What's the difference between ovipositor and piercer?

Ovipositor

Definition:

(n.) The organ with which many insects and some other animals deposit their eggs. Some ichneumon files have a long ovipositor fitted to pierce the eggs or larvae of other insects, in order to lay their own eggs within the same.

Example Sentences:

(1) Unfertilized eggs of the rose bitterling (Rhodeus ocellatus ocellatus) were squeezed out of females that had an elongated ovipositor and were dechorionated mechanically with fine forceps in physiological saline.
(2) He stared not at the twitching Petrobras P36 with its concrete in the mere, not at its drill ovipositor injecting slippy black rig eggs into England, but at the sea.
(3) To continuously monitor ovipositor movements a new actograph was devised; it was composed of a radioelement glued at the ventral tip of the ovipositor, a scintillation probe to detect ovipositor movements and a microcomputer to store and process data.
(4) Sensilla on legs and ovipositor of the moth Ostrinia nubilalis were investigated by light and scanning electron microscopy.
(5) Electrical recordings from the ovipositor nerves in the isolated nervous system showed spontaneous rhythmical bursting activity.
(6) The eighth and ninth segmental nerves of the terminal abdominal ganglion supply the ovipositor muscles.
(7) In females, the overall structure of the ovipositor appeared flaccid, less sclerotized, and misshapen.
(8) Two model proctolinergic systems are highlighted: motor control of the visceral muscles of the locust oviduct and of the skeletal muscles of the locust ovipositor.
(9) Rhythmical ovipositor movements are produced by the severed abdomen of sexually mature female grasshoppers.
(10) On the basis of a comparative morphological and embryological analysis the author concludes that lower mammals (ovipositors and marsupials) and higher mammals should not be united into a single class.
(11) The little known species, which are redescribed in detail with the illustration of the male genitalia and female ovipositors, and the key, which is revised to the genera and species, are also presented in this paper.
(12) The form of the female ovipositor indicates that other species of Chathamidae utilize starfish species as oviposition hosts.
(13) The female reproductive system consists of bursa copulatrix, ductus bursae, receptaculum seminis, paired ducti receptaculi, ovaries, oviducts, one chorion gland, ovipositor, and oviporus.
(14) The removal of the ovaries did not prevent the onset of ovipositor movements.
(15) The ovipositor is composed of two papillae densely packed with medium length mechanoreceptor sensilla (MRb: 80-160 microns, n = 420-460).
(16) Two classes should be distinguished: 1) lower mammals including modern ovipositor animals and marsupial animals and fossilized Multituberculata, Triconodonta, Symmetrodonta and Pantotheria; and 2) higher mammals or placental animals.
(17) Accumulation of pasture ticks Dermacentor marginatus has been discovered in the wool of sheep, 5-6 cm from the skin surface, the temperature in those sites being permanent 18-20 degrees C. The ticks died either in the course or following ovipositor.
(18) The ovipositor appendages of acridid insects (grasshoppers and locusts) consist of two pairs of shovel-shaped valves that are used to dig a deep chamber in the ground for egg burial, to manipulate the eggs, and to assist in capping the egg-pod with froth.
(19) The hanging ovipositor profile identified an ovipositionally spent female.
(20) It has been established that the first ovipositor was only from autogenically developed oocysts.