New York Natural Heritage Program
Fringed Dart
Eucoptocnemis fimbriaris (Guenée, 1852)

Identifying Characteristics [-]
The fringed dart has two color phases. Its forewings can be light gray or red. Wings of both colors have similar markings. The antemedial (AM) and postmedial (PM) lines are composed of black and white dots. The reniform spot is yellowish, with blackish edges, and is surrounded by dark gray scaling. The terminal line consists of black spots. Black patches are along the anterior margin, at the top of the AM and PM lines. The hind wings are dirty white, with grayish-brown shading and a faint median line consisting of dark dots. The wingspan is 25-32 mm (Covell 1984). Caterpillars of darts are robust and smooth. Within any given dart species, caterpillars tend to exhibit variable colors and patterns (Wagner et al. 2008).

Best Life Stage for Proper Identification [-]
The adult is the best life stage for identification.

Behavior [-]
The life history of the fringed dart is poorly known. The species has one brood each year (Covell 1984). Larvae (caterpillars) tunnel underground during the day. Larvae overwinter. Pupation occurs in a chamber underground (Wagner et al. 2008).

Diet [-]
The larval foodplants are unknown, but larvae probably feed on a variety of forbs and low plants such as grasses and herbs (Covell 1984; Wagner et al. 2008; NatureServe 2010).
Fringed Dart Images
click to enlarge
The Best Time to See
The best time to see the fringed dart is during its flight season. In New York State, it has been captured flying from late September until early October.
Present Reproducing
The time of year you would expect to find Fringed Dart present (blue shading) and reproducing (orange shading) in New York.