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A Looper Moth (Euchlaena milnei)


Overview

There is no overview information available for that species.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - both state and federal - and the rank (S and G Ranks) for A Looper Moth (Euchlaena milnei). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where occurrences of this species meet NHI data standards and is not meant as a comprehensive map of all observations.

Note: Species recently added to the NHI Working List may temporarily have blank occurrence maps.


Euchlaena milnei is not tracked by the Wisconsin Natural Heritage Inventory Program at this time (this species is not on the NHI Working List).
Summary Information
State Statusnone
Federal Status in Wisconsinnone
State RankSU
Global RankG2G4
Tracked by NHIW
WWAP r-SIN

Species guidance


Identification: A ochre yellow colored moth with the inner half of the wings dusted with brown. This is bordered by a chocolate brown band and the outermost portion of the wings is violet gray. Yellow triangles are present at the apex of the forewings. Distinguished from similar Euchlaena by the forewing antemedial line acutely angled outward on the cubital vein to its fork. Others show barely a tooth at this point.

Similar Species: Euchlaena amoenaria, the Deep Yellow Euchlaena, is similarly marked with yellow patches at the wing tips.

Habitat: Hardwood forest habitat on rocky, limestone bluffs along major rivers may be the adult habitat of this species. Some collection sites suggest riparian forest habitats and the possibility of willow as the larval foodplant makes it more likely that lowland forest may be the habitat of immature stages. The Sauk Co site is at the base of a Wisconsin River bluff. The Grant Co. site is on top of a Mississippi River bluff.

Host Plant: In Virginia, larvae have been reared on willows, but there is no evidence that this is the normal foodplant. Larvae of most species in this genus are polyphagous on deciduous trees and shrubs. The foodplant used in spring might not necessarily be the same as the early instar foodplant of the fall. Ninebark, Physocarpus opulifolius, has been suggested for Wisconsin sites (Schweitzer, 1989).

Associated Species: Taken with Lytrosis permagnaria in Virginia. In Wisconsin, associated with other ninebark feeding Geometrids: Lygris molliculata and Itame abruptata.

State Distribution: Sauk and Grant Counties in the Driftless Area along the Mississippi and Wisconsin Rivers.

Global Distribution: Known from mountains of Virginia, West Virginia, southern Ohio and North Carolina. Disjunct to near rivers in Illinois and Wisconsin. May be confined by topography and climate outside the reach of the last Wisconsin glaciation (Balogh, 1989).

Status Comments: Rarely encountered in a wide, but disjunct, range. Only two Virginia sites and one in North Carolina are recent. West Virginia sites may be recent but probably have been sprayed since.

Rationale for Species Listing and Threats: Sites subject to gypsy moth spraying (for now including with Btk) cannot be regarded as protected. Gypsy moth spraying has potential to impact this species since larvae feed approximately July-September and May-June. Threat from Dimilin use would be extremely high, i.e. massive to total mortality of larvae for two generations so occurrence presumed extirpated.

Phenology: Adults occur in late June to mid July in Wisconsin.

Life and Natural History: Development is probably similar to other Euchlaena species: feeding through the fall up to the mid-instar larval stage, overwintering as late instar larvae in the leaf litter with the larvae feeding again in the spring, and pupating in early to mid-June. Overwinter probably in the litter, maybe on the plant.

Survey Guidelines: Use lights to collect adults. Also taken with bait in Wisconsin.

Inventory, Monitoring and Research Needs: Inventory for new populations as the basis of the species in the state is confined to only two sites at present. Find the larval foodplant. If good populations are found, a site survey summary carefully listing woody plants is needed. It would be extremely useful to learn whether gyspy moth defoliation itself would pose any threat (would depend on foodplant).

Photos/Video

Photos


A Looper Moth

Photo © Les Ferge.


Last revised: Thursday, May 04, 2017