coxa

(redirected from coxal)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

coxa

[′käk·sə]
(invertebrate zoology)
The proximal or basal segment of the leg of insects and certain other arthropods which articulates with the body.
References in periodicals archive ?
Lengths (in [micro]m) coxae (cx): I 99-112; II 95-112; III 105-110 [micro]m long; setae of coxa III: a few hs + many fs; procoxae with a group of pointed coxal bristles.
Pereomeres all of nearly same length, their coxal plates reduced or absent; long narrow oostegites extending clear across brood pouch and greatly overlapping opposite ones.
1F) Palp with 2, 1, 1, 2 setae; coxal endite with 6 distal setae; basal endite with 8 distal setae; broad scaphognathite with narrow posterior lobes having long naked setae.
Genital acetabula many pairs; female genital field with two pairs of acetabular plates; each anterior female acetabular plate with a very elongate, inner flap that is heavily sclerotized and bears one or two, short, thick, spinous, setae; posterior female plate modified and resembling that of Polyatax; pedipalp subcylindrical and well-sclerotized with tarsus rectangular and somewhat elongate with large, obvious clawlets; dorsum with obvious dorsal plates; male genital field as in Polyatax; male fourth walking leg apparently unmodified; bifid tarsal claws in all walking legs, while tarsal claws of second and third walking legs are obviously bifid to a lesser degree than those of the first and fourth walking legs; coxal plates with indistinct borders.
This skeleton belonged to an adult male individual, according to observations of the coxal bone and skull.
1A); lateral carina extending about half the distance from base toward coxal cavity; basal lobe without median line; prosternal process not visibly separating coxae for their entire length.
The presence of an oral tube (floored by the coxal apophyses) in structurally similar Pulmonoscorpius, Petaloscorpio KjellesvigWaering, 1986 and Hubeiscorpio Walossek, Li & Brauckmann, 1990 (Walossek et al.
Pronotum: Pale green to pale straw colored, with double longitudinal fuscous line medially and single longitudinal black line on each side between lateral margin and midline; mesoscutum and scutellum pale greenish yellow to straw colored, with continuation of dark medial and lateral lines from pronotum; posterolateral area of mesoscutum dark, lateral lines mark lateral margin of scutellum; propleuron dark anterior of coxal cleft and pale yellow to straw colored, with variable broad slightly dusky to dark brown medial.
19 mm); natatory sensilla absent; ventral spinulae well-devetoped on protibia and protarsus, present but less well developed on remaining legs; small spinulae on surface of all segments, more numerous on protarsus; coxa robust and elongate, coxal sutures present; trochanter divided into two regions; tarsal claws sub-equal in length, anterior claw slightly longer than posterior, each with ventroproximal spinulae.
Characterization of a novel relapsing fever spirochete in the midgut, coxal fluid, and salivary glands of the bat tick Carios kelleyi.
25 h, several drops of hemolymph were removed from the coxal joints, and gonads together with some digestive tissues were dissected.
2A): Biramous; protopodal part swollen; endopod and exopod each with two terminal and one lateroventral setae; coxal part enlarged.