Cedar Creek
Ecosystem Science Reserve

Insects of Cedar Creek



(Fruit Flies)

(Table of Species)

The Picture-winged Fruit Flies (280 NA spp) are conspicuous and fairly abundant in CCESR old fields. More than 15 species have been collected. Larvae are fruit and seed eaters, leaf miners, or gall formers. Adults are most commonly encountered around goldenrods. Eurosta solidaginis forms spherical stem galls on Solidago canadensis and Solidago gigantea. These flies emerge in late spring (May) and are seldom collected in sweeps. Tim Craig, Joanne Itame and John Horner have conducted extensive studies on these 'sibling' species. Eurosta comma is taken in small numbers in August from several fields where it forms root galls on Solidago missouriensis. Other large but relatively uncommon Tephritids collected include: Eutreta noveboracensis, Icterica sp, Tephritis subpura?, Rhagoletis sp (apple), and Stenopa vulnerata. More common are some of the smaller flies in this family. Euaresta bella is abundandant on Solidago blooms in mid to late summer. Dioxyna piccicola, Euarestoides abstersus, and Trupanea actinobola are also fairly common on Solidago. Less frequently collected are Neotephritis finalis, Paroxyna albiceps, Urophora sp and Neaspilota sp.

webmaster@cedarcreek.umn.edu Last updated May, 2000