INSECTS OF LETTUCE AND LINDEN. 141 



LEPIDOPTERA. 

 Pyralldae. 



^ Pioneafermgalis Hiibner; Europe, Asia, North America. (See Cabbage.) 



Noctuldae. 



Mamestra brassicx Lirmseus; Europe; feeds on leaves. 



LINDEN; BASSWOOD; LIME. 



{Tilia spp. Family Tiliacese.) 



Trees distributed generally throughout the northern temperate zone. The wood 

 of several species is easily cut into veneers and is hence in much demand for light 

 boxes for packing fruits, etc. They are valuable honey trees. 



A. LINDEN INSECTS LIKELY TO BE IMPORTED. 



Eriophyes tiliarius Connold; Eriophyes tiliae Nalepa. 

 (Linden Gall Mites. Eriophyidse; Acarina.) 



Host: Tilia euro paea. 



Injury: The first-mentioned mite forms galls on the flower bracts, and the second 

 on the leaves, but neither is of vital importance. 



Distribution: England. 

 GiLLANDERS, A. T. Forcst Entomology, 1908, pp. 27, 28, 30, 31, fig. 26. 



B. IMPORTANT LINDEN INSECTS. 



HEMIPTERA. 

 Coccidse. 



Armored — 



Chionaspis salicis Linnaeus; Europe. 

 Unarmored — 



Lecanium coryli Linnaeus; Europe. 



Xylococcus filifer Loew; Europe; Tilia cordata, T. grandifloiu. 



Pyrrhocorldse. 



PynJiocoris apterus Linnaeus; Germany; in all stages sucks the juices from the leaves, fruit, and stems. 



COLEOPTERA. 

 Buprestidae. 



Agrilus viridis Linnaeus; Europe; bores in stems and branches. (See Oak). 



Lampra rutilans Fabricius, and L. undatus Fabricius; Europe; bore in bark and wood. 



Scarabseidae. 



MelolonthahippocastaniFa,hncins and M. mclolonlha Liinnasns; Europe; larvaeinjure roots of seedlings 



Ipidae. 



Ernoporus caticasicus Lind.; bark beetle; Europe. 



ErnopoTUs tilix Panzer; bark beetle; Europe; Tilia parvifolia. 



Xijloterus domesticus Linnaeus, and X. signatus Fabricius; ambrosia beetles. 



LEPIDOPTERA. 

 Cossidse. 



Cossus cossus Linnaeus, goat moth; Europe; bores in wood. (See Willow.) 

 >if^ Z euzera pyrina liinnsens; Europe; bores in wood. (See Horse-chestnut.) 



Noctuidae. 



AT j/Zmo soc/a Rott.; Europe. (See Plum.) 



Geometridse. 



Hibcrnia aurantiaria Esp., H. dcfoliaria Linnaeus, and H. marginaria Borckh.; Europe; defoliators. 



Lasiocampidse. 



Eriogastcr lanestris Linnaeus; Germany; defoliator. 



Lyinantriidae. 



Dasychira pudibunda Linnaeus, >\c Lymantria vionacha Linnaeus, ■:)fiPorthelna dispar Linnaeus, and 

 Porthesia similis Fuessly; Europe; defoliators. (See Forest defoliators.) 



