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Tasman Lacewing for Aphid Control

btn order   Micromus tasmaniae – Predatory insect Aphidius.pdf

Tasman Lacewings are a small predatory insect that predates on a large variety of prey including aphids, citrus whitefly and psyllids.

Tasman Lacewings are known to be useful in indoor and outdoor crops such as, capsicum, cucumber, citrus, and other ornamentals as part of an integrated pest management programme.

The Pest – Aphids

Many different species of aphid are present in New Zealand. Some species are quite specific to particular crops, while other species infest a wide range of crops.

Aphids are soft-bodied insects that have globular bodies, long thin legs and antennae. Adult body length is normally 2-3 mm, and colour varies from pale yellow, green to dark brown or black. Some forms have wings and they can disperse rapidly.

Under optimum conditions, the life cycle of an aphid can be completed in 10-12 days. Many species reproduce asexually, and therefore populations can build up very rapidly.

Aphids feed with piercing-sucking mouthparts and can cause stunting and distortion, especially to younger leaves. Aphids are often plant virus vectors, and therefore rapid and effective control is essential to minimize crop losses.

Symptoms and signs of aphids include:

  • Stunting and distortion of the leaves and flowers
  • Yellowing and wilting of leaves
  • Honey dew and sooty mould present on the plants
  • Aphids visible on the stem, leaves and flower buds

The Solution – Tasman Lacewing

Tasman Lacewings are a predatory insect which as an adult grow to 7.5 - 10 mm in length. The Tasman lacewings are predatory in both the larvae and adult stages.

Known prey range in New Zealand as detailed by the Landcare Plant-SyNZ™ database include:

Scientific Name

Common Name

Allaphis foxtonensis (Cottier, 1953)

Sedge aphid

Bactericera cockerelli (Sulc, 1909)

Tomato Potato Psyllid

Brachycaudus helichrysi (Kaltenbach, 1843)

Leafcurl plum aphid

Brevicoryne brassicae (Linnaeus, 1758)

Cabbage aphid

Cavariella aegopodii (Scopoli, 1763)

Carrot aphid

Elatobium abietinum (Walker, 1849)

Spruce aphid

Eriosoma lanigerum (Hausmann, 1802)

Woolly apple aphid

Eulachnus brevipilosus (Borner, 1940)

Pine aphid

Melanostoma fasciatum (Macquart, 1850)

Small hoverfly

Metopolophium dirhodum (Walker, 1849)

Rose grain aphid

Micromyzella filicis (Van der Groot, 1917)

Green fern aphid

Myzus ornatus (Laing, 1932)

Ornate aphid

Neophyllaphis totarae (Cottier, 1953)

Totara aphid

Orchamoplatus citri (Takahashi, 1940)

Australian citrus whitefly

Phenacoccus graminicola (Leonardi, 1908)

Grass mealybug

Pineus boerneri (Annand, 1928)

Pine woolly aphid

Pineus pini (Macquart, 1819)

Pine adelgid

Pseudococcidae sp.

 

Rhopalosiphum padi (L., 1758)

Cereal aphid

Toxoptera aurantii (Boyer de Fonscolombe, 1841)

Black citrus aphid

Trioza vitreoradiata (Maskell, 1879)

Pittosporum psyllid

Neotoxoptera formosana

Onion Aphid

The adults are brown with two pairs of wings that cover their bodies. They have small heads with large black compound eyes and long antennae that are held out in front. The first larva stage is approximately 1.8 mm long and will grow to 7 – 9 mm within 7 days. Once a larva has matured it will form a pupa cocoon for around 10 days before emerging as an adult. The lifespan can range from 50 to 140 days depending on temperature and prey availability.

Environmental Conditions

Tasman lacewings are best suited to temperatures above 5°C, below this temperature threshold the young life stages will take additional time to develop.

Packaging

Tasman Lacewings are dispatched as “eggs on a cloth packed in a box”, and sent via courier.

Release rate

  • 1-5 Tasman Lacewings eggs per m2 as a moderate CURATIVE measure, over several weeks as aphids are found in the crop
  • Heavier infestations of aphids can benefit from the simultaneous release of Aphidius, or may require initial chemical intervention (contact Bioforce to discuss).

Release and Storage Instructions

Tasman Lacewings need the following handling and treatment:

  • On arrival, release Tasman Lacewings into the crop as soon as possible
  • Do not expose Tasman Lacewings to direct sunlight
  • DO NOT REFRIGERATE
  • Release Tasman Lacewings near an aphid ‘hot spot’, and then evenly distribute the eggs throughout the area requiring treatment

Post Release

Aphidius will start predating aphids after hatching. The larval and adult life stages are both predatory. 

Before introducing Tasman Lacewings into your crop please check residual chemical affects and ensure you know chemical compatibilities of products that may be applied.

A list of compatible pesticides and withholding periods can be found in the publication ‘The Good Bug Book’ Second Edition (2002), Editor Richard Llewellyn. Excerpts of the book can be obtained from the Tasman Lacewing page of the Australasian Biological Control Association website, click here then scroll to the bottom of the page and click on the PDF link.

Price

 

PRICE: $15.00 per 100 eggs (minimum order) plus GST and Freight

About us

We rear and sell biological control agents, the good guys, for the control of plant pests and diseases. Bioforce advocates the sustainable management of horticultural crops.
 

Testimonials

“We'd love to get feedback regarding our products, services, and the use of biological control. Please email us with you're comments using the email address to the right” 
 
Bioforce Team
 

Contact Details

Ph: (09) 294 8973
Fax: (09) 294 8978
office@bioforce.net.nz
Address: P.O Box 73,
Drury 2247,
New Zealand