INSECTS OF WILLOW AND YEW. 223 



LEPIDOPTERA. 

 Cossidse. 



^Zeuzera pijrim Linnaeus; Europe; bores in wood of basket willow. (See Horse-chestnut.) 

 Cyinbidae. 



Earias chlorana Hubner; Europe; attacks foliage, buds, and shoots of long-leaf willows. 

 Geometridse. 



Anisopteryx xsculariaSciuSenmlleT; Europe; feeds on foliage. 



Larentia dilutata Borckh.; Europe; defoliator. 



Lasiocanipidae. 



Eriogaster lanestris Linnaeus and Malacosoma neustria Linnteus; Europe; defoliators 

 Oastropacha quercifolia Linnaeus; Europe. (See Fruit.) 



Lymantriidae. 



^Euproctis chrysorrhcea Linnaeus, ^Lymantria monacha Linnaeus, ^PorthetTia dispar Linnaeus, ^Orgyia 

 antiqua Linnaeus, Porthesia similis Fuessly, and Stilpnotia salicis Linnteus; Europe; defoliators. (Sea 

 Forest defoliators.) 



Sesiidse. 



Sesia/ormicaeformis Esp.; Europe; bores in stems and shoots. 



HYMENOPTERA. 

 Cimbicidse. 



Cimbei variabilis Klug; Europe; sawfly, attacks leaves. 



Pseudoclavellaria amerinx Linnna?us; a sawfly; Europe; defoliator, 



Tnchiosoma lucorum Linnaeus; Europe; defoliator. 



Tenthredinidse. 



Euura ater Jurine, Pontania salicis Christ, and Pleronidea salicis Linnaus; Europe; sawflies 



DIPTERA. 

 Itonididae (Cecldomyldae). 



Cecidomyia saliciperda Dufour; Europe; breeds in branches of Salix triandra, S. alba, S. fragilis S. 



capita, and 5. purpurea. 

 Cecidomyia salicis Schrank; Europe; breeds in shoots. 



LITERATURE. 



SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3. 

 NOssuN, O. Leitfaden der Forstinsektenkunde, 2d ed., 1913. 

 Hess, R. Der Forstschutz, 1900, vol. 2. 

 Stebbing, E. p. Indian Forest Insects, Coleoptera, 1914. 

 Bargagu, p. Rassegna Biologica Rincofori Europei, 1883-87. 

 LiNDiNGER, B. Die Schildlause (Coccidae), 1912. 



YEW. 



( Taxus spp. Family Taxacese.) 



Ornamental evergreen trees or shrubs distributed throughout the northern hemi- 

 sphere. The wood is valued for cabinetmaking. In studying the pests of this genus 

 reference should also be made to Conifers. 



Erlophyes psllaspis Nalepa. 



(Yew Gall Mite. Eriophyidse. Acarina.) 

 Host: Yew. 



Injury: Forms gall-like swellings of the buds. Serious injury to hedges. 

 Description and biology: Four-legged blister mite, which causes galls by its feeding. 

 Especially liable to introduction on nursery stock. 

 Distribution: England. 



GiLLANDERs, A. T. Forest Entomology, Edinburgh and London, 1908, p. 26, fig. 25. 



