saccus


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saccus

[′sak·əs]
(biology)
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Outer edge of saccus has broad hilum, inner edge has deep, wedge-shaped cutout.
Uncus slender and long, sharp apically; tegumen intermediate in size; valva relatively broad; cucullus arched; harpe slender, sharp apically and bifurcate basally, shorter than uncus; sacculus processus short and pointed apically; clavus triangular; saccus intermediate in size (Fig.
5 times as long as harpe; tegumen intermediate in size; valva slender; cucullus arched; harpe short, sharp apically, almost as long as sacculus processus; sacculus processus sharp apically; clavus finger-shaped; saccus short (Fig.
recusata as follows: the color of the wing blackish brown; an obviously triangular patch between postmedial and subterminal lines; discal spot wedge-shaped with white around; harpe short and strongly sclerotized; saccus arc-shaped.
Uncus thin, finger-shaped, apex pointed, both sides folded inwardly; tegumen triangular; left and right valva entirely fused basally, basal part broader, bifid postmedially, costa long sickle-shaped, curved ventrally, apex pointed, sacculus inflated; gnathos indistinct; saccus slender, swollen distally; aedeagus slightly arched, curved cornuti at apex, microtrichia on inside of slightly exposed membrane.
The combined ventral arm of the tegumen and dorsal arm of the saccus is sinuate, having a prominent cephalic bend in the ventral third.
Uncus undivided, robust, strongly decurved with hook at caudal end; tegumen hood-like with pair of lateral processes from caudal end slightly divergent, slightly decurved, toothed along central edge; vincular arc [we use this descriptive term for the combined and often curved ventral appendix of the tegumen and dorsal appendix of the saccus (e.