palp

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Related to pedipalp: book lung, Cheliped, Coxal gland, chelicerae

palp

[palp]
(invertebrate zoology)
Any of various sensory, usually fleshy appendages near the oral aperture of certain invertebrates.
References in periodicals archive ?
Ramos filmed 16 males sprinting along a strand of spider silk and found that their maximum speed increased 44 percent after losing a pedipalp.
abnormipes, lacking obvious borders; pedipalp subcylindrical and well-sclerotized with tarsus usually nearly quadrate in outline with large, obvious clawlets; dorsum with obvious dorsal plates; male genital field as in Polyatax; male fourth walking leg modified with tibia bearing one or two large blunt spines; tarsal claws of walking legs bifid; first walking legs with large setae.
It differs from Phalangium in terms of shorter tarsus of pedipalps, shorter and thicker legs (Banks, 1893; Snegovaya 2012).
Pedipalp pale, with dark lines pro-and retrolaterally.
Male and female genital fields similar to those of the subgenus Unionicola; pedipalps thick with tarsus short and not tapered at distal tip; distal end of pedipalp tarsus with two small clawlets and an enlarged clawlet; first walking legs with few setae that are small and not on tubercles; male and female walking legs are similar.
The shape of the pedipalp tibial apophysis is also distinct.
S = smooth tumbler, B = tumbler with bails, PC = pedipalp claws, PA = pedipalp appendages, DL = distal leg segments, PL = proximal leg segments, M345 = third, fourth and fifth metasomal segments as one unit, M2 = second metasomal segment, M1 = first metasomal segment, Ch = chelicerae, Ca = carapace, and TMS = total mesosomal separation (= total exoskeletal disarticulation).
The movable finger of the pedipalp chela on the adult female is shorter than the carapace and slightly shorter than the fifth metasomal segment; in the holotype it is slightly shorter than the carapace, and longer than segment V of the metasoma.
Pedipalps brown, clothed in long dense brown hairs, mixed with white hairs on the tibia and base of cymbium.
e trichobothria of pedipalp femur 4 placed proximally with respect to M1 macroseta (Fig.
4 mm) distinguished from other congeners by a combination of the following genitalic characters: tip of the distomedial sclerite in the male pedipalp convexe in lateral view and without additional sclerotizations, tegular sperm duct strongly curved (Fig.