Tree-pest
Guides
Corythucha confraterna
sycamore lace bug, Western Sycamore Lace Bug
Corythucha confraterna, commonly known as the sycamore lace bug, is a species of lace bug in the family Tingidae. It is found in Central America and North America. The species is active from spring to autumn, feeding on plant sap and causing leaf stippling, wilting, and premature leaf drop. It has been observed feeding on sycamore, ash, hickory, and mulberry trees. During winter, adults shelter in protected locations near their food sources.
Parthenolecanium
soft scales, lecanium scales
Parthenolecanium is a genus of soft scale insects in the family Coccidae. These hemipterans are dome-shaped, sap-feeding pests of woody plants including oaks, fruit trees, and grapevines. Several species are significant urban tree pests, notably P. quercifex (oak lecanium scale) and P. corni (European fruit lecanium scale). The genus exhibits variation in reproductive mode: some species reproduce by parthenogenesis, while P. corni reproduces sexually (gamogenesis). Many species have been documented as vectors of grapevine viruses.
Phylloxera subelliptica
Phylloxera subelliptica is a gall-forming insect in the family Phylloxeridae, closely related to aphids. Like other phylloxerans, this species induces abnormal plant growths (galls) on host plants through chemical secretions that manipulate plant tissue development. The species was described by Shimer in 1869. Phylloxerans typically have complex life cycles involving multiple generations and both sexual and parthenogenetic reproduction.