Identifier: lifehistorybiono106hook (find matches)
Title: The life history and bionomics of some North American ticks
Year: 1912 (1910s)
Authors: Hooker, W. A. (William Anson), 1877- Bishopp, F. C. (Fred Corry), 1884-1970 Wood, H. P. (Herbert Poland), 1883-1925 Hunter, W. D. (Walter David), 1875-1925
Subjects: Ticks
Publisher: Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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The North American Cattle Tick, Margaropus annulatus. Fig. 1.—Deposi ted-out female with eggs. Fig. 2.—Unengorged larva. Fig. 3.—Engorgednymph, dorsal view. Fig. 4. Engorged nymph, ventral view. Fig.5.- Unengorged nymph(balsam mount). Fig. 6.—Fully engorged female, dorsal view. Fig. 7.- Male, ventral view.Fig. 8.—Male, dorsal view. Fig. 9.- Unengorged female, dorsal view. Fig. 10.— Unengorgedfemale, ventral view. Fig. 11.—Fully engorged female, ventral view. (Original.) THE NORTH AMERICAN CATTLE TICK. 113 greatly lengthened. In one case a tick which dropped on November20 did not begin depositing until January 25, giving a preovipositionperiod of 66 days. As a rule, however, the adults are killed by tem-peratures which are sufficiently low to retard deposition to thisextent. The following table, which is based upon ticks which
Text Appearing After Image:
Fig. 7.—The North American cattl© tick, Margaropus annulatu; (Original.) Distribution In the United States. dropped from the host, shows an oviposition period of from 1 to 3 daysand a deposition period of from 8 to 16 days. The average numberof eggs deposited by the 10 ticks was 3,424 and the maximumnumber deposited by one female was 4,547.21448°—Bull. 106—12-—8 114 LIFE HISTORY OF NORTH AMERICAN TICKS, Table XXXVII.—Oviposition of Margaropus annulatus engorged on bovine. Date engorged Size. Number of eggs deposited—days following dropping. femaledropped. 1 2 3 4 5 6 7 8 9 10 11 1908.Aug. 3Aug. 4 Do... Do. 12 by 7.5 by 6 mm 00000035000 0 21 0 0 86 280 314 0 177 60 481596297494386420431402441302 676857560511338335425481602361 754711457320427493771612729416 535708514500393663658356978431 384576511381257540576272491353 326443442272139330272580455336 19416637215957154222228245228 105 264 241 36 12 96 76 128 150 156 53 112 13 by 7.5 by 5.5 mm 12.5 by 7 by 5 mm 141 o Aug. 6Do

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