rostellum


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Related to rostellum: oncosphere, coracidium

rostellum

[rä′stel·əm]
(biology)
The anterior, flattened region of the scolex of armed tapeworms.
References in periodicals archive ?
A) Scolex containing four round suckers and a rostellum armed with two alternating crowns of hooks (400 [micro]m).
As part of the results of this study: a)- The transfer ofCvbebus from the subtribe Spiranthinae (where it was commonly placed) to the subtribe Stenorhinchidinae, is proposed, based on the floral morphology (the rostellum and viscidiurn structure), b)- two genera are reported for Colombia as new records, each one with one species: Lyroglossa (L.
It has scolex with hooks and suckers and an armed rostellum.
A membrane called the rostellum separates the flower's anther from the stigma making self-pollination impossible," explains the longtime curer and exporter.
The specimen possessed a rudimentary rostellum, a distinguishing characteristic that, according to Rodgers (1941), separated this species from two similar North American species, Anonchotaenia globata and A.