. Economic entomology. Beneficial insects; Insect pests; Thysanura. Phytoptus pyii. (Typhlodroiuus pyri of Scheuten.) Copied from his figure. Gamasus sp. Copied from Sch<'Uten, who supposed it to be the perlect insect oi I' pyii. Wiegman's "Archiv" for 1857, and translated into our own Annals and Magazine of Natural History in the same year. The leaves of the pear trees in his garden were attacked by black pustular inflated spots, under the epidermis of which he found the species of Phytoptus, which he named Typhlodromus pyri. On examining a large number of spotted le


. Economic entomology. Beneficial insects; Insect pests; Thysanura. Phytoptus pyii. (Typhlodroiuus pyri of Scheuten.) Copied from his figure. Gamasus sp. Copied from Sch<'Uten, who supposed it to be the perlect insect oi I' pyii. Wiegman's "Archiv" for 1857, and translated into our own Annals and Magazine of Natural History in the same year. The leaves of the pear trees in his garden were attacked by black pustular inflated spots, under the epidermis of which he found the species of Phytoptus, which he named Typhlodromus pyri. On examining a large number of spotted leaves in his garden, in which all the pear trees were similarly attacked (one tree having a third of its leaves affected), he always found the same four-footed larvse in the interior of the leaves, and, in most cases, on the exterior a species of eight-legged mite, which he took to be the perfect form of the Phytoptus. He gives figures of these, and from them it is plain that the so-called larva is a Phytoptus,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Murray, Andrew, 1812-1878. [London] Chapman and Hall


Size: 1333px × 1874px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondonchapmanandha