anal plate


Also found in: Encyclopedia.

a·nal plate

the anal portion of the cloacal plate.

a·nal plate

(ā'năl plāt)
The anal portion of the cloacal membrane.
References in periodicals archive ?
Secundibrachials of adjacent radii are separated by rising edges of arm facets or projecting anal plate.
Fifth abdominal sternite slightly convex, weakly furrowed on midline; anal plate short, weakly furrowed on midline, with 20 short setae, posterior margin entire at middle.
In mauritiana, the bristles on the ventral end of the anal plate are thick and dark (resembling clasper bristles; [ILLUSTRATION FOR FIGURE 2 OMITTED]).
Supra anal plate medium brown on anterior portion and distal projections, and yellowish brown on center; anterior margin concave on median part, lateral ones constricted on median portion and very extended distal projections (Fig.
Supra anal plate semi circular or subtriangular, with lateral margin moderately convergent, weakly convex at the posterior region.
Supra anal plate triangular, with a weak medial depression basally, the tip rounded.
At 12,000 X, the cuticle of the anal plate surface appears to have small holes or pits though more detailed electron microscopy is needed to determine the exact nature of these structures separating them from possible artifacts (Fig.
Genital plate brown, sometimes darker than anal plate and cauda; with 24(7) discal and 10-16 long and pointed marginal setae.
Anogenital fold with a pair of setae on each corner of anterior margin, each about 16-18 [micro]m long; each anal plate also with 1 seta ventral lateral margin seta.
from the front to the tip of the cauda or the posterior edge of the anal plate, respectively.
Visible abdominal sternites 2[degrees] to 4[degrees] slightly depressed at middle; 5th sternite widely convex, shiny, with scattered setiferous punctures; anal plate long, weakly concave, with a central, moderate prominence covered by setigerous granules (Fig.
Anal plates (aplt) together quadrate, located at about 1/5 of body length from posterior margin, anterior margin slightly concave and shorter than posterior margin, each plate with 4 setae on dorsal surface of posterior end, anogenital fold with 2 setae.