Cryptolaemus montrouzieri


SKU: WRCRP25

These are live insects and MUST be shipped OVERNIGHT. No USPS or ground shipping. 

Cryptolaemus montrouzieri, commonly referred to as the Mealybug Destroyer was originally imported into the United States from Australia in the 1890's for the control of Citrus Mealybug in California. They are currently used in Citrus for Citrus Mealybug; Grapes for Grape and Obscure Mealybug's; in the Caribbean for the Pink Hibiscus Mealybug; Greenhouses, Arboretums, Interiorscapes, Zoos and Aquariums for various species of mealybug's. Cryps are small coccinellid beetles, dark brown ladybugs with an orange head and tail (approximately 4 mm / 1/6 in long). The yellow eggs are deposited into the woolly egg masses singularly. The larvae are up to 13 mm (1/2 in) and are white with wax-like filaments covering them. Once the pupae hatch they are found in sheltered places (underside of leaves, stems, greenhouse structures etc). The adults and larvae of Cryps feed on all stages of the mealybug's. Young larvae and adults prefer mealybug eggs and smaller stages of the mealybug. Older larvae eat all stages. 

LIFECYCLE: Egg to adult 6.5 weeks, sex ratio of eggs 50% female, Each female adult lays 200-400 eggs, adults live 1-2 months. Development stages are Egg - 4 larval stages - pupa - adult. 

RELEASE INSTRUCTIONS: Cryptolaemus are sold as adults only. The packages contain paper strips for them to cling during shipment as well has drops of honey as a food source. Cryptolaemus prefer to feed on mealybug's and a few other closely related species (aphids, scales). Females deposit their eggs in the cottony egg mass produced by female mealybug's. Cryptolaemus are not as effective on mealybug's that do not produce egg masses, such as Long-tailed Mealybug. Cryptolaemus cannot survive sub-freezing temperatures and therefore need to be reintroduced in orchards or landscapes, where the winter temperature is too low. Once you have made it home with your Cryptolaemus, you should plan on releasing them as soon as but do not store them. Distribute Cryptolaemus by releasing live adults at various infestation sites, preferably early morning or late evening so that they settle more readily on the plants. The beetles are less active at this time and may be applied by shaking out the beetles close to mealybug infestations.. Avoid wearing white clothing while distributing - beetles are attracted to light colors. Release one or two times per year. Release 5 per plant or 1 per square foot. Pesticides and even wetting agents and spreader-stickers may adversely affect Cryps survival. Broad spectrum and systemic insecticides are toxic to Cryptolaemus. 

RELEASE RATES: These rates are for preventative control only, multiple releases and/or higher quantities are necessary for heavier infestation.

 

QUANTITY PER PACKAGE
APPROX. COVERAGE
25 Insects 25 sq. ft.
100 Insects 100 sq. ft.
1,000 Insects 1 Acre