cucullus


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cucullus

[kyü′kəl·əs]
(invertebrate zoology)
A transverse flap at the anterior edge of the carapace that hangs over the mouthparts of certain arachnids.
References in periodicals archive ?
Wolfe and Estes (1992) found if the cucullus is removed, fruit set is highly reduced in the field but not if flowers were hand pollinated, suggesting the cucullus may act a pollinator guide.
Observaciones: esta especie se asemeja en las estructuras de los genitales del macho a Scriptania syzygia Hampson, 1905, en estructuras como: ampulla con forma laminar; digitus delgado y agudo; forma y disposicion del cucullus y corona.
But are distinct due to uncus long and narrow and sacculus and cucullus wide in Zadadra Moore and uncus slightly S-curved; sacculus almost fused by their ventral edges, their apices upturned; cucullus noticeably shorter than sacculus in Prabhasa Moore (Dubatolov & Zolotuhin, 2011).
scale-like setae completely absent; (iii) cucullus with only some scarce tubercles restricted to anterior and lateral margins; (iv) carapace without pits (Fig.
Valva narrow, directed dorsad with cucullus above uncus; sacculus sinuate, with inward bend 1/3 distance from base.
Uncus bifurcated at base, 1/2 times as long as tegument, each fork medium-long, slender at apex, broad at base; tegumen wide and arc-shaped, socii broad and wide, incurved at apex and strongly setose, shorter than uncus; gnathos degenerated; 1 pulvinus between tegument and valva, finger-shaped protuberance at pulvini; valva clavate, wide and thick at base; cucullus thin and long, strongly sclerotized; juxta similar triangle-shaped; saccus medium-long and thin.
narino, but can easily be distinguished by the lack of deep pits on the cucullus and carapace, the absence of elevated tubercles on the distal half of the palpal tibia, and the unexpanded male metatarsus III.
paramediana has a slender and sharper uncus, a considerably shorter and more rounded proximal lobe of valva, a slightly broader, less rounded cucullus, a more slender tegumen, a significantly longer and more curved ampulla and a shorter, somewhat thicker aedeagus compared with those of M.
Uncus slender and long, sharp apically; tegumen relatively narrow; valva intermediate in size; cucullus arched; harpe slender and curved distally, shorter than uncus, sharp apically and bifurcate basally; sacculus intermediate in size, left processus blunt, right processus pointed; clavus triangular; saccus relatively broad (Fig.
The new species is very similar to Pangrapta lasiophora (Hampson, 1926) in its external features, but can be distinguished in that the new species has a darker wing ground color, a broader cucullus, V-shaped saccus and the straight and long vesica compared to lasiophora.