96 



A MANUAL OF DANGEROUS INSECTS. 



Coccidse — Continued. 

 Unarmorcd— 



>\iiGossr/pariu spuria Modeer; Europe. 

 Gueriniella serratulx Fabrieius; Italy. 

 Lccanium coryli Linnaeus; Europe; Ulmus campcatris, U. montana. 



COLEOPTERA. 

 Bostrychldae. 



Sinoiylon perforans Schr.; Europe; bores in branches. 

 Xylonites relusiis Olivier; Europe; bores in branches and trunks. 



Buprestidse. 



Lampra decipiens Mannerhcim and L. rutilans Fabricius; Europe; bore in the bark, bast and sap- 

 wood. 



Scarabaeidae. 



Melolontha hippocastani Fabricius and M. mclolontha Linnaeus; Europe; larvae injure roots of seedlings. 



Cerambycldae. 



Acolesthcs sarta SoKsky; India; bores in tnmks. 

 Oberca linearis Linnaeus; Europe; bores in pith of nursery 

 stock of cork elm. 



Curciilionidse. 



Magdalis aterrima Linnaeus; Europe; makes galleries imder 

 the bark and in injured branches. 



Orchestcs alni Linnaeus; Europe; mines the leaves of Ulmus 

 campestris. 



Orchestcs ferrugineus Marsham and O. rufus Olivier; Europe; 

 mine the leaves. 



Scolytidae. 



Pteleohius kraatzi EichhofE; Russia; galleries in bark. 

 Ptcleobius viltatus Fabricius; Germany, Russia; galleries in 



bark. 

 Scolytochelus ensifer Eichhoff; Russia; galleries in bark of 



branches. 

 Scolytoclielus kirschi Skal.; Russia; galleries in bark of smooth 



bark elms. 

 Scolytus Ixvis Chapuis and S. pygmxus Fabricius; Europe ; 

 galleries in bark of tops and branches. 

 Scolytus mali Bechst.; Europe. 



Scolytus multistriatus Marsham; Europe (see text fig. 53). 

 Scolytus scolytus Fabricius; Europe; attacks all parts of trunk and branches. 

 Xyleborus dryographus Ratzeburg and X. monographus Fabricius; Europe; galleries in wood. 



LEPIDOPTERA. 

 Cossidae. 



Cossus cossus Linufeus; goat moth; Europe; bores in wood. (Sec "Willow.) 

 *Zeuzera pyrina Linnaeus; Europe; bores in wood. (See Horse chestnut.) 



Notodontidse. 



Phalcra bucephala Linnaeus; Europe. (See Forests.) 

 Noctuidae. 



Xylina soda Rott.; Europe. (See Plum.) 



Geometridse. 



BoarmiacrepusculariaTlnbTieT; Europe, Asia. (See Cinchona.) 

 Hiberniad foliar id \Ann;ens: Europe; defoliator. 

 LureatiadihUata'Qovc'Sh.; Europe; defoliator. 



LITERATURE. 



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



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



Hess, R. Der Forstschutz, 1898, 1900. 



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



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



LiNDiNGER, L. Die ychildlause (Coccidae), 1912. 



Fig. 53— Elm barkbeetle {Scolytus 

 muUistriatus): Adult. (Niisslin.) 



