INSECTS ETC., INJURIOUS TO VARIOUS CROPS I389 



throughout the good season until the first colds compel them to seek 

 shelter. 



Among the natural enemies of Galeriicella mention must be made of 

 the coleopteron Lehia ornata Say, which attacks the adults, tears off the 

 elytra and feeds on the soft tissues. It also kills the pupae and feeds on 

 them, only leaving the pupal skin intact. 



For control there are advised : i) applications of 40 % solutions of ni- 

 cotine sulphate, in the proportion of one part to 600 of water ; the addition 

 of soap (i part per 200 of mixture) increases the efficacy ; 2) applications 

 of sweetened lead arsenate, especially for cherry- trees, according to the fol- 

 lowing formula : 1.3 lb. lead arsenate, 0.33 galls of treacle and 11 galls of 

 water. 



1053 - Terrapin Scale (Eu/ecaniam nigrofasciatum). Injurious to the Peach 



Tree in America.— Simaxton F. I,., in United states Department of A '^ri cult it re, Bureau 

 of Entomology, BuUetin'So. 351, pp. 1-96, Fig. 20. Washington, D. C, 1916. 



Eitlecanium nigrofasciatum Pergande causes more and more serious 

 injury to peach trees in the eastern States and especially in Pennsylvania 

 and Maryland. From here it has spread to the north where it attacks other 

 plants, among which Acer pseudoplatanus ly. and A. sacchariniim L. are 

 its favourite hosts. Towards the south-west, it has already reached the 

 Gulf States and has attacked Phoradendron spp., on which it thrives well. 

 The range of this Eulecanium tends to increase in such measure that it 

 soon will probably be spread in ail the regions where the peach, the plum, 

 Acer spp. (maple) and Phoradendron spp. occur in abundance. 



Host plants are : the sycamore maple [Acer pseudoplatanus L.) ; sil- 

 ver maple [A. saccharimim L,.) ; sugar maple or rock maple [A. saccharum 

 L.) ; Amygdahis Persic a L. and its varieties; spice-bush {Benzoin aestivale 

 {l^.) Xees) ; Betiila spp. ; saffron plum (Boumelia augustijolia Nutt.) ; Ca- 

 stanea dentata (Marsh.) Borkh. ; red-bud [Cercis canadensis ly.) ; Japan quince 

 {Chaenomeles japonica Lindl.) ; Clematis sp. ; hawthorn {Crataegus Oxycan- 

 tha ly.) ; Crataegus spp. ; quince {Cydonia oblonga Mill.) ; oleaster {Elaeagnus 

 angusti folia L.) ; " wahoo " or " burning bush " {Evonymns atropurpureiis 

 J acq.) ; Fraxinus sp. ; iVmerican holly or white holly {Ilex opaca Ait.) ; 

 sweet bay {Magnolia virginiana I,.) ; wild China tree {Melia Azedarach Iv.) ; 

 Morns sp. ; Xerium Oleander L. ; Olea sp. ; wild cherry {Padus .sp.) ; mistle- 

 toe {Phoradendron spp.) ; sycamore or plane-tree {Plaianus occidentalis 

 L.) ; European plane-tree {P. orientalis) ; cottonwood {Populus deltoides 

 Marsh.) ; Simon plum or apricot plum {Prunus Simoni Carr.) ; Prunus spp.; 

 Pyrus communis L. ; P. Mains (ly.) Britton ; live oak {Quercus virginiana 

 Mill.) ; Ribes spp. ; Rosa spp. ; weeping willow {Salix habylonica ly.) ; Sa- 

 lix spp. ; soapberry {Sapindus marginatiis Willd. ; Tilia spp. ; Vaccinium 

 spp. ; Vitis vinijera L. ; and Vitis spp. 



Of the numerous cultivated host plants, the peach tree has suffered 

 most up to now. Eulecanium causes two-fold injury : i) it abstracts the 

 sap, and thus in course of time weakens the leaves and impairs their functions; 

 2) it deposits honey-dew on the leaves and fruits, which are rendered use- 



