. A manual of dangerous insects likely to be introduced in the United States through importations. Fig. 39.—Pine bark beetle (Polygraphus trenchi): Galleries in Pinus gerardiana. fStebbing.) Piatypodidae. Crossotarsus fairmairei Chapuis; India; bores in wood of Pinus biformis Chapuis; India; infests Pinus longifolia. (See pi. XV.) Semiothiia liturala Clm.; Europe; attacks the Lasiocampa quercus Linnaeus; Germany; attacks Agrotis tritici Linnaeus; Europe; injures roots of seedlings. 76 A MANUAL OF DANGEROUS INSE
. A manual of dangerous insects likely to be introduced in the United States through importations. Fig. 39.—Pine bark beetle (Polygraphus trenchi): Galleries in Pinus gerardiana. fStebbing.) Piatypodidae. Crossotarsus fairmairei Chapuis; India; bores in wood of Pinus biformis Chapuis; India; infests Pinus longifolia. (See pi. XV.) Semiothiia liturala Clm.; Europe; attacks the Lasiocampa quercus Linnaeus; Germany; attacks Agrotis tritici Linnaeus; Europe; injures roots of seedlings. 76 A MANUAL OF DANGEROUS INSECTS. Pyralldae. Dioryctria splendidella H. Sch.; Germany; attacks cones, shoots, and elutella Hiibner; Germany; attacks seeds and cones . Psychldae. Clania crameri Westwood; India; attacks needles of Pinus Fig. 10.—Pine web-worm {Cmthocampu pilyocampai: Nests. ( Ocnerostoma piniariella Zell.; Germany; attacks Cnethocampa pinivora Treitschke; Europe; attacks foliage. Cnethocampa pityocampa Schiffermiller; Europe; attacks foliage of Pinus pinea, P. pinaster, P. laricio,P. halepensis. (See text fig. 40.) INSECTS OF CONIFERS (fIr), 77 Itijcursi-i cimpestris Liniisus, a sawfly; Europe; attacks needles. (See text fig. 41.) E. BETTER KNOWN IMPORTANT PESTS OF FIR (ABIES).Eucosoma nigricana H. Scb. (Eplblenia). (Fir Bud Worm. Tortricidse; Lepidoptera.) Host: Silver tir {Ahies pectinata D. C.) Injurij: Feeds in the buds. Very likely to be introduced in buds on nursery stockduring winter. Description and biologij: Moth wing expanse 11-1,3 mm., forewings dark brown withviolet red shimmer and leadgray lines. Larva yellow-ish to reddish brown, withblack head and thoracicshield. Feeds in the buds,hibernating as a larva. Inth
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