mites

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Published on January 1, 2008

Author: FunnyGuy

Source: authorstream.com

Mites: Identification and management:  Dr. Vera Krischik, Department of Entomology University of Minnesota www.entomology.umn.edu/cues Mites: Identification and management Mites:  Mites Egg, larva, protonymph, deutonymph, adult Four pairs of legs; three pairs on larva 1 body segment Chelicerae, fangs like spiders Suck cells Cause chlorosis; yellowing of foliage Transmit disease Diagnostics: chlorosis, webbing, rusetting, galls Mites:  Mites Female: round abdomen Male: pointed abdomen Larva: 3 pairs of legs Mite life cycles:  Mite life cycles Warm/cool season mites:  Warm/cool season mites Warm season twospotted spider mite European red mite bulb mite gall, rust mite cyclamen mite Cool season spruce spider mite clover mite Mites in the greenhouse:  Mites in the greenhouse Family Tetranychidae: twospotted spider mite Lewis mite Family Tarsonemidae: cyclamen mite broad mite Family Acaridae: bulb mite Family Eriophyidae: gall, rust mite Mites in the landscape:  Mites in the landscape Family Eriophyidae: gall or vagrant mites Family Tetranychidae: spider mites Family Tarsonemidae: cyclamen/broad Family Phytoseiidae: predatory mites Family Acaridae: bulb mite Family Oribatidae: soil mites Mites in the landscape:  Mites in the landscape Family Eriophyidae: gall or vagrant mites ash flower gall mite elm eriophyid mite hemlock rust mite maple spindlegall mite maple velvet erineum gall mite Mites in the landscape:  Mites in the landscape Family Tetranychidae: spruce spider mite twospotted spider mite European red mite honeylocust spider mite clover mite Predatory mites:  Predatory mites Family Phytoseiidae: Phytoseiulus persimilis Neoseiulus californium Hypoaspis miles Amblyseius cucumbers (= Neoseiulus cucumbers) Miticides: Greenhouse:  Pesticide (Trade Name) abamectin (Avid) bifenthrin (Talstar) chlorfenapyr (Pylon) endosulfan (Thiodan) lambda-cyhalothrin (Scimitar GC) pyridaben (Sanmite) Miticides: Greenhouse Miticides: Landscape:  Pesticide (Trade Name) abamectin (Avid) bifenthrin (Talstar) hexythiaxoz (Hexygon) lambda-cyhalothrin (Scimitar GC) pyridaben (Sanmite) Miticides: Landscape Predators: Minute Pirate Bugs Orius insidiosus:  Family: Anthocoridae (Hemiptera) Predators: Minute Pirate Bugs Orius insidiosus Predators: Minute Pirate Bugs Orius insidiosus:  Adult Minute Pirate Bugs live for 3 - 4 weeks and lay their eggs in plant tissue. The nymphs emerge in 4 - 5 days and become adults in 7 - 10 days. Predators: Minute Pirate Bugs Orius insidiosus Predatory mites: Phytoseiulus persimilis:  Family Phytoseiidae Predatory mites Predatory mites: Phytoseiulus persimilis Predatory mites: Phytoseiulus persimilis:  These predatory mites consume 5-10 pest adults or up to 20 pest eggs/day. When released during a low infestation, spider mites can be controlled within 2-3 weeks. P. persimilis need a relative humidity greater than 60% in order to survive, especially in the egg stage. Once the adults' food supply dwindles, P. persimilis die. spider mites Predatory mites: Phytoseiulus persimilis Predatory mites: Neoseiulus californium:  Family Phytoseiidae Predatory mites Predatory mites: Neoseiulus californium Predatory mites: Neoseiulus californium:  These predatory mites consume their prey at a leisurely pace of one adult or a few eggs per day; can survive longer under starvation conditions; and need a minimum of 60% humidity and temperatures 60-85 degrees F. spider mites Predatory mites: Neoseiulus californium Predatory mites: Amblyseius cucumbers:  Family Phytoseiidae Predatory mites Predatory mites: Amblyseius cucumbers Predatory mites: Amblyseius cucumbers:  Release cucumbers when thrips populations are low (monitor thrips populations with sticky blue traps), and allow several weeks for the predators to be effective. Ideal conditions are 66-80 degrees F and a relative humidity of 65-72 %. These predators are most effective from March to November. Use in conjunction with thrips pupae predator Hypoaspis for improved control. Thrips, cyclamen mite Predatory mites: Amblyseius cucumbers Predatory mites: Hypoaspis miles:  Family Phytoseiidae Predatory mites Predatory mites: Hypoaspis miles Predatory mites: Hypoaspis miles:  The female Hypoaspis mites lay their eggs in the soil, which hatch in 1-2 days, and the nymphs and adults feed on the soil-dwelling pests. Each Hypoaspis mite will consume 5-20 prey or eggs per day. They survive by feeding on algae and/ or plant debris when insects aren't available. Their entire life cycle is 7-11 days. Predatory mites: Hypoaspis miles Bulb mite Ash flower gall mite:  Family Eriophyidae Erineum gall or vagrant mites Male flowers Persistent through winter Ash flower gall mite Ash flower gall mite:  Ash flower gall mite Host: ash Life history: female stimulates galls No. gen: several Overwintering: females under bark Monitoring: galls on male flowers Risk: low BC: low Biorational pesticides: abamectin, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, carbaryl, deltamethrin, dicofol, fenbutatin oxide, lambda-cyhalothrin Clover mite:  Family Tetranychidae Spider mites Turf Long front legs; webbing in fall Clover mite Clover mite:  Clover mite Host: grass Life history: no males No. gen: two or more Overwintering: any stage; bark, walls Monitoring: brown grass Risk: low BC: low Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben Cyclamen mite:  Family Tarsonemidae Cyclamen mite Cyclamen mite Broad mite:  Family Tarsonemidae Broad mite Broad mite Family Tarsonemidae Cyclamen/ broad mite:  cyclamen mite 90Rh 60F broad mite 90RH 80F Family Tarsonemidae Cyclamen/ broad mite Family Tarsonemidae Cyclamen/broad mite:  Cyclamen mite African violets, ivy, snapdragon, chrysanthemum, cyclamen, delphinium, larkspur, geranium, fuchsia, begonia, petunia, daisy, and azalea. Broad mite African violet, ageratum, azalea, begonia, cyclamen, dahlia, gerbera, gloxinia, ivy, jasmine, impatiens, lantana, marigold, peperomia, snapdragon, verbena, and zinnia. Family Tarsonemidae Cyclamen/broad mite Cyclamen mite:  Host: GH to landscape, delphiniums Life history: mites hide in buds/ shoots No. gen: several Overwintering: continuous generations Monitoring: distortion Risk: high Biorational pesticides: abamectin, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, dicofol, fenbutatin oxide, lambda-cyhalothrin, pyridaben Cyclamen mite Broad mite:  Host: GH, house plants Life history: mites hide in buds/ shoots No. gen: several Overwintering: continuous, males carry females to new leaves Monitoring: distortion Risk: high Biorational pesticides: abamectin, neem oil, horticultural oil, insecticidal soap Conventional pesticides: endosulfan, dicofol, pyridaben Broad mite Elm eriophyid mite:  Family Eriophyidae Erineum gall or vagrant mites Gall persistent Elm eriophyid mite Elm eriophyid mite:  Elm eriophyid mite Host: elm Life history: female leaf hairs to expand No. gen: several Overwintering: females under bark Monitoring: erineum galls/ felt-like patches on leaves Risk: low BC: low Biorational pesticides: abamectin, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, carbaryl fenbutatin oxide, lambda-cyhalothrin Eriophyid mite:  Family Eriophyidae Erineum gall or vagrant mites Gall persistent Eriophyid mite Eriophyid mite:  Family Eriophyidae Erineum gall or vagrant mites Gall persistent Eriophyid mite Eriophyid mite:  Eriophyid mite Host: many deciduous trees Life history: female leaf hairs to expand No. gen: several Overwintering: females under bark Monitoring: erineum galls/ felt-like patches on leaves Risk: low BC: low Biorational pesticides: abamectin, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, carbaryl, dicofol, fenbutatin oxide, lambda-cyhalothrin Honeylocust spider mite:  Family Tetranychidae Spider mites Honeylocust spider mite Honeylocust spider mite:  Family Tetranychidae Spider mites Honeylocust spider mite Honeylocust spider mite:  Honeylocust spider mite Host: honeylocust Life history: distorts leaflet No. gen: several Overwintering: females under bark Monitoring: wilting/ drying compound leaves Risk: low BC: low Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben European red mite:  Family Tetranychidae Spider mites European red mite European red mite:  European red mite Host: flowering fruits Life history: generation 2 weeks No. gen: several Overwintering: eggs on bark Monitoring: stippling damage Risk: low BC: high Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben Maple velvet erineum gall mite:  Family Eriophyidae Erineum gall or vagrant mites Maple velvet erineum gall mite Maple velvet erineum gall mite:  Maple velvet erineum gall mite Host: many deciduous trees Life history: female leaf hairs to expand No. gen: several Overwintering: females under bark Monitoring: erineum galls/ felt-like patches on leaves Risk: low BC: low Biorational pesticides: none Conventional pesticides: carbaryl Spruce Spider mite:  Family Tetranychidae Spider mites Spruce Spider mite Spruce Spider mite:  Family Tetranychidae Spider mites Spruce Spider mite Spruce spider mite:  Spruce spider mite Host: arborvitae, spruce, juniper, yew Life history: damage in May No. gen: several Overwintering: reddish eggs on bark Monitoring: stippling damage Risk: medium BC: high Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben Twospotted spider mite:  Family Tetranychidae Spider mite Twospotted spider mite Twospotted spider mite:  Family Tetranychidae Spider mites Twospotted spider mite Twospotted spider mite:  Twospotted spider mite Host: many trees, perennials, annuals Life history: damage in June No. gen: several Overwintering: adults in leaf litter, grass Monitoring: stippling damage, webbing Risk: medium BC: high Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, horticultural oil, insecticidal soap Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben Oribatid mite:  Family Oribatidae Oribatid mites Oribatid mite Oribatid mite Oribatid mite:  Oribatid mite Host: soil Life history: decomposition No. gen: several Overwintering: adults in soil Monitoring: none Risk: none Pesticides: control not necessary

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