Proceedings of the Entomological Society of Washington Volume 3-4

Proceedings of the Entomological Society of Washington Volume 3-4

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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. 1896 edition. Excerpt: ...the adult of P1't_1'o$/It/zarus fronta/is n. sp., and also described its galleries. It infests dead oak twigs on living trees of the red, black, and swamp oaks. He also described the adult and the galleries of I'z'l_yoj kt/zorus fagi n. sp., which infests beech twigs. He further described T/1/sanoes querciperda n. sp., and T. ollscllrus n. sp., the former infesting oak twigs and the latter hickory twigs. Vith regard to the genus Micracis, he showed that the secondary sexual characters are reversed from LeConte's descriptions. Mr. Schwarz congratulated Dr. Hopkins upon his discoveries and spoke particularly of the extraordinary invasion of Dendroclonus fronta/is into the pine forests of VVest Virginia and surrounding States, stating that in his opinion it was one of the most interesting phenomena of recent times. A rare species suddenly made its appearance, spread like wild fire for two years and disappeared like a stroke of lightning! He was sorry that thorough investigation as to the cause of disappearance had not been made. He considered that it was probably a case of a distinctively southern insect having been brought up in great numbers from the south in yellow pine timber, spreading rapidly in the forests and killed off by an unusually severe winter. Mr. Hopkins stated that in his opinion the insect could by no means he called a southern species since it extends to the Lake Superior region and from California to the Atlantic Coast. From the studies which he had given the matter of sudden disappearance he is inclined to think that the insect was killed off by some fungus or bacterial disease. FEBRUARY 4, 1 897. President Marlatt in the chair and Messrs. Schwarz, Ashmead, Chittenden, Banks, Wait, Gill, Fernow, Motter, ...
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Product details

  • Paperback | 338 pages
  • 189 x 246 x 18mm | 603g
  • United States
  • English
  • black & white illustrations
  • 1236943678
  • 9781236943675