Palpus

Pal'pus noun ; plural Palpi . [ New Latin See Palp .] (Zoology) A feeler; especially, one of the jointed sense organs attached to the mouth organs of insects, arachnids, crustaceans, and annelids; as, the mandibular palpi , maxillary palpi , and labial
Found on http://www.encyclo.co.uk/webster/P/10

palpus

Origin: NL. See Palp. ... <zoology> A feeler; especially, one of the jointed sense organs attached to the mouth organs of insects, arachnids, crustaceans, and annelids; as, the mandibular palpi, maxillary palpi, and labial palpi. The palpi of male spiders serve as sexual organs. Called also palp. ... Source: Websters Dictionary ... (01 Mar 19
Found on http://www.mondofacto.com/facts/dictionary?palpus

Palpus

• (n.) A feeler; especially, one of the jointed sense organs attached to the mouth organs of insects, arachnids, crustaceans, and annelids; as, the mandibular palpi, maxillary palpi, and labial palpi. The palpi of male spiders serve as sexual organs. Called also palp. See Illust. of Arthrogastra and Orthoptera.
Found on http://thinkexist.com/dictionary/meaning/palpus/

palpus

palpus, palp (s), palpi (pl) A feeler; especially, one of the jointed sense organs attached to the mouth organs of insects, arachnids, crustaceans, and annelids; such as, the mandibular palpi, maxillary palpi, and labial palpi.
Found on http://www.wordinfo.info/words/index/info/view_unit/1562/2

Palpus

Portrait photo over 100 years old, public domain. ...
Found on http://en.wikipedia.org/wiki/Palpus

palpus

a feeler; especially, one of the jointed sense organs attached to the mouth organs of insects
Found on http://www.kerbtier.de/Pages/Glossar/enGlossar.html
No exact match found