. A manual of dangerous insects likely to be introduced in the United States through importations. Coniferous Bark Beetles. Fig. l.—Pohjqraphus irerwhi: Larva: la, pupa: 16, adult female, dnrsal view (above) and lateraview (below): Ic, head cf female: Id. antenna: If, adult male, dorsal view (above) and lateral view(bekw). Fig. 2.~PtiIotoxitiiis zhohi: Ef:g: 2a, adult female, dorsal view (above) and lateral view(belcw); 26, antenna: 2c, le«: 2/, adult male, dorsal view (al)ove) and lateral view (below). —Pityogenes coniferae: Adult female, dorsal view (left) and lateral view (right, abov

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. A manual of dangerous insects likely to be introduced in the United States through importations. Coniferous Bark Beetles. Fig. l.—Pohjqraphus irerwhi: Larva: la, pupa: 16, adult female, dnrsal view (above) and lateraview (below): Ic, head cf female: Id. antenna: If, adult male, dorsal view (above) and lateral view(bekw). Fig. 2.~PtiIotoxitiiis zhohi: Ef:g: 2a, adult female, dorsal view (above) and lateral view(belcw); 26, antenna: 2c, le«: 2/, adult male, dorsal view (al)ove) and lateral view (below). —Pityogenes coniferae: Adult female, dorsal view (left) and lateral view (right, above fiiKure); 3a,antenna: .36, leg; 3c, adult male, lateral view (left) and dorsal view (right). (Stebl)ing.) U. S. Dept. of Agriculture, Manual of Dangerous Insects. Plate

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashingtongovtprin