 Pulvinaria these tubes extend from one bark-louse to another. The caterpillars are very active, moving freely about within these silken passages from beneath one scale to another. At the time my observations were made (June 24th) many of the caterpillars...  Transactions of the American Entomological Society - Page 186by American Entomological Society - 1890Full view - About this book
 | American Association for the Advancement of Science - 1879 - 1100 lehte
...tubes extend from one bark-louse to another. The caterpillars are very active, moving 4'reely about within these silken passages from beneath one scale...remained ten days in the pupa state. The greater number of the moths bred by me this year issued July 17th ; some, however, did not appear until August 13th.... | |
 | Augustus Radcliffe Grote - 1880 - 164 lehte
...tubes extend from one bark-louse to another. The caterpillars are very active, moving freely about within these silken passages from beneath one scale...transformed at once. The cocoon is made within the silken tnnnel and is quite delicate, the pupa being plainly visible within it. Individuals of this brood remained... | |
 | Augustus Radcliffe Grote - 1880 - 128 lehte
...tubes extend from one bark-louse to another. The caterpillars are very active, moving freely about within these silken passages from beneath one scale...remained ten days in the pupa state. The greater number of the moths bred by me this year issued July 17th; some, however, did not appear until August 13th.... | |
 | American Association for the Advancement of Science - 1880 - 656 lehte
...tubes extend from one bark-louse to another. The caterpillars are very active, moving freely about within these silken passages from beneath one scale...remained ten days in the pupa state. The greater number of the moths bred by me this year issued July 17th ; some, however, did not appear until August 13th.... | |
 | United States. Department of Agriculture - 1880 - 780 lehte
...tubes extend from one bark -louse to another. The caterpillars are very active, moving freely about within these silken passages from beneath one scale...another. At the time my observations were made (June 24), many of the caterpillars were full * This paper was published in the North American Entomologist,... | |
 | American Entomological Society - 1890 - 450 lehte
...freely within these silken passages from heneath one scale to another. At the time my ohservations were made (June 24th) many of the caterpillars were...the silken tunnel and is quite delicate, the pupa heing plainly visihle within it. Individuals of this hrood remained ten days in the pupa state. The... | |
 | American Association for the Advancement of Science - 1880 - 656 lehte
...tubes extend from one bark-louse to another. The caterpillars are very active, moving freely about within these silken passages from beneath one scale...remained ten days in the pupa state. The greater number of the moths bred by me this year issued July 17th ; some, however, did not appear until August 13th.... | |
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