lunule


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Related to lunule: obdormition

lu·nule

(lū'nūl),
1. Synonym(s): lunule of nail
2. A small semilunar structure.

lu·nule

(lūn'yūl)
1. Synonym(s): lunule of nail.
2. A small semilunar structure.
References in periodicals archive ?
Head blackish brown with grayish microtomentum; orbital plates subglossy blackish brown with microtomentum; ocellar triangle darkish brown without microtomentum; lunule strap-shaped, darkish gray with black margin.
Shell elongate, equivalved, dorsal and ventral margins subparallel; beaks rise above dorsal margin, tightly incurved, prosogyrate; posterior margin more broadly curved than anterior margin; greatest length below midheight, greatest width anterior of midlength; lunule and escutcheon present; valve surface with numerous broad, comarginal, rounded plicae commonly becoming coarser ventrally; some plicae bifurcate posteriorly; muscle scars and hinge not observed.
Orbital plate subshiny black with microtomentum; ocellar triangle brownish without microtomentum; lunule small, yellow with brown margin.
Frons with 2 pairs fronto-orbital setae, with anterior seta closer to lunule than to posterior seta.
8 length of frons, markedly wider at socket of posterior orbital seta; lateral margins with narrow silver pruinose fascia (adjacent to eye margin), slightly wider at antennal insertions; posterior orbital seta moderately strong, slightly longer than outer vertical seta; antennal scape and pedicel brown-grey pruinose, flagellomere 1 yellow pruinose basally, pitchy brown, grey pruinose apically, arista with 10 long dorsal branches and 4 ventral branches in addition to terminal fork; lunule brown, face with narrow silver fascia (adjacent to eye margin); occiput grey pruinose; gena narrow, eye height/genal height ratio: 10:1 (HT), silver pruinose throughout, very slightly darker beyond basal angle; palpus pale brown, brown microtrichose.
1 brown, silver-grey pruinose, yellow-brown basally, moderately short, ca twice as long as wide, apex squarely rounded, arista with 11 or 12 long dorsal branches and 3 or 4 ventral branches in addition to terminal fork; lunule and face uniform silver pruinose throughout, face with extremely broad silver fascia (adjacent to eye margin), not contrasting markedly with face, facial carina developed as a prominent ridge; 1 pair of moderately weak vibrissae; occiput with strong, black postocular setae; gena wide, eye height/genal height ratio: 1: 10 (HT), silver pruinose, abruptly dirty brown beyond basal angle; palpus narrow, yellow-brown, black microtrichose.
5x width of that at level of anterior oc, with several minute dark setulae across middle; lunule high, about equal to length of antennal segment 3; ocp brown except for upper 1/3 of postocular margin and behind vertex, which are yellow; ocp in profile narrowly visible behind eye margin in lower half; short postocular setulae in one row; eye almost round, just a little higher than long and anterior facets about twice size of posterior facets; mouthparts small, yellow, palp short and round, vibrissal setulae of buccal margin only a little longer that genal setulae; face small, poorly sclerotized and depressed; median carina absent.
28 diameter of eye, second segment with dorsal seta; 3 orb, all set far forward such that hind orb inserted half way from level of lunule to level of vertex, 1 vte and 1 vti, oc strongly divergent, pvt short, about 1/3 length of anteior orb and crossed, about 6 minute white setulae scattered on fr, postocular setulae very short and in 1 row, and postgenal seta short.
5 height of eye and having numerous rather longer yellow setulae, 2 short setae at vibrissal corner, mouthparts yellow, 8 setulae on fr with 1 pair of longer setulae above lunule and another in front of oc triangle, 3 orb with 1 short setula in front, 1 vti and 1 vte, pvt distinct and convergent, ocellars long, divergent, antenna yellow, most of second segment of arista dark.