acetabulum

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Related to acetabula: hip joint

acetabulum

[‚a·sə′tab·yə·ləm]
(anatomy)
A cup-shaped socket on the hipbone that receives the head of the femur.
(invertebrate zoology)
A cavity on an insect body into which a leg inserts for articulation.
The sucker of certain invertebrates such as trematodes and tapeworms.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
-- Genital acetabula many pairs; female genital field with two pairs of acetabular plates; anterior female plates with an elongate, inner flap that is heavily sclerotized and bears one or two, short, thick, spinous, setae; posterior female plate modified with many acetabula; 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 and female legs similar; tarsal claws of walking legs bifid; coxal plates with distinctive borders.
The nymphs are unusual in having three to five pairs of genital acetabula. This species lives in the area of the labial palps of their hosts.
-- Genital acetabula five pairs; female genital field with two pairs of acetabular plates; anterior female plates with an elongate, inner flap that is heavily sclerotized and bears one or two, short, thick, spinous, setae; posterior female plate unmodified; pedipalp subcylindrical and well-sclerotized with tarsus miniscule but bearing large, obvious clawlets; dorsum with obvious dorsal plates; male genital field as in Neoatax; male fourth walking leg slightly modified with genu and tibia with enlarged dorsal spines; first walking leg with short, thick setae and similar in both sexes; tarsal claws of walking legs very large and simple.