Synonymer & Information om | Engelska ordet VALVA

Exempel på hur man kan använda VALVA i en mening

• a substructure of the valva, a structure in male insects that is used to hold the female during copulation.
• The subfamily is characterized by the male genitalia with a bridge-like structure connecting the tegumen and the valva, and the uncus almost always is vestigial with two lobes at the dorsal base, only exceptionally united into a broad plate, but never as a thorn or spine.
• The male genitalia have a hooked gnathos and the valva have a C-shaped plica, with numerous fine wrinkles between the plica and costa.
• The specific name is derived from the Latin denticulatus (with small teeth), in reference to the denticulate apex of the saccular process in the male valva.
• It differs from related species by its distinct black androconial scales on the hindwing surface and by its characteristic male genitalia: broad gnathos with long distal processes, uncus with conspicuous corners and valva with long distal process.
• They form a ring-like structure for the attachment of genital parts and a pair of lateral clasping organs (claspers, valvae (singular valva), or 'harpes').
• It is similar to Fibuloides cyanopsis in the shape of uncus and socius, but can be distinguished by the trapezioidal cucullus and the absence of the enlarged, flattened bristles on the neck of valva.
• The specific epithet is from the Latin prefix dent- (meaning dentate) and processus (meaning process) and refers to the valva with narrow sclerotized plate bearing large teeth ventrobasally.
• Male genitalia: Socii fairly long, on rather short base; valva up-curved; sacculus with long, rounded free termination; median part of transtilla fairly long, with distinct apical bifurcation.
• In males, the saccus is short, the gnathos broadly fused with the central component and weakly denticulated laterally and the valva subtriangular.
• The specific name refers to the shape of the valva and is derived from Latin tri- (meaning short three) and lobate (meaning having lobes).
• The species name refers to the straight distal margin of the valva and is derived from Latin rect (meaning straight) and marginalis (meaning margin).
• It can be discriminated from other members of the genus by the shape of its saccus, which is like an elongated triangle, its elongate-spatulate valva and its wedge-shaped uncus.
• On its mesal side, the valva sacculus is produced as a strongly sclerotised arm that usually ends dorsally in a broad, spinulose tip or a needleshaped projection, and in Aristebulea, Mimetebulea and Pseudebulea, the mediodorsal sacculus bears a medially directed process.
• Valva costae very broad, straight to slightly concave, basally each with a medially directed slender, apically pointed projection (which are, however, not the transtilla arms); valva apex broad rounded, ventral valva side medially broadly bulging outward, in basal half with elongate sacculus.
• Male genitalia with tegumen a wide arch; socii with broad base, weak, setose; median process of transtilla long and slender; valva slender, cucullus tapering in proximal half, parallel sided or slightly tapering in distal half, sacculus short, rounded, protruding; excavation between sacculus and cucullus deep, forming an angle of 90 degrees or slightly less; juxta heart-shaped; phallus of even width, curved at 2/3, with strongly sclerotised ventral plate; vesica with numerous denticles and one strong cornutus with large base.

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