78 A MANUAL OF DANGEROUS INSECTS. 



Plemeliella abletina Seitner. 



(Spruce Seed Midge. Itonididse [Cecidomyiidse]; Diptera.) 



Host: Fir {Abies). 



Injury: Breeds in the seed, whicli become slinmken and ■worthless. 

 Description: Larvas red. 

 Distribution: Europe. 

 SoRAUER, p. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, p. 444. 



Fig. 42. — Red-headed firworm {Enarmonia rufimilrana): Injury. (IJarbey.) 



F. OTHER INSECTS ATTACKING FIB (ABIES). 



HEMIPTER.\. 

 Aphidldse. 



Lachnus grossits Kaltenbach and L. picex Walker, plant lice; Europe (Germany); live on the bark. 

 Lachnuis pichtx Mordwilko; Europe; lives on the under side of the needles. 



Prociphilus bumelix Sclirank, a root louse; Europe: attacks roots of Abies pectinata, A. balsamea, 

 and A. fraseri. (See Ash.) 



