''Barolineocerus chiasmus'' is a species of leafhopper native to

French Guiana French Guiana ( or ; french: link=no, Guyane ; gcr, label=French Guianese Creole, Lagwiyann ) is an overseas department/region and single territorial collectivity of France on the northern Atlantic coast of South America in the Guianas. ...

. The length is . It is named for the thin, sword-like protrusion on the last segment of the abdomen on the male. It is distinguished from other species in the genus on the basis of the aforementioned protrusion.

References

Insects described in 2008 Hemiptera of South America Eurymelinae {{Cicadellidae-stub