Family common name: common sawflies
Genus: Taxonus Hartig, 1837
The Tenthredinidae are the most species-rich family and are found throughout the world, in all continents but Antarctica. They are known as the “common sawflies.” They can generally be recognized by a cylindrical body and long, segmented antennae. Otherwise, they come in a variety of colors, sizes, and forms (Goulet 1992).
Sawflies in the Allantinae subfamily are mostly black and shining, sometimes with other colors. They have agricultural importance as some species are pests on cultivated and ornamental plants (Smith 1979a). They can be distinguished from other subfamilies by wing venation (Smith 2003a).
Taxonus are medium-sized, about 5–10 mm in length, and generally black and orange in color. The genus is species-rich worldwide. (Smith 1979a).
Taxonus can be confused with similar species in the subfamily Allantinae or tribe Allantini. It can be distinguished from most other genera by the asymmetrical mandibles, deep circular clypeus emargination, presence of cell M in the hind wing, and male peripheral vein I hind wing (Smith 1979a).
In North America, Taxonus feeds on species of Fragaria (strawberry) and Rubus (blackberry, raspberry) (Smith 1979a).
Specific biology for Taxonus species is unknown. Larvae feed singly on the underside of the leaf. At maturity prepupae burrow into the soil beneath the host to pupate. Taxonus pallicoxus and T. pallidicornis are bivoltine (Smith 1979a).
North America: Taxonus occurs mainly east of the Mississippi River, south to Texas and Florida. There are a few collections of T. pallicoxus in Alberta and British Columbia (Smith 1979a).
Map data from: GBIF.org (29 October 2019) GBIF Occurrence Download Taxonus
Details about data used for maps can be found here.