valvula

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valvula

[′val·vyə·lə]
(biology)
A small valve.
(invertebrate zoology)
One of the small processes forming a sheath for the ovipositor in certain insects.
References in periodicals archive ?
canescens consisted of three pairs of valvulae or gonapophyses.
The increase in diameter from distal to proximal end was very sharp in case of ventral valvulae as compared to that of the dorsal valvulae where it was very gradual.
The dorsal and ventral valvulae or gonapophyses collectively form the egg canal with the help of two functional units called olistheters and two thin longitudinal septa, one from each of the ventral valvulae or gonapophysis for the transport of eggs (Fig.
11), the first valvifer wider with the anterior margin straight, and the apicoventral sculptured area of the first valvulae with maculae smaller, sharp, and clearly separated from each other (Fig.
3); first valvulae sculptured with well delimited maculae joined (Fig.