Bui. 432, U. S. Dept. of Agriculture. 



Plate I. 



The Spike-Horned Leaf-Miner (Cerodonta dorsalis). 



Fig T.—fMro'lonla 'UirmliH: Adult female, florval view, Kreiitly ciilarifcrl. la llearl of samo 

 .item V ew Hliowir.K U„>lh or horn at tip of a.-toiinkl'inonf o,.larK(,.]. fTo '/-8o,aioi?o{ 

 leaf Ma/1<: .showing c-KKH in Nilu an<l also ymnv; l.irvin \,>'KUunuy; their imIiich Hliffhllv 

 u'l^'i^^L, ^■'\ '''**'^' ^^'-''^fy «^"''^rKe<I Fl<i.3.-Larvu, lul-rnl view, .nueh cilnrK.'. .' ;K A . 

 Fr -.^'5,";V';T;T' """•« ^"'-^W^".- i'Vi,4.-I'M,,Mri(.,n. .lornal view, fcrently .aHume.l. 

 £••■■<•■/?/ barley HtctriHhowInK usual posllioii of piipariiiin huncath leaf Hhoath. 

 gr^tly"^nlS"\oSial)' ''^"•^"''''^''■''^""' '""■""' ^« "' ^-'' '^'^'•''««'*'- <l"r«"l view, very 



