. A manual of dangerous insects likely to be introduced in the United States through importations. and P. pinaster). and larch. In the Himalayas this species attacks Pinus excelsa and Picea autographus Ratzeburg; Germany; attacks spruce, fir, and pine (Pinus strobus).Hylastfs attenuatus Erichson; Germany; attacks pine and decumanus Erichson; Europe; attacks spruce and Pinus himalayensis Stebbing; India; attacks Picea palliatus Gyllenhal; Europe; attacks Pinus silvcstris, P. strobus, P. pinea, P. austriaca P. maritima, larch,
. A manual of dangerous insects likely to be introduced in the United States through importations. and P. pinaster). and larch. In the Himalayas this species attacks Pinus excelsa and Picea autographus Ratzeburg; Germany; attacks spruce, fir, and pine (Pinus strobus).Hylastfs attenuatus Erichson; Germany; attacks pine and decumanus Erichson; Europe; attacks spruce and Pinus himalayensis Stebbing; India; attacks Picea palliatus Gyllenhal; Europe; attacks Pinus silvcstris, P. strobus, P. pinea, P. austriaca P. maritima, larch, and amiiinus EichofI; Euiope; attacks spruce, pine, fir, and cembrx Heer; Europe; attacks larch and Pinus duplicatus Sahlberg; Finland and Ural; spruce and pine. Ips scidentatus Boemer; Europe; spruce and pine (Pinus atistriaca and P. pinaster).Ips ribbentropi Stebbing; India; Pinus excelsa and Picea morinda.^Ips typographus Linnaeus; Europe; attacks spruce, larch, Scotch fir (Pinus silvestris).Tomicus (Myelophilus) minor Haitig; Europe; attacks pine and Fig. 37.—Barkbeetle (Pityogenes chalcographus). (Eckstein.) ?^ Tomicus (Myelophilus) piniperda ; Europe to Japan; pines, larch, suturalis Gyllenhal; Europe; spruce, fir (Picea excelsa), pine (Pinus austriaca and P. silvestris).Orthotomicus laricis Fabricius; Europe; attacks fir (Abies pectinata), larch, spruce, pine (Pinus sil-vestris).Orthotomicus proximus EichofI: Europe; thin bark of upper stems of pine and bidentatus Herbst; Europe; larch, spruce, and pine (Pinus austriaca, P. strobus, P. pinaster, P. silvestris).Pityogenes bistridentatus Eichoff; Germany, France; pine, chalcographus Linnaeus; fir (Abies pectinata), spruce (Picea excelsa), pine (Pinus strobus), larch. (See text fig. 37.)Pityogenes coniferx Stebbing; India; blue pine (Pinus excelsa), Chilgoza pine (P. gerardiana), fir (Picea morinda). (Spp plate XI, fig.
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