. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 60 NORTH AMERICAN FEVER TICK AND OTHER SPECIES. Table XVI.—Incubation and longevity of Amblyomma americanum. Eggs deposited. Com- menced to hatch. Apr. 15-17 June 3 Apr. 25 1 June 5 Apr. 28 June 8 May 28 and 29 July 1 May 30 and 31 July 1 Minimum incuba- tion period. Period of— Seed^ticksaU, . 1 tion to death. Sept. 13. Days. 50 42 42 35 ! Nov. f a 33 ' Nov. 22. Days. 152 Hatching to death. Days. 103 163 177 129+ 145 « One or more alive. From the above table it will be seen that the incubation period in April and
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 60 NORTH AMERICAN FEVER TICK AND OTHER SPECIES. Table XVI.—Incubation and longevity of Amblyomma americanum. Eggs deposited. Com- menced to hatch. Apr. 15-17 June 3 Apr. 25 1 June 5 Apr. 28 June 8 May 28 and 29 July 1 May 30 and 31 July 1 Minimum incuba- tion period. Period of— Seed^ticksaU, . 1 tion to death. Sept. 13. Days. 50 42 42 35 ! Nov. f a 33 ' Nov. 22. Days. 152 Hatching to death. Days. 103 163 177 129+ 145 « One or more alive. From the above table it will be seen that the incubation period in April and May is about 7 weeks. Eggs deposited in the latter part of May hatched in 5 weeks. Prof. H. A. Morgan has found some specimens to pass the first molt on the host, drop- ping in about 10 days fol- lowing that molt, or just previous to the second molt. The greater num- ber dropped in from 4 to 7 days. The molting of the nymph was found to last 6 weeks. Engorge- ment of the adult in March and April occupied from 7 to 11 days. The resistance of the fe- male to water seems to be similar to that of the fever tick. Seven females were submerged for 18 hours, all becoming active fol- lowing removal from the water. The next day all Only one, an unengorged. Fig. 9.—Amblyomma cajennense: Mouth parts of male. Greatly enlarged (original). were again submerged for 45 hours, specimen, survived. In the adult stage both sexes will reattach, as seems probable in the larval and nymphal stages. ^h. Mitchell has observed adults on grass in the act of copulation. CAYENNE TICK. (An)blyonivia cajennense Fab.) Synonyms: I. crenatum Say (Banks). A. mixtum Koeli (Banks), /. hfrrenv Duges (Neum.), A. sculptus Berlese (Neum.). This species was described from Cayenne in 1794, no host being. 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
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