92 NEBRASKA STATE HORTICULTURAL SOCIETY 



parts of southern Nebraska to gooseberry and currant bushes by burrorw- 

 ing in the stem. A species of twig mite, working in gooseberry, came to 

 our notice from Box Butte county. The snowy tree cricket (Oecanthus 

 niTeiis) was found to have extensively injured the raspberries, black- 

 berries and grapes in several frnit farms in the vicinity of Florence in 

 1908. Many of the canes of blackberry and raspberry were dead and 

 filled witb the tree criket eggs foir nearly their entire length, some stems 

 actually containing hundreds of tbese eggs. One fruit grower estimated 

 his loss because of this insect at over $300.00 during the preceding year. 

 During middle May of 1908 the mulberry trees in certain localities near 

 Lincoln were more or less injured by the work of the larva of a 

 Cerambycid beetle (Dorcliaschema .alternatnm) which in some trees was 

 so abundant as to cause their death. More will be said of this borer 

 on a succeeding page. 



Among the enemies of coniferous trees there are several which came 

 to our notice during 1908 and 1909. The pine-leaf scale (Chionaspis 

 pinifoliae) was reported as seriously infesting both pine and spruce 

 during both years. In June 1909 the pine tree sicale was repoirted from 

 Geneva as injuring Black Hill spruce in that town. In July 1909 the 

 writer investigated a rather seriuos outbreak of one of the pine tip moths, 

 (ETetria frustraiia) among the jack pines and Scotch pines in the Dismal 

 River Forest Reserve near Halsey. The outbreak is described on afollowing 

 page in greater detail. A species of bark-beetle (Hylesinus opacnlus) 

 was reported from Furnas county where it was proving serious as an 

 enemy of cedars by causing the twigs to break off where the insects 

 burrowed under the bark at their bases. This injury and the beetle caus- 

 ing it are illustrated on Plate 8. A leaf miner was also reported as affect- 

 ing pines in Wayne county. 



The white-marked tussock moth (Hemeroeampa leucostigma) which 

 was so abundant during 1907 and which was very common also during 

 the earlier part of 1908, during this latter year was brought under com- 

 plete control by its parasites so that during latter 1908 and 1909 it was 

 not injurious; in fact in many locatities ^was net even common. There 

 was, however, a little trouble with this infeect upon fruit and shade trees 

 in the vicinity of Omaha during 1909. An account of the parasitism of 

 this species is given elsewhere in this report. The fall web-worm 

 (Hyphautria cunea) continued its injuries upon the shade trees unabated 

 during the biennium here discussed. The trees most injured seem to be 

 the elm, poplar, cottonwood and boxelder. Circular No. 5 of the office 

 of State Entomologist contains an account of this common pest. Its 

 work is illustrated on Plate 9. 



Two large caterpillars proved injurious to plum foliage in various 

 localities in this state during 1908 but neither to a serious extent. 

 These were the larvae of the cecropia moth (Sainia oecropia) and the 

 plum sphinx (Calasyinbolus exoaecatus). The former of these was 

 reported from several localities; the latter from Nance county only. The 

 walnut caterpillar (Datana angnsii) was quite injurious in the city of 



