. Cranberries; : la nazionale rivista di mirtillo palustre. Mirtilli rossi. Quasi ogni specie di insetto ha il proprio nemico di insetti. Gli insetti che in preda agli altri insetti sono chiamati i predatori o parassiti. I predatori attaccare e distruggere immediatamente, mentre di solito i parassiti sono considerati come quelli che funzionano all'interno di un singolo host in- setta e distruggere gradualmente. Predatori o parassiti non ci sono così tanti diversi metodi che questi insetti impiegare in questo lavoro che è difficile a volte per decidere se la partec- ular insetto è un predatore o un para- sito. Le notevoli esempi di pred-

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. Cranberries; : the national cranberry magazine. Cranberries. Almost every species of insect has its own insect enemy. The insects which prey upon other insects are called predators or parasites. The predators attack and immediately destroy, while usually the parasites are thought of as ones that work from the inside of a single host in- sect and destroy gradually. Predators or Parasites There are so many different methods that these insects employ in this work that it is difficult at times to decide whether the partic- ular insect is a predator or a para- site. The notable examples of pred- ators are lady bird beetles, ground beetles and dragon flies. The best example of parasites are those which were so abundant this year working on the army- worms. Thousands of little cocoons looking like eggs were sent to my office and the question was often asked whether these were the eggs of the armyworm. These forms were so numerous in certain parts of the state that the furrows in the field looked as if snow had fallen. The little larvae or worms had lived their life within the body of the armyworm or cutworm sap- ping its vitality and then had bored through the body wall of the in- sect. As soon as it reached the surface the parasite immediately began to spin its whitish cocoon. These cocoons are attached for a AT LEFT: Little larvae issuing from a caterpillar. They have been living on its internal parts and are now ready to spin their cocoons and pupate. BELOW: An internal parasite that is attacking the chrysalis of a caterpillar. AT RIGHT: Syrphus flies and the larvae. The immature larvae are very fond of plant lice and destroy quantities of them during a season.. while to the host insect but later often fall off. This gave the snow flake effect. How They Work For Us Some other forms of parasites are hatched within the burrows of boring insects. When the borer comes along the parasite attacks it. Some parasite mothers retain the eggs within their bodies until hatched or

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