. Grasses of North America [microform] : chapters on the physiology, composition, selection, improving and cultivation of grasses, management of grass lands, also chapters on clovers, injurious insects and fungi. Grasses; Forage plants; Graminées; Plantes fourragères. 876 HYLESINUS TRIFOLII. CLOVER ROOT BORER. This insect has long hccn known u-s a not very common insect of Germany in Europe. Miiller, us shown by the name, re- gartled it as an enemy of tlie clover, while Schmitt tliought that it attacked sucli plants as were already enfeebled, and was not a serious injury. In 1878 the beetle at
. Grasses of North America [microform] : chapters on the physiology, composition, selection, improving and cultivation of grasses, management of grass lands, also chapters on clovers, injurious insects and fungi. Grasses; Forage plants; Graminées; Plantes fourragères. 876 HYLESINUS TRIFOLII. CLOVER ROOT BORER. This insect has long hccn known u-s a not very common insect of Germany in Europe. Miiller, us shown by the name, re- gartled it as an enemy of tlie clover, while Schmitt tliought that it attacked sucli plants as were already enfeebled, and was not a serious injury. In 1878 the beetle attacked this valuable plant in northwestern New York, and the fact that it injured very se- riously the clover of that region proves tliat Miiller was correct and Schmi't wrong. Prof. Kiley investigated the habits of the insect, which he found very destructive to the clover in Yates, Ontario and Seneca counties. He described it under the name Ilylesinus trifolii, or Clover-root liorer, and pointed out the fact that it is much like one of our common bark beetles, Ilylesinus opaculus Lee, which is often found just under th bark of ash and elm trees. While much like the elm bark beetle, it is not only a different species, but is placed in a different genus,—Hylastes by Leconte and Horn, and by European Coleopterists. The family to which it belongs, Sco- lytidiv, is represented by numerous species, usually called bark beetles, as they tunnel and sculpture various evergreen and deciduous trees just beneath the bark. It is often stated that they attack enfeebled trees, yet I have often found them indus- trious and thriving on trees which were in full strength and vigor. The insect is well rei)resented in Fig. 138, (I showing the aifeoted plant, J the grub or larva, c the pupa, and d the beetle or inuigo. The eggs are ^ ,.,„ whitish oval, the larva white, with Fio. 138. ' yellow head. The length of larva is 3 m m (.l*^ of an inch) in. Please note that these images are extracted f
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1896
