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Mites: Identification and management.


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Dr. Vera Krischik, Department of Entomology University of Minnesota www.entomology.umn.edu/cues. Mites: Identification and management. Mites. Egg, larva, protonymph, deutonymph, adult Four pairs of legs; three pairs on larva 1 body segment Chelicerae, fangs like spiders Suck cells
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Dr. Vera Krischik, Department of Entomology University of Minnesota www.entomology.umn.edu/signals Mites: Identification and administration

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Mites Egg, hatchling, protonymph, deutonymph, grown-up Four sets of legs; three sets on hatchling 1 body portion Chelicerae, teeth like creepy crawlies Suck cells Cause chlorosis; yellowing of foliage Transmit ailment Diagnostics: chlorosis, webbing, rusetting, nerves

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Mites Female: round stomach area Male: pointed mid-region Larva: 3 sets of legs

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Mite life cycles

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Warm/cool season parasites Warm season twospotted insect vermin European red bug globule bug nerve, rust bug cyclamen bug Cool season spruce arachnid bug clover bug

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Mites in the nursery Family Tetranychidae: twospotted bug Lewis bug Family Tarsonemidae: cyclamen bug expansive bug Family Acaridae: knob bug Family Eriophyidae: nerve, rust bug

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Mites in the scene Family Eriophyidae: nerve or vagrant bugs Family Tetranychidae: bug bugs Family Tarsonemidae: cyclamen/wide Family Phytoseiidae: ruthless bugs Family Acaridae: globule bug Family Oribatidae: soil bugs

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Mites in the scene Family Eriophyidae: nerve or vagrant bugs slag blossom nerve bug elm eriophyid bug hemlock rust bug maple spindlegall bug maple velvet erineum nerve bug

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Mites in the scene Family Tetranychidae: spruce bug twospotted bug European red bug honeylocust bug clover bug

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Predatory bugs Family Phytoseiidae: Phytoseiulus persimilis Neoseiulus californium Hypoaspis miles Amblyseius cucumbers (= Neoseiulus cucumbers )

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Pesticide (Trade Name) abamectin (Avid) bifenthrin (Talstar) chlorfenapyr (Pylon) endosulfan (Thiodan) lambda-cyhalothrin (Scimitar GC) pyridaben (Sanmite) Miticides: Greenhouse

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Pesticide (Trade Name) abamectin (Avid) bifenthrin (Talstar) hexythiaxoz (Hexygon) lambda-cyhalothrin (Scimitar GC) pyridaben (Sanmite) Miticides: Landscape

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Family: Anthocoridae (Hemiptera) Predators: Minute Pirate Bugs Orius insidiosus

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Adult Minute Pirate Bugs live for 3 - 4 weeks and lay their eggs in plant tissue. The fairies develop in 4 - 5 days and get to be grown-ups in 7 - 10 days. Predators: Minute Pirate Bugs Orius insidiosus

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Family Phytoseiidae Predatory parasites Predatory vermin: Phytoseiulus persimilis

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These ruthless bugs devour 5-10 bother grown-ups or up to 20 bug eggs/day. At the point when discharged amid a low infestation, insect vermin can be controlled inside 2-3 weeks. P. persimilis need a relative stickiness more noteworthy than 60% with a specific end goal to survive, particularly in the egg stage. Once the grown-ups' nourishment supply diminishes, P. persimilis kick the bucket. Ruthless vermin: Phytoseiulus persimilis arachnid bugs

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Family Phytoseiidae Predatory bugs Predatory bugs: Neoseiulus californium

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These savage bugs expend their prey at a lackadaisical pace of one grown-up or a couple eggs for every day; can survive longer under starvation conditions; and need at least 60% dampness and temperatures 60-85 degrees F. Savage vermin: Neoseiulus californium insect bugs

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Family Phytoseiidae Predatory bugs Predatory bugs: Amblyseius cucumbers

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Release cucumbers when thrips populaces are low (screen thrips populaces with sticky blue traps), and permit a few weeks for the predators to be powerful. Perfect conditions are 66-80 degrees F and a relative mugginess of 65-72 %. These predators are best from March to November. Use in conjunction with thrips pupae predator Hypoaspis for enhanced control. Savage parasites: Amblyseius cucumbers Thrips, cyclamen bug

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Family Phytoseiidae Predatory vermin Predatory bugs: Hypoaspis miles

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The female Hypoaspis bugs lay their eggs in the dirt, which hatch in 1-2 days, and the fairies and grown-ups feast upon the dirt staying irritations. Each Hypoaspis bug will expend 5-20 prey or eggs for every day. They get by encouraging on green growth and/or plant flotsam and jetsam when bugs aren't accessible. Their whole life cycle is 7-11 days. Ruthless bugs: Hypoaspis miles Bulb vermin

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Family Eriophyidae Erineum nerve or vagrant parasites Male blossoms Persistent through winter Ash bloom nerve bug

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Ash blossom nerve bug Host: fiery remains Life history: female fortifies rankles No. gen: a few Overwintering: females under bark Monitoring: nerves on male blossoms Risk: low BC: low Biorational pesticides: abamectin, plant oil, insecticidal cleanser Conventional pesticides: bifenthrin, carbaryl, deltamethrin, dicofol, fenbutatin oxide, lambda-cyhalothrin

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Family Tetranychidae Spider vermin Turf Long front legs; webbing in fall Clover parasite

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Clover bug Host: grass Life history: no guys No. gen: two or all the more Overwintering: any stage; bark, dividers Monitoring: chestnut grass Risk: low BC: low Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, agricultural oil, insecticidal cleanser Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben

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Family Tarsonemidae Cyclamen parasite Cyclamen bug

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Family Tarsonemidae Broad vermin Broad bug

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Family Tarsonemidae Cyclamen/wide bug cyclamen bug 90Rh 60F wide bug 90RH 80F

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Cyclamen bug African violets, ivy, snapdragon, chrysanthemum, cyclamen, delphinium, larkspur, geranium, fuchsia, begonia, petunia, daisy, and azalea. Family Tarsonemidae Cyclamen/wide vermin Broad parasite African violet, ageratum, azalea, begonia, cyclamen, dahlia, gerbera, gloxinia, ivy, jasmine, impatiens, lantana, marigold, peperomia, snapdragon, verbena, and zinnia.

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Cyclamen parasite Host: GH to scene, delphiniums Life history: vermin stow away in buds/shoots No. gen: a few Overwintering: nonstop eras Monitoring: bending Risk: high Biorational pesticides: abamectin, plant oil, insecticidal cleanser Conventional pesticides: bifenthrin, dicofol, fenbutatin oxide, lambda-cyhalothrin, pyridaben

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Broad parasite Host: GH, house plants Life history: vermin cover up in buds/shoots No. gen: a few Overwintering: ceaseless, guys convey females to new leaves Monitoring: bending Risk: high Biorational pesticides: abamectin, neem oil, agricultural oil, insecticidal cleanser Conventional pesticides: endosulfan, dicofol, pyridaben

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Family Eriophyidae Erineum nerve or vagrant bugs Gall steady Elm eriophyid bug

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Elm eriophyid vermin Host: elm Life history: female leaf hairs to extend No. gen: a few Overwintering: females under bark Monitoring: erineum nerves/felt-like patches on leaves Risk: low BC: low Biorational pesticides: abamectin, agricultural oil, insecticidal cleanser Conventional pesticides: bifenthrin, carbaryl fenbutatin oxide, lambda-cyhalothrin

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Family Eriophyidae Erineum nerve or vagrant vermin Gall persevering Eriophyid bug

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Family Eriophyidae Erineum nerve or vagrant parasites Gall tenacious Eriophyid bug

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Eriophyid bug Host: numerous deciduous trees Life history: female leaf hairs to extend No. gen: a few Overwintering: females under bark Monitoring: erineum nerves/felt-like patches on leaves Risk: low BC: low Biorational pesticides: abamectin, green oil, insecticidal cleanser Conventional pesticides: bifenthrin, carbaryl, dicofol, fenbutatin oxide, lambda-cyhalothrin

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Family Tetranychidae Spider bugs Honeylocust creepy crawly bug

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Family Tetranychidae Spider parasites Honeylocust arachnid bug

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Honeylocust bug Host: honeylocust Life history: contorts handout No. gen: a few Overwintering: females under bark Monitoring: shrinking/drying compound leaves Risk: low BC: low Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, plant oil, insecticidal cleanser Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben

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Family Tetranychidae Spider bugs European red vermin

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European red bug Host: blossoming organic products Life history: era 2 weeks No. gen: a few Overwintering: eggs on bark Monitoring: stippling harm Risk: low BC: high Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, green oil, insecticidal cleanser Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben

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Family Eriophyidae Erineum nerve or vagrant vermin Maple velvet erineum nerve bug

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Maple velvet erineum nerve parasite Host: numerous deciduous trees Life history: female leaf hairs to extend No. gen: a few Overwintering: females under bark Monitoring: erineum nerves/felt-like patches on leaves Risk: low BC: low Biorational pesticides: none Conventional pesticides: carbaryl

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Family Tetranychidae Spider vermin Spruce Spider bug

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Family Tetranychidae Spider parasites Spruce Spider bug

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Spruce arachnid bug Host: arborvitae, spruce, juniper, yew Life history: harm in May No. gen: a few Overwintering: ruddy eggs on bark Monitoring: stippling harm Risk: medium BC: high Biorational pesticides: abamectin, bifenazate, clofentazine, hexythiazox, green oil, insecticidal cleanser Conventional pesticides: bifenthrin, chlorpyrifos (nursery), deltamethrin, dicofol, fenpropathrin, fenbutatin oxide, lambda-cyhalothrin, pyridaben

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Family Tetranychidae Spider bug Twospotted bug parasite

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Family Tetranychidae Spider bugs Twospotted bug vermin

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Twospotted arachnid bug Host: numerous trees, perennials, annuals Life history: harm in June No. gen: a few