The Canadian Entomologist Volume 24-25

The Canadian Entomologist Volume 24-25

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892 edition. Excerpt: ...fairuelis, n. sp. $.--Same as the above description of rubidus, with these exceptions: --Head, antennae, thorax, scutellum and. NOTES ON ZARRIA AMERICANA.--CRESS. BY REV. THOMAS W. KYLES, SOUTH QUEBEC. The young larva of Zar a Americana appears in the beginning of July on Mtnyanthes trifoliata. It lies curled on the underside of the leaf. Its head is black, and its body lead-colour above and greenish white beneath. It develops into the most beautiful larva of any of the Tenthredinidae that I am acquainted with. Description of the full-grown larva.--Length one and a-quarter inches. Head black. Body above lead colour--excepting the anal seg ment, which is greenish white. The underside and the legs are greenish white. The forelegs are tipped with black. Along the back are eleven pairs of raised and conspicuous bright yellow spots. Between the pairs, and on either side of them, are conspicuous jet-black spots, which, taken with the yellow ones, form rows across the back. There are other rows of smaller black and pale-yellow spots--two after each row of the larger ones. The side lines are white. Above these lines, on the margin of the lead-colour, is a row of black dots. Beneath them, just above the legs, is a series of raised yellow spots--each spot being surmounted by one or two black dots. The larvae were plentiful in one spot, but could hardly be said to be gregarious, as only one or two were to be found on a plant. Towards the end of July the larva spins around itself a closely woven, dark-brown cocoon. In the spinning it usually gathers several leaves of the plant about it. The larva remains unchanged in the cocoon till spring, when it assumes the pupal state. The fly makes its appearance in the middle of May. Description more

Product details

  • Paperback | 128 pages
  • 189 x 246 x 7mm | 240g
  • United States
  • English
  • black & white illustrations
  • 1236773438
  • 9781236773432