What's the difference between haustellum and proboscis?
Haustellum
Definition:
(n.) The sucking proboscis of various insects. See Lepidoptera, and Diptera.
Example Sentences:
(1) Gordon, Crewe and Willett (1956) made direct observations, through a microscope, of the haustellum of G. morsitans as it penetrated into the ear of an anesthetised mouse and found that probing was accompanied by a copious but intermittent ejection of saliva from the hypopharynx.
Proboscis
Definition:
(n.) A hollow organ or tube attached to the head, or connected with the mouth, of various animals, and generally used in taking food or drink; a snout; a trunk.
(n.) By extension, applied to various tubelike mouth organs of the lower animals that can be everted or protruded.
(n.) The nose.
Example Sentences:
(1) New structures reported are mesoboscis retractor muscles, the formation of 3 ligament strands from the proboscis retractor muscles, a teloboscis inflator muscle, and conduit through the protrusor muscle sheath.
(2) Facial features that were identified included a proboscis (three cases), midline facial cleft (three cases), and hypotelorism (five cases).
(3) Carbon-tetrachloride was used to maintain the proper positions of the proboscis and the labella rendering a better view of the fine structures.
(4) After ingesting even a small amount of sucrose, the fly begins making frequent, tight turns, flexes its front tarsi to bring more chemosensory hairs into contact with the substrate and repeatedly extends and retracts its proboscis.
(5) The presence of the stimulant factor was established by forcing gravid females to touch the testing water with tarsi and proboscis.
(6) External nares and nasal passageways, albeit blind-ended, were prominent in the proboscis.
(7) The new genus most closely resembles the genus Acanthocephalus; it differs from this genus in having a distinctive pear-shaped proboscis, a long neck, and hooks which abruptly differ in size.
(8) When an Aedes aegypti mosquito bites you, she – because only the females, which need blood as nutrients for their offspring, bite – will probe your skin with her proboscis as many as 20 times.
(9) had penetrated with their proboscis deeply into the tunica muscularis.
(10) There they seem able to distinguish between suitable and unsuitable external conditions and accordingly they will either leave the proboscis completely or retract into the labium.
(11) Parallel studies were carried out to assess the effects of the two drugs on fly feeding behavior, measured as mean acceptance threshold: the minimum sucrose concentration to which the average fly in a population will respond by proboscis extension when its tarsi contact the solution.
(12) Because of their simplicity and potentially low cost, the techniques described here would be appealing for screening large numbers of tsetse samples from the field for the presence of any trypanosome residing in the guts or proboscis of the vector.
(13) Habituation of the proboscis extension response induced by sugar tarsal stimulation was individually studied in males of Drosophila melanogaster all along the adult life span (2-71 days of age at 25 degrees C).
(14) Vital dye marking experiments also indicate that the entire marginal zone maps to the prominent proboscis that is composed of chordamesoderm and represents the long axis of the embryo.
(15) The response was quantified by recording extracellularly from a muscle involved in proboscis movement, by measuring the duration of the proboscis extension, or by determining the number of trials necessary to abolish any visible response.
(16) Proboscis lateralis is a rare craniofacial malformation.
(17) The pharmacology of adult Phormia regina (Meigen) feeding behavior was explored by injecting candidate drugs into starved blowflies and then determining their responsiveness to aqueous sucrose, via the proboscis extension reflex.
(18) Around the oral parts of the tick an infiltration of collagenous fibres of the connective tissue is formed, which serves for a more firm attachment of the parasite, while beneath the proboscis a light band is formed from which the tick sucks the food substratum.
(19) The cyclopia associated with the medial proboscis suggests that both the telencephalon and diencephalon are dysplastic.
(20) The giant Amazon leech Haementeria ghilianii feeds by inserting an exceedingly long tubular proboscis (up to 10 cm) deep into its mammalian host.