. Bulletin. Agriculture -- New Hampshire. THE INSECT RECORD FOR 19OO 13. practically no damage was done. It is hardly probable that the causes of disappear- ance were the same as those of the Forest Tent Caterpil- lar, because the life histories of the two insects are so dif- ferent. Parasites were prob- ably in part at least respon- sible in this case. Early in May I saw an Antiopa But- terfly depositing her eggs upon the willow twig shown in Fig. 3. As soon as she flew away I saw a tiny fly running about over the eggs, and watched it as it deposited its own eggs in those of the butterfly. Th
. Bulletin. Agriculture -- New Hampshire. THE INSECT RECORD FOR 19OO 13. practically no damage was done. It is hardly probable that the causes of disappear- ance were the same as those of the Forest Tent Caterpil- lar, because the life histories of the two insects are so dif- ferent. Parasites were prob- ably in part at least respon- sible in this case. Early in May I saw an Antiopa But- terfly depositing her eggs upon the willow twig shown in Fig. 3. As soon as she flew away I saw a tiny fly running about over the eggs, and watched it as it deposited its own eggs in those of the butterfly. This fly was a parasite ; the eggs it deposit- ed would hatch into little grubs that would develop at the expense of the butterfly eggs, preventing them from hatch- ing. In half an hour the little parasite^ laid her eggs in fifteen of those of the butterfly. Another observation upon the enemies of this species seems worth recording. While driving along a country road late in May, I saw a Maryland Yellow-throat carrying an Antiopa Butterfly. The butterfly was dropped by the bird when dis- turbed and is shown in Fig. 4, the pieces broken oft^the wings probably indicating where the bird had caught it. The American Tent Caterpillar^ was rather more nu- merous than last year, though not at all abundant. Appar- ently the species is slowly increasing, and it is likely to con- tinue so to do for several years, until it becomes so numerous as to do serious damage. As I wrote in last year's Insect Record, the best time to fight the pest is during these years ^Since determined by Dr. L. O. Howard to be Telenoviusgraptce. ^Clisiocampa americana Harris. Fig. 3.—Eggs of Antiopa Butterfly on Willow 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 New Hampshire Agricultural Experiment Station. [Hanover, N. H. ] : New
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