. Insect pests of farm, garden and orchard . es one ofthe largest and most beneficial is that of the illustrations will best show the form and structure of theseinsects, which the casualobserver will hardly beable to disti-nguish fromother families of the it will be noticed thatthe fine veins of the wingsvary consideral)ly in thedifferent parasites figured,and it is by these that theentomologist is enabledto separate the different groups and often to iden- ^^^- H.—Maggots of Pnnjdn inquisitor, a,-f ,, . ^ , parasitic Iclineumon-fly, feeding on a cater- tify the sp
. Insect pests of farm, garden and orchard . es one ofthe largest and most beneficial is that of the illustrations will best show the form and structure of theseinsects, which the casualobserver will hardly beable to disti-nguish fromother families of the it will be noticed thatthe fine veins of the wingsvary consideral)ly in thedifferent parasites figured,and it is by these that theentomologist is enabledto separate the different groups and often to iden- ^^^- H.—Maggots of Pnnjdn inquisitor, a,-f ,, . ^ , parasitic Iclineumon-fly, feeding on a cater- tify the species at a glance. piUa,. which had spun its cocoon and wasBoth this and the follow- ready of pupate,ing family are peculiar in having an exceedingly long ovipositor or egg-tube, of which theymake a very good use. It is with this extensile tube that thefemale deftly punctures the skin of some unsuspecting cater-pillar, and under it inserts her eggs. In a few days there hatchfrom these a host of young maggots which feed upon the juices and. 18 INSECT PESTS OF FARM, GARDEN AND ORCHARD tissues of the caterpillar, but nre seemingly careful to avoid injur-ing any of its vital organs, for as soon as the caterpillar reachesits full growth it changes to a pupa, apparently the maggots have reached their full size each spins up asmall silken cocoon inside the pupa, entirely filling up its now deadshell, and instead of a beautiful moth appearing in the spring,a horde of small flies are seen to emerge from a round hole in theside of the pupa, or cocoon. Thus large numbers of such pests as the apple-tree tent-cater-pillar (Clisiocampa ameri-cana), bagworms (Thyridop-teryx ephemerceformis), cater-pillars of the swallow-tailedl)utterflies which feed uponparsley, carrots, etc., and ahost of others, are consumedby members of this family. Those belonging to thegenus Ophion are partial tothe large American silkwormswhich produce some of ourlargest and most ])eautifulmoths, and d
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
