Predatory lady beetle, Lindorus lophanthae for scale insect control

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Product Details

Predatory Lindorus (Rhyzobius) lophanthae are commonly known as singular black lady beetles or scale destroyer beetles and they belong to order Coleoptera. These predatory lady beetles (Lindorus lophanthae) are small about 2-3 mm long with blackish fuzzy body and orange colored thorax. Females of black lady beetle generally lay several hundred eggs under the body of scale insects. Eggs hatch into grey colored larvae that develop through four developmental stages within 3 weeks and become adults. Matured larvae are about 3 mm long. The optimum temperature for their reproduction and development is is between 68- 86°F(20- 30°C) and relative humidity over 60%. Both larvae and adults are predatory in nature and feed on scale insects that are the most important pest of many shrubs and trees.

Facts (show all)

- Effective against the following pests
  • Black scale, Saissetia oleae, Saissetia coffeae
  • California red scale, Aonidiella aurantii
  • Citrus black parlatoria scale, Parlatoria ziziphi
  • Eggs of various insects
  • Mealybugs
  • Oleander scale, Aspidiotus nerii
  • Oriental red scale, Aonidiella orientalis
  • Purple Scale, Lepidosaphes beckii
+ Key factors for Lindorus lophanthae effectiveness
  • These black lady beetles are very active in searching their hosts such as scale insects and mealybugs even at as low as 41°F (5°C)temperature.
  • The activity of black lady beetles is enhanced when temperature is between 68- 86°F (20- 30°C).
  • They are known to eat both armoured and soft scales.
  • Since females of this black lady beetles lay eggs underneath scale insects, after hatching from eggs their larvae can eat scale eggs and their crawlers.
  • As female black lady beetles lay a large number of eggs, they will have a large number of larvae to combat a very high population of scale insects or mealybugs in the gardens or fields.
+ How predatory Lindorus lophanthae works in the field
  1. These black lady beetles are supplied as pre-fed and pre-mated adults.
  2. When released in the scale infested gardens or field, the pre-mated females start laying several hundred eggs under the body scale insects.
  3. Eggs hatch into small larvae that start feeding on eggs and crawlers of scale insects and develop through four developmental stages within 3 weeks and become adults.
  4. These adults then start feeding on the eggs, crawlers, and adults of scale insects.
  5. While feeding on their hosts, these black lady beetle adults mate and females start laying eggs that hatch into small larvae and thus they will recycle themselves after first application.
  6. These black lady beetles, Lindorus lophanthae perform better against scale insects when temperature is above 41°F (5°C).
+ Which stages of scale insects are killed by Lindorus lophanthae?
  • Eggs
  • Crawlers
  • Adults
+ How many Lindorus lophanthae predatory black lady beetles should be released?
  • Release 1 adult of predatory Lindorus lophanthae beetle/ sqft area
+ When and how Lindorus lophanthae predatory black lady beetles should be released for the effective control of scale insects?
  • It is better to release these black lady beetles in the evening of the day of their arrival.
  • If you are not ready to release, store them not more than 12 hours at cool temperature in a dark place.
  • When you are ready to release these beetles, open the containers or bottles while walking in the crop and tap out these lady beetles evenly on the plants that are infested with scale insects.
+ Why you need them
  • they can reduce the crop damage by feeding on the eggs crawlers and adults of scale insects
  • they are able to actively search for their host, the different species of scale insects
  • they can reproduce and continue their life cycle in the garden after first application
  • they are commercially available and easy to release in the greenhouses or fields
+ Why they are safer than traditional pesticides
  • they do not damage plants
  • do not cause any harm to the personnel involved in their production and application
  • food products are safe to handle and eat when they are treated with predatory predatory black lady beetles
  • they do not harm humans, animals and pollute the environment
+ Research Papers
  1. Smith, T.R. and Cave, R.D. 2006. Pesticide susceptibility of Cybocephalus nipponicus and Rhyzobius lophanthae (Coleoptera: Cybocephalidae, Coccinellidae). Florida Entomologist 89:502-507.
  2. Stathas, G. J. 2000. Rhyzobius lophanthae prey consumption and fecundity. Phytoparasitica 28: 203-211.
  3. Stathas, G. J. 2000. The effect of temperature on the development of predator Rhyzobius lophanthae Blaisdell (Coleoptera: Coccinellidae) and its phenology in Greece. BioControl 45:439–451.
  4. Stathas, G. J. 2001. Studies on morphology and biology of immature stages of the Predator Rhyzobius lophanthae Blaisdell (Col.: Coccinellidae). Journal of Pest Science 74:113–116.

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