Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

proboscis, proboscises, proboscides

Fly proboscis
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
No Taxon (Glossary)
No Taxon (P)
No Taxon proboscis, proboscises, proboscides
Pronunciation
pro-BOSS-iss
Explanation of Names
From Greek proboskis, trunk (as of an elephant) (1). That word from roots pro, before and boskein to feed (Wikipedia).
Identification
proboscis noun, plural proboscises or proboscides - a modified mouthpart used for siphoning liquids. When present in flies (diptera), it is a modified labium. In butterflies and moths (lepidoptera), and some other groups, it is a modification of the maxillae.

Photos showing insects with a prominent proboscis:

Print References
Gordh, A Dictionary of Entomology, p. 734 (1)
Internet References
Mouthparts and Moving--Gary Brewer, North Dakota State University (excellent illustrations and descriptions)
Works Cited
1.A Dictionary of Entomology
George Gordh, David H. Headrick. 2003. CABI Publishing.