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Show Notes on Berry Insects of Utah! By GEORGE F. KNOWLTON and LEONARD L. HANSEN2 The following report is a preliminary annotated list of insects damaging, likely to injure currants, gooseberries, blackberries and dewberries in Utah. A Some notes are also given of strawberry and grape infesting species. few berry pests known to occur in adjoining states and likely to soon appear or in Utah are included. Grasshoppers of several species, including Shistocerca shoshone (Th.), Dissosteiro carolina (L.), Trimeritropus vinculata Scud., M elanoplus mexicanus Saus., M. fermur-rubrum (De G.), M. bivittatus (Say), M. packardi Scud., and Mermiria bivittata (Serv.), often seriously strip the foliage from rasp berry, dewberry, blackberry, and to a lesser extent damage the foliage of strawberry, currant and gooseberry bushes in Utah. The snowy tree cricket, Oecanthus niveus (De G.), inhabits raspberry, blackberry and loganberry bushes as well as orchards. Rows of tree cricket eggs, deposited in the pithy canes, are frequently observed in the spring when the bush fruits are being pruned. Besides damage to leaves, the nymphs which hatch from the over wintering eggs at times damage flowers and developing fruit. O. nigricornis quadrimaculatus Btm. also occurs with the above species. The flower thrips, Frankliniella tritici (Fitch), attacks the flowers of and many plants, including raspberries, dewberries, blackberries, strawberries, This pest is widely distributed in Utah, sometimes scars developing grapes. feeding upon many other crops as well as on native grasses. The onion thrips, Thrips tabaci Lind., occurs on raspberries, dewberries and srawberries. Leafhoppers frequently are abundant throughout the year in northern Utah dewberry patches causing spotting of the leaves. The blue sharpshooter, Cicadella circellata (Baker). occurs in many parts of the west. and possibly is one of the species present upon raspberry, blackberry and grape in Utah. Dikraneura cruentata Gill. has been observed to conspicuously spot dewberry The rose leafhopper, foliage at Granite, Pleasant Grove and Providence. Empoa rosae (L.), is also found on raspberry, blackberry and grape, as well as on apple and rose. Erythroneura elegantula Osb. was found on strawberry plants at Centerville. E. variabilis Bea., E. elegans Mc A., E. ziczac Walsh, and E. coloradensis (Gill.) have been found damaging grapes in various Utah Some of these species also occur on strawberry, raspberry, goose localities. currant bushes. The currant psyllid, Arytaina ribesiae (Cr.), com and berry monly infests cultivated and wild native currant bushes throughout Utah. The knotweed psyllid, Aphalara calthae (L.), is very common in Utah, occurring on gooseberry and occasionally on tomato. Aphids- of several species attack of these some in having to do with plant dis presumably Utah, berry plants The cottony maple scale, Pulvinaria vitis (L.), may at ease transmission. The brown apricot scale, times attack blackberry, currant and gooseberry. Lecanium corni (Bouche), sometimes infests currant, gooseberry and black berry though seldom being a pest of these crops in Utah. The oyster shell scale, Lepidosaphes ulmi (L.), is common in Utah upon a number of plants. Contribution Station. 2 3 from the Department of Entomology, Associate entomologist and research assistant, Authorized for publication. See repor ts by Knowlton and Allen for species 127 Utah Agricultural Experiment respectively. occurring in Utah. |
