day can be unreliable...
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Catalogue: Broadacre Field Crops DAFF QLD
" Print the page sitona weevil, Sitona discoideus, scalloped leaf damage Scalloped leaf damage... Larvae feed within or on the root nodules and can cause more serious damage than adults by reducing nitrogen fixation and retarding plant growth... Larvae feed through the winter and early spring to pupate in the soil and emerge as adults in late spring/early summer...
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Catalogue: Broadacre Field Crops DAFF QLD
" Print the page sitona weevil, Sitona discoideus, scalloped leaf damage Scalloped leaf damage... Larvae feed within or on the root nodules and can cause more serious damage than adults by reducing nitrogen fixation and retarding plant growth... Larvae feed through the winter and early spring to pupate in the soil and emerge as adults in late spring/early summer...
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