. A manual of dangerous insects likely to be introduced in the United States through importations. Fig. 41.—Pine sawfly {Itycorsia campcstris): Injury. (Barbey.) figs. 338, 78 A MANUAL OF DANGEROUS IlSrSECTS. Plemellella abietina Seitner. (Spruce Seed Midge. Itonididae [Cecidomyiidse]; Diptera.) Host: Fir {Abies). Injury: Breeds in the seed, which become shrunken and worthies?. Desaiption: Larvae red. Distribution: Europe. SoRAUER, p. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, p. Fig. ?12.—Red-headed flrworm (Enarmonia ruflmltrana): Injury. (liarbej.) F, OTHER INSECTS ATTACK
. A manual of dangerous insects likely to be introduced in the United States through importations. Fig. 41.—Pine sawfly {Itycorsia campcstris): Injury. (Barbey.) figs. 338, 78 A MANUAL OF DANGEROUS IlSrSECTS. Plemellella abietina Seitner. (Spruce Seed Midge. Itonididae [Cecidomyiidse]; Diptera.) Host: Fir {Abies). Injury: Breeds in the seed, which become shrunken and worthies?. Desaiption: Larvae red. Distribution: Europe. SoRAUER, p. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, p. Fig. ?12.—Red-headed flrworm (Enarmonia ruflmltrana): Injury. (liarbej.) F, OTHER INSECTS ATTACKING FIR (ABIES). Lachnus grossus Kaltenbach and L. picfa? Walker, plant lice; Europe (Germany); live on the pkhtse Mordwilko; Europe; lives on the under side of the needles. Prociphilus bumelise Schrank, a root louse; Europe; attacks roots of Abies pectinata, A. balsamea,and A. fraseri. (See Ash.) INSECTS OF CONIFERS (fIB^ SPRUCe). 79 Coccidae: Armored— Lepidoijphcs abictis Sigw^rei: Europe; Abies. Poliaspis pini Ma^; Japan; Abies — Lecaninm scriceiim Lindiiiger; Bavaria: Abies pectinata. Dri/ophilus pusillus Gyllenhal; Europe; attacks buds. Ernobius abietis Fabrieius, E. angusticoUis Ratzeburg, and E. longicornis Sturm; Europe; attacks thecones. Lymexylonidae. Hylecatusdermestoides Linnxus; Germany; bores in white fir wood. Elateridae. Athous liirtis Herbst; Europe; attacks seedlings of fir. Cerambycidae. M
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