. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 250 PARASITES OF GIPSY AND BROWN-TAIL MOTHS. it betrays a distinct partiality for anything that savors of the brown- tail moth. It is thereby led to seek out the molting webs of the brown-tail caterpillars in the spring and consequently comes into contact with the Apanteles THE SARCOPHAGIDS. There has been considerable controversy in the past concerning the habits of the Sarcophagidae, and a wide difference of opinion as to whether they were to be considered as truly parasitic, or whether they were mere
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 250 PARASITES OF GIPSY AND BROWN-TAIL MOTHS. it betrays a distinct partiality for anything that savors of the brown- tail moth. It is thereby led to seek out the molting webs of the brown-tail caterpillars in the spring and consequently comes into contact with the Apanteles THE SARCOPHAGIDS. There has been considerable controversy in the past concerning the habits of the Sarcophagidae, and a wide difference of opinion as to whether they were to be considered as truly parasitic, or whether they were merely scavengers, attacking and feeding upon insects which had died through some other cause. In the case of those species which are reared from grass- hoppers there seems to be no further question that they are to be classed as true parasites or at least that they are as truly parasitic as many of the more degraded among the hymenopterous parasites. This seems not to have been proved of any of the species which are found within the pupae of the larger Lepidoptera. If judgment were to be based upon the occurrence of sarcophagids in the shipments of gipsy-moth fig. 56.—Gipsy-moth pUpge from abroad, it would certainlv be judged that pupa, showing exit , , . , . ,-,, . hole left by Mono- the sarcophagids were parasitic. I heir puparia dontomerus xreus. (pj# XX, fig. 3), have frequently outnumbered the tachinid puparia, and even the tachinid puparia and hymenopterous parasites together. Unfortunately, there is nothing known of the circumstances under winch this material was collected in any instance, and for all that is known to the contrary, the sarcophagids actually entered gipsy-moth pupae which had been at- tacked and killed by another parasite, Chalcis for example, and by feeding, first upon the unconsumed contents of the pupal shell, and later upon the body of the true parasite, which might be destroyed either through accident or design on the part of the intruder, would becom
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