Alternating generations; a biological study of oak galls and gall flies . hidden in the abdomen duringrepose, comes perfectly into view while ovipositing, andthe two pairs of plates are seen at the same as the exact movements of the spiculae are onlyobservable during the slight protrusion of the plates, itis necessary that we should have the plates exposed inorder to observe the character of these movementsproperly. This may be demonstrated in the followingway. Wait until the Neuroterus laeviuscuhts pricks thebud, and when the ovipositor has penetrated into thebud, try by a quick move
Alternating generations; a biological study of oak galls and gall flies . hidden in the abdomen duringrepose, comes perfectly into view while ovipositing, andthe two pairs of plates are seen at the same as the exact movements of the spiculae are onlyobservable during the slight protrusion of the plates, itis necessary that we should have the plates exposed inorder to observe the character of these movementsproperly. This may be demonstrated in the followingway. Wait until the Neuroterus laeviuscuhts pricks thebud, and when the ovipositor has penetrated into thebud, try by a quick movement to pull the fly off; theovipositor is too firmly fixed, resists, and breaks off \There remains connected with it the whole motorapparatus, and also the large ganglion which innervatesthe muscles; consequently the pricking movementsproceed regularly until the muscles die. It is then [ Lichtenstein states that this often takes place when the flies areat liberty, and in spring he had frequently found the ovipositor andpart of the abdomen of a cynips fixed in a bud.]. Pla-te ni
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgallsbo, bookyear1894
