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n. pl. haus·tel·la (hô-stĕl′ə)
A proboscis in certain insects that is used for sucking liquids.

[New Latin, diminutive of Latin haustrum, scoop on a water wheel, from haurīre, to draw up.]

haus·tel′late (hô-stĕl′ĭt, hô′stə-lāt′) adj.
References in periodicals archive ?
The haustellate mouthparts of pentatomid species pierce the larval integument and largely bypass the terpenoidladen coating to access the internal contents of the larval prey.