. Economic entomology . Ccphaloneon myriadeum on maple leaf. the underside of the leaf, and has been named by the older botanists, Erineum acerinum, Pers. The mite that produces it is whitish. Erineum purpurascens is considered by Herr Low to be distinct from this; Kaltenbach and others think it the same. Another species, named by Bremi Cephaloneon solitanum, is described as growing on the upper side of the leaf in the angles of the ribs. IJASE Phytoptus pyri (Typhlodromus pyri, Sckeuten).—!. Sketch of leaf of pear j^^^ * tree bearing galls of ditto; 2. Specimens of ditto ; 3. Magnified sectio
. Economic entomology . Ccphaloneon myriadeum on maple leaf. the underside of the leaf, and has been named by the older botanists, Erineum acerinum, Pers. The mite that produces it is whitish. Erineum purpurascens is considered by Herr Low to be distinct from this; Kaltenbach and others think it the same. Another species, named by Bremi Cephaloneon solitanum, is described as growing on the upper side of the leaf in the angles of the ribs. IJASE Phytoptus pyri (Typhlodromus pyri, Sckeuten).—!. Sketch of leaf of pear j^^^ * tree bearing galls of ditto; 2. Specimens of ditto ; 3. Magnified section 3—5- of gall of ditto ; 4. Magnified sketch of Phytojjtus, the supposed larva of Typhlodromus pyri, copied from Scheuten's figure; 5. Magnified sketch of a Gamasus, supposed by Scheuten to be the perfect form of Typhlodromus pyri. This is a common affection on the leaves of the pear tree in
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondonchapmanandha
