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, pl.


(ke-lis'ĭ-ră, -ĭ-rē),
One of the two anterior appendages of arachnids; in ticks and parasitic mites, the chelicerae are piercing and cutting structures, and constitute important feeding organs.
[G. chēlē, claw, + keras, horn]


n. pl. chelic·erae (-ə-rē′)
Either of the first pair of fanglike appendages near the mouth of an arachnid or a horseshoe crab, often modified for grasping and piercing.


one of a pair of grasping and piercing organs present in Arachnids and Horseshoe crabs.
References in periodicals archive ?
2, arrow), promarginal cheliceral rim with three teeth, no palpal femoral groove and no apophysis on male palpal patella, RTA present 4 3.
Labial/ Standing motionless, Standing motionless, cheliceral labium rapidly chelicerae rapidly tapping tapping the leaf tapping the leaf surface.
Chelicerae (length 131) chelate-dentate; cheliceral setae setiform, barbed, cha (61) longer than chb (32).
Cheliceral setae setiform, barbed; cha (36-41) slightly longer, than chb (24-28).
Chelicerae: With abundant fine white setae on the internal and ventral surfaces; cheliceral dentition characteristic of the family Buthidae (Vachon 1963).
4); cheliceral promargin with three teeth, retromargin with two teeth; shaggy seta distinct (Figs 5, 6); labium trapezoidal, wider than long; endites straight laterally with indistinct serrula comprising short blunt denticles, with dense maxillar hair tuft on mesal margins (Figs 7, 8).
Two cheliceral characters were proposed as synapomorphies for the enlarged superfamily Palpimanoidea by Forster and Platnick (1984): the presence of peg teeth (modified setae) on the promargin of the cheliceral furrow, and the presence of an elevated cheliceral gland mound.
Outer cheliceral face with scopulae; inner margin with 15 teeth and some basal denticles.
Only the male of this species has on each basal cheliceral segment a groove above the fang and an adjacent lateral carina.