
The stylostome is a funnel or channel-like structure formed by trombiculid mites. The formation is not caused by the mouthparts of the mites, because these mites do not have needle-like mouthparts as other hematophagous animals have been known to have, but have chelicerae, which only pierce the skin. The tube is formed by the digestive enzymes in ...
Found on
http://en.wikipedia.org/wiki/Stylostome

The tube formed by the host as a result of the feeding of a chigger; in secreting salivary fluids, the chigger partially digests skin tissues, which induces the host to form a proteinaceous tube walling off the injury.
Found on
http://www.earthlife.net/insects/glossary.html

Hardened, tube-like structure secreted by a feeding chigger mite.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
No exact match found.