Report - Entomological Society of Ontario Volume 21-25

Report - Entomological Society of Ontario Volume 21-25

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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. 1890 edition. Excerpt: ...of the inner edges of the regmina only, and not by the whole surface. In different years I have noted the first time in spring that I have heard this creature stridulate in the vicinity of Boston, Mass. In 1869, June 13; 1874, May 31; 1875, May 26 (and the same year at Compton, N.I-I., June 1); 1878, May 18 (on the summit of Blue Hill, Milton); 1879, May 31. July and August, 1867, were spent north of the White Mtuntains, at J efierson, N.H., and no Nemobius was heard there before Aug. 7. Mr. W. T. Davis says that on Staten Island there is a s uall form of this species, psrhaps distinct, in which the stridulation is " a continuous rolling whirr, instead of the ordinary crealc, creak, crealc." Nemobius /asciatus Scudd. I have noticed no difference between the chirp of this species and that of the preceding, of which it is probably only a long winged form. (Ecanthus niveus Serv. The song of the common tree cricket (Fig. 39), consists of a continuously sustained, equable, creaking roll, which varies much in intensity and differs by day and by night. Dr. Harris speaks only of their song by night, remarking: "Vhen arrived at maturity the males begin their nocturnal serenades at the approach of twilight and continue it with little or no intermission till the dawn of day. Should one of these little musicians get admission to the chamber, his incessant and loud shrilling will efiectually banish sleep." The day song of this insect is exceedingly shrill, and may be represented by the accompanying figure, though the notes vary in rapidity; when slowest they are about sixteen a second. The song is of varied length, sometimes lasting but two or three seconds, sometimes continuing for a minute or two uninterruptedly; it is more

Product details

  • Paperback | 340 pages
  • 189 x 246 x 18mm | 608g
  • United States
  • English
  • black & white illustrations
  • 1236883659
  • 9781236883650