What is "haustellum"

Haustellum \Haus*tel"lum\ (h[add]s*t[e^]l"l[u^]m), n.; pl. Haustella (-l[.a]). [NL.] (Zo["o]l.) The sucking proboscis of various insects. See Lepidoptera, and Diptera.

n. A sucking organ, in the form of a proboscis, in many insects and crustaceans

Haustellum is a genus of medium-sized sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails. Like many other genera within the Muricidae, the genus has been redefined several times.

Ponder & Vokes (1988) and Vokes (1990) included American and Indo-Pacific species in Haustellum, which differs from Murex sensu stricto by lacking a labral spine.

Petuch (1994) introduced Vokesimurex for the American long-canalled Haustellum sensu Vokes (1990), such as Murex messorius Sowerby, 1841.

Houart (1999) transferred 14 Indo-Pacific species and three subspecies of Haustellum in the genus Vokesimurex.

As currently defined, Haustellum is represented by eight to nine species. Members of Haustellum generally differ from those of Vokesimurex in having a globose and low-spired shape, a more rounded aperture, a smooth columella, a less deep anal notch, and no cord spine.