wingless females host:www.canr.msu.edu

Listing 1 - 8 from 8 for wingless females

Apple Aphid
... wide. Nymph: The nymphs are all viviparous wingless females. The five instars include the last stage, which is the stem mother. Adults: The wingless viviparous females are pear-shaped and light green, though in ... Foliar senescence and predator activity are important factors in lowering aphid populations. Life History The wingless females lay eggs mostly on the bark or on the buds in the fall. The ...
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Rosy Apple Aphid
... of this generation develop wings and migrate to the narrow-leaved plantain. In some seasons, wingless females of the third generation produce a fourth generation on apple. In recent years, it has ... 40 days to reach maturity and produce young. The majority of the second generation is wingless females. The average total production of each individual in the second generation about 119. The habits ...
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Woolly Apple Aphid
... The females lay eggs in cracks or crevices of elm tree bark in the fall. The eggs hatch in the spring into wingless, parthenogenetic ... to elm, where they give birth to males and females. Both males and females are wingless, have no mouthparts and do not grown after ... , water sprouts and callus tissue in wounds, cankers and scars. Wingless females in the aerial colonies may give birth to nymphs at any ...
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Black Cherry Aphid
... -bodied and black, and measures about 3 mm long. Adult aphids may be winged or wingless. Wingless forms occur during most of the season. Host Range The black cherry aphid has shown ... from the overwintering eggs rapidly establish colonies on the new growth by giving birth to wingless females. The process is called parthenogenetic ovoviviparous reproduction. Within a few weeks, the tips of the ...
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Apple Grain Aphid
... this generation acquires wings and migrates to the summer host plants. A small proportion are wingless viviparous females that continue to produce young on the apple. Normally, a few third-generation ... females return to the apple tree and give birth to wingless oviparous females. The male aphids develop on grains or grasses and later fly to apples, where they find and fertilize the females ...
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Green Peach Aphid
... than peach. As cold weather approaches in the fall, females fly to peaches and give birth to female nymphs. These females mate with males as they return from summer host ... appear, the overwintering females establish themselves as stem mothers. This spring generation triggers two or three more generations or females on peach; the females give birth parthenogenetically to wingless young. By June, ...
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Pear Psylla
... the bark, and a long, threadlike process projects from the smaller end. Nymph: Small, yellow, wingless nymphs are about 3 mm long when newly hatched. There are five immature stages. The ... generation of adults are smaller and lighter colored than those of the first generation. The females of later generations do not lay eggs on bark but deposit them along the midrib ...
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Potato Leaf Hopper Fact Sheet  -- Bruce MacKellar <MSU Extension >
... . Nymphs: The immature stages (nymphs) resemble the adults, but are wingless. When first hatched the nymphs are approximately 1/32-inch ... . 2) Adult potato leafhoppers readily fly or run sideways when disturbed, Females deposit one to six eggs daily on plant stems, leaf petioles ... leafhoppers will leave the fields when it is cut. The wingless nymphs will remain behind, but without foliage to feed on ...
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