Couch Smut - Ustilago cynodontis

Most Queenslanders have heard of the smut disease affecting sugar cane in the Bundaberg area. A much sma[...]

Oedema - Camellia

'Oedema' is the term used for small corky brown or grey scabby areas on the leaves.  The affected tissue is hard and may occur on only a f[...]

Ophiobolus patch - Gaeumannomyces graminis var. avenae

This disease of bent grass is caused by the same fungus that causes 'take-all' in wheat.  It severely[...]

Parsnip canker - Iteresonilia perplexans

Symptoms of this fungal disease appear on the upper widest part of the root as a brown or reddish rough surface.  Later, th[...]

Pestalotiopsis - camellia - Pestalotiopsis sp.

This fungus invades areas of leaf that are already sunburnt or damaged in some other way.  The area usually becomes s[...]

Petal Blight - Ovulinia azaleae

The buds and flowers are the only part of the plant affected by this fungal disease.  The disease is usually first noticed as circul[...]

Phytophthora blight - passionfruit - Phytophthora nicotianae var. parasitica

The fungus that causes this disease is a soil inhabitant and produces spores on the soil sur[...]

Phytophthora root rot - Phytophthora ssp.

These fungi start by infecting the root hairs and rotting fine roots.  Rotting of larger roots and the stem base may follo[...]

Powdery mildew - apple - Podosphaera leucotricha

This serious disease shows up as a white powdery covering on buds, shoots, leaves and fruit.  If buds are affected [...]

Powdery mildew - cucurbits (Oidium sp.)

This fungal disease is widespread and worse in warm dry conditions.  It is spread from affected plants by spores carried in [...]

Powdery mildew - grape Oidium sp.

This disease is characterised by greyish-white powdery sports on leaves, shoots and berries.  The fungus also damages the flowers [...]

Powdery mildew - papaw - Oidium sp.

Damage is most serious on green fruit.  And although many parts of the plant are susceptible, symptoms are most common on older [...]

Powdery mildew - rose - Oidium sp.

This fungal disease produces a fine white coating on the surface of leaves and buds.  In severe cases it also infects stems, part[...]

Powdery mildew - strawberry - Oidium sp.

On strawberries, powdery mildew does not always produce its characteristic greyish-white growth.  Usually the first symptom[...]

Powdery mildews

The term 'powdery mildew' applies to a group of related fungi.  Some of them can attack a range of different plants, while others attack onl[...]

Powdery scab - Spongospora subterranea

This disease is characterised by small brown blister-like swellings about 2mm across on the tubers.  The swellings may enlarg[...]

Purple Top Wilt - Potato

This disease is caused by a mycoplasma which is spread from plant to plant by the common brown leafhopper (Orosius Argentatus), a small sap-suck[...]

Ray Blight - Chrysanthemum - Didymella Ligulicola

This disease shows up first as tiny dark-pink spots on the petals. It often starts on one side of the flower, causing t[...]

Red Thread - Laetisaria Fuciformis

This disease is charactised by mottled patches of grass. Some leaves in the affected area are tan-coloured and dead, while others rema[...]

Rhizoctonia Scab - Rhizoctonia Solani

The disease is worse in cool moist conditions and often attacks in the early stages of plant growth. On potatoes in the initial sta[...]

Ringspot - Camellia

This is thought to be caused by a virus but affected plants still grow and produce flowers normally. As the leaves age, the faint green rings develop[...]

Mosaic - Potato

Several different viruses causes mosaic symptoms on potatoes and other related plants.  These viruses are referred to as 'potato viruses X, A an[...]

Mosaic - Rose

This disease is cuased by a complex of viruses and is characterised by yellow patterns on the leaves.  Thesee patterns are variable and range from all[...]

Mosaic - Turnip

On cabbage, cauliflower and broccoli, the first symptoms of this virus disease are yellow rings on the youngest leaves.  Later the leaves are mottle[...]

WHITE LOUSE SCALE (Unaspis citri)

The infestation begins on the trunk and may not be noticed for a considerable period of time.  The male scale covers are white and[...]

Mites - Class Arachnida

Other animals in Class Arachnida include ticks, spiders and scorpions. The group of mites which cause plant damage include the eriophyid mites su[...]

WHITE PALM SCALE - Phenacaspis eugeniae

These hard scales are found most commonly under the leaves of the plant, but if a large population develops, they may also be fou[...]

WHITE WAX SCALE (Ceroplastes destructor)

The mature scales, which are found on the twigs, are all females and their protective white or greyish-white waxy covereings may[...]

WHITEFLIES Order Hemiptera: Family Aleyrodidae

There are about 20 species of whitefly known in Australia.  THe adult have a wingspan of about 3mm and are covered with a powdery wax;[...]

WHITEFRINGED WEEVIL (Graphognathus leucoloma)

These insects are long-lived and can cause considerable damage in an area once they have become established.  The adul[...]

The spiralling whitefly (Aleurodicus dispersus) is a tropical pest to a variety of horticultural crops, ornamental plants and shade trees. It is believed to have originated in the wet tropics of [...]

WHITESTEMMED GUM MOTH (Chelepteryx collesi)

This large moth has a pattern of wavy grey-brown lines on the wing, which spread to about 150mm.  The body is covered th[...]

WINGLESS GRASSHOPPER (Phaulacridium vittatum)

Eggs are laid in the soil, usually in small bare areas, and hatch in spring.  The young numphs feed on very low-growin[...]

WOOLLY APHID (Eriosoma lanigerum)

These aphids feed on the root system and the woody above-ground parts of the tree.  They are also found around the fruit stalks on[...]

WOOLLY GIAN MEALYBUG (Monophlebulus pilosior)

This native Austrlian insect sucks sap but is never present in sufficient numbers to cause damage.  It is oval in shap[...]

WOOLLYBEAR CATERPILLAR (Spilosoma glatignyi)

These are the larve of some of the moths in family Arctiidae.  They are thickly covered with bands of black and brown h[...]

YELLOW PEACH MOTH - Lepidoptera: Geometridae
Heterolocha aristonaria
urabenieda-shaku

The caterpillars are pinkish with darker oval spots[...]

Mosaic - Iris

This is a virus disease. On iries that grow from a rhizome, symptoms are light yellow-green streaks on the foliage. These streaks widen and brown and the l[...]

Leaf Blight - Carrots - Alternaria Dauci

This fungus causes small spots on the leaves. A yellow region develops around each spot, and the leaves take on a general yellow[...]

Leaf Blight - Strawberry - Phomopsis Obscurans

This fungal disease can attack fruit stalks, leafstalks and stolons but the most obvious symptoms are on the leaves. The s[...]

Leaf Blight - Sweet Corn - Drechslera Turcica

This disease is characterised by long, thin, greyish-green to tan patches. They may reach 30mm wide to 120mm long. If a num[...]

Leaf Blight - Umbrella Tree - Alternaria Panax

This disease is characterised by dark-brown to black patches on the leaves. These may enlarge to involve a quarter or more[...]

Leaf Curl - Peach - Taphrina Deformans

Look for this fungal disease in spring and early summer. Infected leaves are puckered or curled and much thicker than usual. They [...]

Leaf Gall - Azalea - Exobasidium Vaccinii

This fungus may attack leaves, flowers or seed pods, but symptoms are most often seen on the leaves. Whole leaves or parts of l[...]

Leaf Gall - Camellia - Exobasidium Camelliae

This fungal disease is able to infect the plant only when the leaves are extremely small. The fungus influences some of the [...]

Leaf Nematodes - Aphelenchoides spp.

These nematodes can live on the plant in moist areas around or in the junction between leafstalks and stem if the weather is dry. Th[...]

Leaf Roll - Potato

Plants infected with this virus are usually stunted and have a very stiff, upright appearance. The leaf edges are rolled upwards, and if the plants ar[...]

Leaf Scorch - Bulbous Plants - Stagonospora Curtisii

Daffodil and jonquil leaves may show symptoms soon after they appear above ground. The leaf tips are reddish-brown a[...]

Leaf Speckle - Mycosphaerella Musae

A smoky discolouration of the undersides of the leaves if that first sign of speckle. The leaves yellow in the affected areas, and th[...]

Leaf Spot - Banana - Mycosphaerella Musicola

This fungal leaf spot - which is also known as 'Sigatoka Disease' - is widespread and shows up most between May and [...]

Leaf Spot - Blackcurrant - Septoria Ribis

This fungal disease is common if spring and summer are unusually wet. It shows up on the leaves as light-grey angular spots wit[...]

Leaf Spot - Brush Box - Elsinoe Tristaniae

This fungal disease may be referred to as 'yellow leaf spot'. The spots, which are a dull fawnish-yellow, may grow to [...]

Leaf Spot - Chrysanthemum - Septoria spp.

The first signs of this disease are yellowish areas on the leaves, often near the edges. These become dark-brown circular spots[...]

Leaf Spot - Dahlia - Entyloma Dahliae

This fungus causes roundish spots of yellow-green on the leaves. These later go brown and dry out. The spots may be surrounded by a[...]

Leaf Spot - Eucalypt - Mycosphaerella spp.'

There are many different fungal leaf spots of eucalypts, but most are hardly noticed. However, there is a more noticeable[...]

Leaf Spot - Gerbera - Septoria Gerberae

This fungal disease is most likely to be seen in late summer or autumn. The spots begin brown to deep purple but develop grey to [...]

Leaf Spot - Grevillea - Placoasterella Baileyi

This disease is characterised by more or less circular black spots on the leaves. It can disfigure the plant but probably [...]

Leaf Spot - Indian Hawthorn - Entomosporium Mespili

This disease is characterised by round spots up to 10mm across. They develop a light-grey centre and a brown edge. Fu[...]

Leaf Spot - Iris - Cladosporium Iridis

This diseased first shows up as tiny brown spots, each with a watersoaked area around it. As these spots enlarge they turn grey an[...]

Leaf Spot - Ivy - Colletotrichum Trichellum

This fungus is most likely to be damaging in cool spring weather and on ivy plants growing in cool, damp situations or areas.[...]

Leaf Spot - Mulberry - Phloeospora Maculans

In the spring, leaves are infected by spores blown from fallen leaves. Pinhead-size dark-brown spots appear on the leaves. Th[...]

Leaf Spot - Rhubarb - Ascochyta Rhei

This fungal disease begins as small circular brown spots on the leaves. As the spots get bigger, they develop reddish-brown borders [...]

Leaf Spot - Strawberry - Mycosphaerella Fragariae

The well-defined spots caused by this fungus begins brownish but later change to light grey or white in the centre and [...]

Leaf Spot - Turf - Drechslera spp.

This disease is characterised by patches which occur in mid-to late summer especially in hot humid weather. They normally grow to abou[...]

Leaf Spot - Violet - Cercospora Violae

Violet leaves that are spotted are likely to have been infected by this fungus. This problem can be serious. If the disease is spr[...]

Lettuce Big Vein

The symptoms of this viral disease are most pronounced in winter. The problem is most likely to occur if soils are wet and heavy.

The disease i[...]

Lettuce Necrotic Yellows

This viral disease results in stunting and yellowing of the plants and development of one side of the plant more than the other. The leaves may [...]

Lichens

Each of these plants is a symbiotic association of a fungus and an alga. The fungus shelters the algal cells and the algal cells produce food for the fungal cell[...]

Magnesium Deficiency - Citrus

Magnesium deficiency shows up first on older leaves. The leaves begin to yellow near the midrib, and this yellow blotch enlargers until the[...]

Melanose - Citrus - Diaporthe Citri

This fungus causes reddish-brown to dark-brown tiny dots on the leaves or fruit. If few spores are present the dots will be spaced fa[...]

Mistletoes

There are many different species of these parasitic plants. The sticky seeds are spread by birds. When they germinate, root-like growths are sent into the hos[...]

Mosaic - Cucurbits

This disease is caused by the watermelon mosaic virus. The symptoms are mottling of the leaves in light and dark green. The leaves may become distorte[...]

Late Blight - Potato - Phytophthora Infestans

This disease often begins at the leaf margins as areas of a different colour green which later enlarge and go dark brown. T[...]

Leaf and Pod Spot - Pea

This problem is caused by several fungi (Mycospharella sp. and Ascochyta spp.) and shows up as brown to black and purple blotches on pods, stems [...]

Gummy Stem Blight - Cucurbits - Didymella Bryoniae

Symptoms may appear on the leaves and fruit, but stem symptoms are most common. These occur mostly around the crown of[...]

Halo Blight of Beans - Pseudomonas Syringae pv. Phaseolicola

This bacterial disease is first introduced into a planting through diseased seed. Plants growing from the di[...]

Infectious Variegation - Camellia

This condition is characterised by variable symptoms which include small yellow marks here and there on the leaves, groups of yellow ma[...]

Ink Disease - Kangaroo Paw

Black spots on stems and leaves may indicate a fungal disease. However, note that almost any type of damage causes black marks on these plants[...]

Iron Deficiency - Citrus

When the plant is not able to take in enough iron, the leaves become light green fading to pale yellow or even white. This happens gradually and[...]

Kikuyu Yellows

Kikuyu yellows is a disease that is favoured by wet soil conditions in hot weather, and is widespread in the north of New South Wales and in Queensland.

Fusarium Wilt - Carnation - Fusarium Oxysporum f.sp. dianthi

Carnation plants can be infected at any stage of their development. On older plants, this disease causes a b[...]

Fusarium Wilt - Cucurbits - Fuusarium Oxysporum

This common fungal disease is characterised by slow growth, wilting and death. If the stem is split open near the base of[...]

Fusarium Wilt - Tomato - Fusarium Oxysporum f.sp. lycopersici

This soil-inhabiting fungus enters the plant through the roots and invades the water-conducting tissues. Th[...]

Fusarium Yellow - Fusarium Oxysporum f.sp. gladioli

This fungus is a soil inhabitant and is introduced into the soil in diseased corms which often look healthy from the [...]

Gangrene - Potato - Phoma Foveata

This fungus is a soil inhabitant and it infects the tubers at harvest, particularly if they are wounded. The disease then develops duri[...]

Gnomonia Fruit Rot - Strawberry - Gnomonia Fructicola

This fungus can infect the flowers and fruit at any stage. It usually starts on or near the calyx. Flowers and youn[...]

Grey Mould - Grape - Botrytis Cinerea

This fungus can grow on both living and dead plants material. In cool humid conditions it produces a grey furry growth with masses [...]

Grey Mould - Lettuce - Botrytis Cinerea

This fungal disease is most likely to occur when the weather is cool and moist. A soft brown rot develops at ground level or on t[...]

Grey Mould - Botrytis Cinerea

This fungus produces sclerotia and may be present all year in pieces of dead plant material. A grey furry growth on the surface indicates s[...]

Downy Mildew - Grapes - Plasmopara viticola

This fungal disease is worst in warm humid conditions and common in mid-to-late spring. It first appears on the leaves in the[...]

Downy Mildew - Lettuce - Bremia Lactucae

Symptoms of this fungal disease appear mostly on the older leaves - that is, the ones nearest the soil. Pale green or yellow pat[...]

Downy Mildew - Onion - Peronospora destructor

This disease usually appears as pale oval spots on the older leaves. These spots increase in size until large yellowish are[...]

Downy Mildew - Pea - Peronospora Viciae

This fungus causes upper leaf surfaces to turn yellow. A thick grey-brown furry growth develops under the leaves in humid conditi[...]

Downy Mildew - Rhubarb - Peronospora Jaapiana

The symptoms of this disease are first seen on the upper leaf surfaces. The light-brown patches that develop are angular at[...]

Downy Mildew - Rose - Peronospora Sparsa

This fungus causes purplish-red to dark-brown spots on the leaves. They are not uniform in shape, but many are angular. In humid[...]

Downy Mildew - Stocks - Peronospora Parasitica

This fungus causes yellow patches on upper leaf surfaces. The whole leaf may become yellow and die. The affected leaves wi[...]

Downy Mildews

The group called 'downy mildews' comprise a number of different fungi which cause similar symptoms on different plants. In general, patches or spot[...]

Dry Patch

This is a water-repellent condition of the soil which occurs more frequently in older turf. The damage is usually worse on grass growing in sandy soil.

[...]

Fasciation

This abnormality most commonly involves the flattening of plant stems; instead of the stem being more or less round, it develops into a very much larger, flat[...]

Fire - Botrytis Tulipae

This fungus causes small brown spots on the leaves and flowers. The spots are most noticeable on light-coloured flowers. Spots spread to involve [...]

Fleck - Diplocarpon Mespili

On pear, the first symptoms, very small reddish dots on the top of the leaf, are seen in early spring. They grow and darken until they are al[...]

Flyspeck - Hibiscus - Microthyriella Hibisci

This fungal disease is more likely in humid areas or if the shrub is in a shady position in the garden.
The leaves gr[...]

Freckle - Fusicladium Carpophilum

This fungal disease is characterised by spots on the fruit and, less frequently, on the leaves. Spots are up 3mm in diameter and flat o[...]

Fusarium Bulb Rot - Lily - Fusarium Oxysporum

This fungus affects the bottom of the scales. These separate from the base of the bulb. Leaves that grow from infected bulb[...]

Fusarium Patch - Fusarium Nivale

This is a winter disease which attacks grasses in climates where night temperatures are low. When the weather is wet and temperature are[...]

Cymbidium Virus

There are a number of viruses that infect orchids. The symptoms are often difficult to distinguish from one another. The leaf may have a mottled appearan[...]

Cypress Canker - Seiridium spp.

This fungal disease is usually noticed only when branches die back. Closer inspection will reveal a brown powerdy substance in splits in [...]

Damping-Off - Lawns - Pythium spp.

When this disease occurs, the turf will look pale and in the worst areas plants will collapse in circles about 100mm across. In new pl[...]

Damping - Off

The term 'damping-off' means death of seeds or seedlings wheen they are attacked by certain soil-inhabiting fungi or bacteria. If the rotting occur[...]

Dieback - Camellia - Glomerella Cingulata

The fungus that causes this disease can only enter the plant through a wound. The 'wound', however, can be a natural op[...]

Dodder - Cuscuta spp.

This is a parasitic plant. When dodder seed germinates in the soil a small seedling is produced. It elongates very rapidly and as soon as the threa[...]

Dollar Spot

A number of different fungi cause the symptoms described as dollar spot. The spots of dead grass rarely exceed 50mm on low-cut lawns but may spread further o[...]

Downy Mildews - Crucifers - Peronospora parasitica

This fungus causes pale green to yellow spots on the upper leaf surface. A furry growth appears on the lower leaf surf[...]

Downy Mildews

The group called 'downy mildews' comprise a number of different fungi which cause similar symptoms on different plants. In general, patches or spot[...]

Downy Mildew - Cucurbits - Pseudoperonospora Cubensis

This fungus causes yellow spots about 15mm across on the upper surface of the leaves. The spots are angular on cucu[...]

Bacterial Black Spot - Mango
Xanthomonas Campestris pv. Mangiferaeindicae

The symptoms of this disease on the fruit are black oval raised spots with a gummy exuda[...]

Black Spot - Rose - Marssonina Rosae

This fungus causes black spots on the leaves. The spots, which may end up about 12 mm across, are more or less circular and have and[...]

Brown Patch - Rhizoctonia Spp.

This disease assumes many forms depending on the climate and time of year of attack. There are many strains of Rhizoctonia, and while dama[...]

Collar Rot - Citrus - Phytophthora Citrophthora

This disease is caused by a soil-inhabiting fungus which can only attack the tree under certain conditions. If the foilag[...]

Collar Rot - Rhizoctonia Solani

This soil-inhabiting fungus can cause root rots, stem rots, and crown or collar rots. It can attack many different types of plants and us[...]

Common Scab - Streptomyces Scabies

This disease - which is also referred to as 'potato scab' - begins as small brown dots on the tubers. As the tuber grows these[...]

Crown Gall - Agrobacterium spp.

This bacterial disease was previously thought to be caused by Agrobacterium Tumefaciens, which can be obtained from crown galls on any pl[...]

Myrtle rust in Queensland 24 May 2012

Hi,
The communiqué has been developed to provide regular updates on myrtle rust in Queensland.  If there is additional informatio[...]

Tomato Russet Mite - Aculops Lycopersici

This pest is extremely small and in the field can bee senn only with a magnifying glass or hand lens. Look for long yellowish bo[...]

White Curl Grubs - Order coleoptera: Family Scarabaeidae

These are the larvae of scarab or cockchafer beetles. They vary in size according to the age of the larvae and t[...]

Anthrancnose - Rose - Sphaceloma Rosarum

The spots caused by this fungus may be watersoaked at first, but by the time they are noticed they are probably black with a ver[...]

Bacterial Black Spot - Mango
Xanthomonas Campestris pv. Mangiferaeindicae

The symptoms of this disease on the fruit are black oval raised spots with a gummy exuda[...]

Spittlebugs - Order Hemiptera: Superfamily Cercopoidea

The nymphs of these sap-sucking insects protect themselves from drying out by producing wet, frothy material aroun[...]

Thrips - Order Thysanoptera

A number of thrips are serious plant pests. Some do not attack living plants at all but feed on decaying organic matter such as dead leaves, old wood or fungi[...]

Spined Citrus Bug - Biprorulus Bibax

Spined citrus bug is green with a prominent horn or spine on each of the front corners near the head. It is approximately 20mm long,[...]

Scales - Order Hemiptera

These insects such sap and can cause serious plant damage. They do not look like typical insects because most of them form a protective covering over themselves [...]

Orchid Beetle - Stethopachys Formosa

This insect is sometimes called the dendrobium beetle. the stout, cream-coloured larvae tunnel in the top of the pseudobulb and in new shoots. They m[...]

Pink Wax Scale - Ceroplastes Rubens

These scales are found on the midribs of leaves and on young twigs. They produce large quantities of honeydew, and plant health declines if the infest[...]

Psyllids - Order Hemiptera: Family Psyllidae

This family of about 80 species of small insects is related to the aphids, whiteflies, mealybugs and some other similar sapsuckers. Many spec[...]

Mole Crickets - Gryllotalpa spp.

These insects are brown and up to 45 mm long in the adult stage. They have wings and do fly to lights, but they spend most of their time underground wher[...]

Mites - Class Arachnida

Other animals in Class Arachnida include ticks, spiders and scorpions. The group of mites which cause plant damage include the eriophyid mites such as grapeleaf b[...]

Hi
The communiqué has been developed to provide regular updates on myrtle rust in Queensland.  If there is additional information that you would like included in the communiqu&[...]

Couchgrass Mite - Dolichotetranychus australianus

There are several different mites that cause the symptoms called witches' broom on couch grass. This is a shortening of internodes s[...]

Crusader Bug - Mictis Profana

These bugs are light brown and about 20mm long in the adult stage. They are refferred to as 'crusader' bugs because of the pale yellow cross on the [...]

Cutworms - Order Lepidoptera: Family Noctuiade

These caterpillars are the larvae of members of the moth group Noctuidae. Young larvae feed on the lower surfaces of leaves, and older larv[...]

Earwigs - Order Dermaptera

These insects are shades of brown or black, and all have the characteristic thick curved pincers or forceps at the end of their bodies. The adults of one speci[...]

Fruit Flies - Order Diptera: Family Tephritidae

These flies lay their eggs in small groups just beneath the skin of the fruit. When the larvae hatch, they often make their way to the cen[...]

Grass-Crown Mealybug - Antonina Graminis

This insect - which is also known as 'felted grass coccid' - is a common cause of lack of vigour in grasses and makes them look thin and [...]

African Black Beetle - Heteronychus Arator 

These shiny black beetles are about 12 mm long. They chew stems just below ground leve, leaving a frayed edge. Plants ma[...]

Hard Scales - Order Heiptera: Family Diaspididae

These scales are also referred to as armoured scales. Even small populations can cause serious damage, which includes yellow blotches on [...]

Hibiscus Flower Beetle - Aethina (Olliffura) concolor

This beetle is dull black, oval in shape and about 3mm long. It belongs to a family of beetles called Nitidulidae - as do the driedf[...]

Hydrangea Scale - Pulvinaria hydrangeae

The adult female scale is oval and about 3mm long. Towards the end of spring the females begin to produce ovisacs - structures of soft, white wax [...]

Lawn Armyworm - Spodoptera mauritia

Armyworms are the caterpillars of members of the moth family Noctuidae. They feed mostly on lawn and other grasses including weeds. They can cause ser[...]

Leafminers

There are a number of different insects whose larvae feed inside leaves. These can bee referred to as 'leafminers'. Adults may be beetles, wasps, sawflies, moths or fl[...]

Mealybugs - Order Hemiptera: Family Pseudococcidae

These insects are oval in outline and divided across into many sections. They usually have a fringe of short waxy threads around their [...]

Cabbage Moth - Plutella Xylostella

This pest causes more damage in hot, dry districts than in coastal areas, and its numbers are highest in summer. The larvae of this moth initially tunn[...]

Christmas Beetles - Anaoplognathus Spp.

The adult beetles are found from November to January and feed on eucalypt leaves. The produce at first the characteristic saw-tooth pattern of dam[...]

Citrus Bud Mite - Eriphyes Sheldoni

Thismite cannot be seen with the unaided eye. It may be found on the plant throughtout the year, but its numbers will decrease markedly if conditions [...]

Citrus Katydid - Caedicia Strenua

These insects are found in coastal districts. They are green, about 45mm long and resemble grasshoppers as adults, but when they are in the nymphal stag[...]

Citrus Leafminer - Phyllocnistis citrella

The adult of this pest is a tiny moth with a wingspan of about 5mm. It is silvery-white with yellowish markings, and there is a black spot on th[...]

Ants - Order Hymenoptera: Family Formicidae

Ants line in colonies. Most have underground nests but some species choose logs, wall cavities or the bases [...]

Aphids - Order Hemiptera: Family Aphididae

These Small insects, which are sometimes referred to as plant lice or blackfly or greenfly, are usually 1 to 2mm long. Differe[...]

Argentine Stem Weevil - Listronotus bonariensis

The adult of this pest is very difficult to detect, as it is very small (3mm long) and is a dark grey-brown. The weevils [...]

Azalea Lace Bug - Stephanitis Pyrioides

The adult bugs are about 4mm long and shiny black with lace-like mottled wings. MOst eggs are laid in the midrib or larger veins [...]

Azalea Leafminer - Caloptilia azaleella

The adult is a small moth, 6mm long with a wingspan of 11mm. Eggs are deposited singly near the midrib of the leaf. The caterpill[...]

Black Field Cricket - Teleogryllus Commodus

Both nymphs and adults of this pest chew leaves and may cause serious damage by removing the growing point. Plants may be che[...]

Black Scale - Saissetia Oleae

This soft scale - which is also known as brown olive scale - can be found on both twigs and foliage. It is approximately 3mm in diameter, w[...]

Blackheaded Pasture Cockchafer - Aphodius Tasmaniae

These beetles mate in summer, and eggs are laid in the soil usually in areas without a thick grass cover.

Young larvae feed o[...]

Hi
The communiqué has been developed to provide regular updates on myrtle rust in Queensland. If there is additional information that you would like included in the communiqué[...]

The communique has been developed to provide regular updates on myrtle rust in Queensland. If there is additional information that you would like included in the communiqué's[...]

This is the last Myrtle rust in Queensland communiqué for 2011. The Myrtle Rust Program would like to wish everyone a very Merry Christmas and a safe and happy New Year. We look forward to[...]