palp

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palp

(pălp)
n.
One of a pair of elongated, often segmented appendages usually found near the mouth in invertebrate organisms such as mollusks, crustaceans, and insects, the functions of which include sensation, locomotion, and feeding. Also called palpus.

pal′pal (păl′pəl) adj.

palp

a type of appendage associated with the head of invertebrate animals, usually in the mouth region, which has a tactile function. In some crustaceans, palps perform a locomotory function and in others are associated with feeding, as they are in bivalve molluscs where they produce feeding currents. In insects, palps are found on the first and second maxillae, where they are thought to be associated with olfaction.
References in periodicals archive ?
The levels of sterol esters in labial palps were in general higher than those found in the digestive gland and gonad, especially during the spring-summer, a period in which they accumulate between 14% and 27% of TC (Table 4A).
Neither male charged his palps with sperm during the courtship, indicating that males charged their palps before encountering a female.
Perhaps the extended palps of adult females limit the access of subsequently settling Osedax larvae to bone surfaces (Fig.
paulista were an increment in size, and with the appearance and development of certain structures upon every subsequent instar, including: increase in the density of body spines and papillae; presence of body setae on fifth-instar larvae; the opening of body spiracles in second instar larvae; 2 types of body shape in fifth-instar larvae; the presence of a lateral tooth in the mandibles of fourth- and fifth-instar larvae; presence of spines on the maxilla of fifth-instar larvae; alterations in the shape of galea and palps upon third-instar larvae from a cluster of sensilla to a conical elevation; and the appearance of spines on the postmentum upon fourth-instar larvae.
Palps very slightly broader than postpedicels, with 4 or 5 short bristles (longest being only 0.
Transitory and undispersed light is produced when direct physical stimulation or freshwater are applied to the peristomial palps, feeding structures on the dorsal surface of region B, and notopodia of region C.
4B), with 2 setaceous sensilla, one near base of palp and another near galea; maxillary palp paxilliform (0.
The labium consisted of 2 labial palps with a sensillum styloconicum at the apex, a sensillum chaeticum in the center (Fig.
puniceus shows simple morphology; it has paired palps and pygidial lobes, but no eyespots, nuchal organs, statocysts, or ciliary rings dorsoanteriorly--an exceptional finding in this group.
Left male palps in ventral view are used for describing the origin points of the embolus, apophyses and conductor on the tegulum.
Most adult mites possess the usual arachnoid appendages, jaws, palps at the front end, and four pairs of legs.