Parapodia hardly projecting; palps of prosomium forming branched gills; no pharynx or eversible buccal region; no septa in thorax, septa in abdomen regularly disposed.
We have seen no ground for attributing to the palps special powers of perceiving odours or flavours, nor have we observed that they aid directly in filling the mouth with food.
He observes that in the various Coleoptera and Orthoptera submitted to experiment the palps are passive while food is being passed into the mouth.
Insects, tending to the conclusion that the palps and the cerci may be sensitive to odours, and that in special cases the palps may be even more sensitive in this respect than the antennæ.
The observation of live Cockroaches has satisfied us that the palps are constantly used when the Insect is active, whether feeding or not, to explore the surface upon which it moves.
Two Cockroaches had their palps (maxillary and labial) removed; two others had the antennæ removed.
The perception of faint odours cannot be effected by thepalps or cerci of the Cockroach, but only by the antennæ.
The question has lately been investigated experimentally by Plateau,[54] who finds that removal of both maxillary and labial palps does not interfere either with mastication or the choice of food.
Similar experiments were made with other substances, and Insects whose antennæ and palps had been removed were subjected to trial.
The palps of the maxillæ and labium have been variously regarded as sensory and masticatory instruments.
Jobert has figured the sensory organs of the maxillary palps of the Mole-cricket (Ann.
The labium, which was so important to the larva as a spinneret, has disappeared almost completely, but the labial palps (Lp) are large and evidently important.
Plateau’s experiments are conclusive as to the subordinate value of the palps in feeding.
The cephalothorax and palps are a little darker yellowish brown.
The greatest modification is found in the blow-fly proboscis, which is a soft, sucking tube, with no outward resemblance to the generalised plan, except for the palps of the accessory jaws.
The first pair of limbs is often chelate or prehensile, rarely antenniform; whilst the second, third and fourth may also be chelate, or may be simple palps or walking legs.
The labial palps are direct continuations of the lips.
The labial tentacles or palps of Anodonta (n, o in fig.
Labial palps free, very broad, and provided with a posterior appendage; branchial filaments transverse; shell has an angular dorsal border; mantle open along its whole border.
The mandibles are strong, adapted for biting the vegetable substances on which these beetles feed, and the palps of the second maxillae have three segments.
These small palps were probably retractile, and capable of being withdrawn entirely under the hood.
Patten says that the only organs which seem to him to be comparable with the gustatory porous organs of Limulus are the sense-organs in the extremities of the palps and of the first pair of legs of Galeodes, as described by Gaubert.
These palps belong to the appendages of the hindmost segment of the head, appendages which in insects are modified to form a hind-lip or labium, bounding the mouth cavity below or behind.
These may be formed by the modification of almost any of the appendages, often the antennules or antennae or some of the thoracic limbs, or even the mandibularpalps (some Ostracoda).
They differ from the Diptera, however, in the general presence of palps to both pairs of maxillae, and in the absence of a hypopharynx, so it is possible that their relationship to the Diptera is less close than has been supposed.
Mandibles fused into a piercer; first maxillae developed as piercers; palps of both pairs of maxillae present; hypopharynx wanting.
The sucking portions of the maxillae are vestigial, but the palps are long and jointed.
Sometimes organs are present in the pupa which are undeveloped in the imago, such as the maxillary palps of the Sesiidae (clearwing moths) and the pectination on the feelers of female Saturniids.
To that part of the world is restricted the allied family of the Hypsidae, distinguished from the "tussocks" by the slender upturned terminal segment of the labial palps and by the development of the maxillae.
The maxillae are developed but their palps are vestigial, while the terminal segment of the labial palp is short and pointed.
The hairy covering of the head is smooth, and the maxillary palps are usually vestigial.
The maxillary palps are absent or vestigial, and a frenulum is usually present on the hindwing.
When at rest, the proboscis is rolled up into a close spiral beneath the head and between the labial palps (fig.
This group includes a number of moths of delicate build with elongate legs, the maxillae and their palps being usually well developed.
The moths have labial palps with slender pointed terminal segments, and narrow pointed wings, but the neuration (except in the Elachistidae) is less degenerate than in most Tineidae.
The fifth radial nervure does not arise from the third, the maxillae are well developed, but their palps are obsolete; the head is densely clothed with erect scales; the terminal segment of the labial palp is short and obtuse.
In the other three families the maxillary palps are vestigial or obsolete.
They are provided with functional mandibles, while the maxillae have distinct laciniae, well-developed palps and galeae not modified for suction (see fig.
It will often patiently explore a large area, testing the surface with itspalps as it goes, without any obvious reward.
The creature could, however, achieve a kind of whistle by rubbing its palpsagainst its mandibles.
The inner edge of the first joint of the palp is furnished with "keys" which are rubbed against the mandible spines when the palps are vibrated.
The palps are sense-organs and perhaps test the food.
The palps are more conspicuous than the tentacles, and consist of two parts, a large base and a small terminal point, the latter capable of being withdrawn.
The palps are long, and the second head-piece (peristomium) is twice as long as the next segment.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "palps" in a variety of sentences. We hope that you will now be able to make sentences using this word.
