CONIFER INSECTS. 



69 



Ipidae. 



Cryphahis abietis Ratzebiirg; Europe: attaeks fir (Abies pectinata), spruce (Picea excelsn), and pine. 



Cryphalus saltuarius Weiss; Europe; attacks young fir, spruce, and pine. 



Cryphahis boswclUx Stabbing; India; attacks spruce and Pinus longifolia. 



Cryphalus piccx Ratzeburg; Europe; attacks Abies pectinata and larch. 



Crypturgus piisillus Gyllenhal; Germany; attacks sprace, fii", pine (Pinus strobus and P. pinaster). 



and larch. In the Himalayas this species attacks Pinus excelsa and Picea morinda. 

 Dryocoetes autographus Ratzeburg; Germany; attacks spruce. Or, and pine (Pinus strnbus). 

 Hylastes attenuatus Erichson; Germany; attacks pine and spruce. 

 Hylastes decumanus Erichson; Europe; attacks spruce and Pinus cembra. 

 Hylastes himalayensis Stebbing; India; attacks Picea excelsa. 

 Hylurgops palliatus Gjdlenhal; Europe; attacks Pinus silvestris, P. strobus, P. pinea, P. austriaca 



P. mariiinia, larch, and spruce. 

 Ips amitinus EichofI; Euiope: attacks spruce, pine, fir, and larch. 

 Ips cembrx Heer; Europe; attacks larch and Pinus cembra. 

 Ips duplicatus Sahlberg; Finland and Ural; spruce and pine. 



Ips sexdentatus Boerner; Europe; spruce and pine (Pinus austriaca and P. pinaster). 

 Ips ribbentropi Stebbing; India; Pinus excelsa and Picea morinda. 

 ;|<7ps typographus Linnseus; Europe; attacks spruce, larch, Scotch fii' (Pinus silvestris). 

 Tomicus ( Myelophilus) minor Hartig; Europe; attacks pine and spruce. 



Fig. 37. — Barkboetle (Pifyogenes chalcographus). (Eckstein.) 



^ Tomicus (Myelophilus) piniperda Linnaeus; Europe to Japan; pines, larch, sprucf . 

 Orthotomicus suturalis Gyllenhal; Europe; spruce, fir (Picea excelsa), pine (Pinus austriaca and P. 



silvestris). 

 Orthotomicus laricis Fabrii ius; Europe; attacks fir (Abies pectinata), larch, spruce, pine (Pinus sil- 

 vestris). 

 Orthotomicus proximus Eichoff; Europe: thin bark of upper stems of pine and spruce. 

 Pilyogenes bidentatus Herbst; Europe; larch, spruce, and pine (Pinus austriaca, P. strobus, P. pinaster, 



P. silvestris). 

 Pityogenes bistridentatus Eichoff; Germany, France; pine, fir. 

 Pityogenes chalcographus Linnaeus; fir (Abies pectinata), spruce (Picea excelsa), pine (Pinus strobus), 



larch. (See text fig. 37.) 

 Pityogenes coniferx Stebbing; India; blue pine (Pinus excelsa), Cliilgoza pine (P. gerardiana), fir 



(Picea morinda). (See plate XI, fig. Za-c.) 

 Pityogenes pilidens Reitter; Europe and Asia Minor; Pinus austriaca and fir. 

 Pityogenes quadridens Hartig; Europe; Pinus silvestris and Siberian spruce. 

 Pityokteines curvidens ( Jermar; Europe; spruce (Picea excelsa), larch, balsam fir (A bies balsamea), pine 



(Pinus silvestris). 

 Pityophthorus micrographus Linnaeus; Europe; attacks Abies pectinata, Pseudotsuga mucronata, Picea 



excelsa, Pinus strobus. 

 Polygraphus major Stebbing; India; Pinus excelsa, Picea morinda 

 Polygraphus pini Stebbing; India; Pinus excelsa, Picea morinda 

 Polygraphus polygraphus Linnaeus; Europe; spruce, fir, pine (Pinus silvestris, P. strobus). 



