. The bagworm. (Thyridopteryx ephemeraeformis Haw.). Fig. 6.—Pimpla inquisitor: Female, fromside. Enlarged (from Howard). Fig . 1 .—Allocota (Hemiteles) thyridopterigis. Much enlarged(original). caterpillars. This might be explained by the hypothesis that thisparasite oviposits only in cocoons or cases of firm texture, and there-fore can not be the primary parasite of an insect which is not providedwith a case of that Fig. marix. Much enlarged (afterRiley). Certain chalcis flies also breed inthe bags of this insect. These includeSpilochalcis maride Riley (fig. 8),Cha

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. The bagworm. (Thyridopteryx ephemeraeformis Haw.). Fig. 6.—Pimpla inquisitor: Female, fromside. Enlarged (from Howard). Fig . 1 .—Allocota (Hemiteles) thyridopterigis. Much enlarged(original). caterpillars. This might be explained by the hypothesis that thisparasite oviposits only in cocoons or cases of firm texture, and there-fore can not be the primary parasite of an insect which is not providedwith a case of that Fig. marix. Much enlarged (afterRiley). Certain chalcis flies also breed inthe bags of this insect. These includeSpilochalcis maride Riley (fig. 8),Chalcis ovata Say (fig. 9), and thecommon little Dibrachys boacheanusRatz. (fig. 10). This last is a hyperparasite, in the case of the bag-worm probably secondary, and in the case of other caterpillars a [Cir. 97]

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