. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 60 THE REPORT OF THE No. 19 The larva of several species of Ciear-wing motlis are borers; Sesia acerni in the soft maple, Sesia pictipes in the wild cherry, Pseudohazis denudata in the ash. The Horn-tail, Tremex columba, or Pigeon Tremex (Fig 28), is a creature of formidable appearance. It has a stout acuform, but hollow, ovipositor which extends in its sheath from the middle of the underside of the abdomen to a length of half an inch beyond the body. The Tremex drives this instru- ment through the
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 60 THE REPORT OF THE No. 19 The larva of several species of Ciear-wing motlis are borers; Sesia acerni in the soft maple, Sesia pictipes in the wild cherry, Pseudohazis denudata in the ash. The Horn-tail, Tremex columba, or Pigeon Tremex (Fig 28), is a creature of formidable appearance. It has a stout acuform, but hollow, ovipositor which extends in its sheath from the middle of the underside of the abdomen to a length of half an inch beyond the body. The Tremex drives this instru- ment through the bark and into the soft wood of the tree (which is usually a maple or a beech), and then, by muscular action, it passes its eggs through the ovipositor to the end of the wound it has made. The Tremex is, in many in- stances, so exhausted in the process that it has not strength to withdraw its ovipositor, and perishes at its post. As soon as the young larvae are hatched they begin to tunnel in different directions, enlarging their passages as they grow. Other Horn-tails of like habits to the Tremex are Sirex alhicornis, Sirex flavicornis, and Paururus cyaneus, and these assail the 'IhiV-i- -^.. 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 Entomological Society of Ontario; Ontario. Dept. of Agriculture. Toronto, The Society
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
