Species Details

Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameThe Small Engrailed SeasonalityAdults fly in spring, peaking in May. IdentificationA light gray moth with indistinct mottling and poorly-defined AM, median and PM lines. Recognizable by the very short male antennal pectinations and the dark patch in the subterminal line in the middle of the forewing, opposite the discal cell.

Scientific Name Ectropis crepuscularia Common Name The Small Engrailed Habitat Boreal mixedwood and aspen forests. Seasonality Adults fly in spring, peaking in May. Identification
A light gray moth with indistinct mottling and poorly-defined AM, median and PM lines. Recognizable by the very short male antennal pectinations and the dark patch in the subterminal line in the middle of the…
A light gray moth with indistinct mottling and poorly-defined AM, median and PM lines. Recognizable by the very short male antennal pectinations and the dark patch in the subterminal line in the middle of the forewing, opposite the discal cell.
Life History
Eggs are laid in groups of 10 to 20 in bark crevices and under moss on tree boles, hatching in about a week. Young larve feed on understory plants, while older larvae move into the tree canopy (Morris 1970). The pupa…
Eggs are laid in groups of 10 to 20 in bark crevices and under moss on tree boles, hatching in about a week. Young larve feed on understory plants, while older larvae move into the tree canopy (Morris 1970). The pupa overwinters in the duff layer on the ground. The twig-mimicking larvae (Saddleback Looper) have occasionally caused noticeable defoliation in BC (McGuffin 1977). A detailed larval description is given by McGuffin (1977) and the mature larva is illustrated by Wagner et al. (2001).
Conservation Not of concern. Diet Info
A wide range of host plants are used by the larvae, the most common species recorded by Prentice (1963) being conifers including hemlock(Tsuga), fir (Abies), douglas-fir (Pseudotsuga), larch (Larix), cedar(Thuja) and…
A wide range of host plants are used by the larvae, the most common species recorded by Prentice (1963) being conifers including hemlock(Tsuga), fir (Abies), douglas-fir (Pseudotsuga), larch (Larix), cedar(Thuja) and spruce (Picea).
Range Found across most of temparate North America from Alaska to Florida. Also occurs in the Palaearctic region (McGuffin 1977).

Citation

Page Citation for Ectropis crepuscularia

Page Citation

"Species Details - Ectropis crepuscularia, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3891. Accessed 24 May. 2024.

Authorship

Name Schmidt, B. C.
Role species page author
Date 2003-08

References

Specimen Information

There are 108 specimens of this Species.

108 results plotted on map in 20 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM7013 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Tofield Collected BySchmidt, B. C. Date Collected1999-05-27

UASM7283 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Tofield Collected BySchmidt, B. C. Date Collected2000-05-25

UASM9652 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1919-05-05

UASM9653 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1918-05-03

UASM9656 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Collected ByWhitehouse, F. C. Date Collected1916-05-16

UASM9657 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1917-05-07

UASM9658 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1917-05-11

UASM9659 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1918-05-10

UASM9660 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1919-05-11

UASM9662 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1918-04-21

UASM9663 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByCarr, Frederick S. Date Collected1910-04-30

UASM9664 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1918-05-06

UASM9665 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1918-06-08

UASM9667 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1928-05-14

UASM9668 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1918-04-26

UASM9669 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1915-05-04

UASM9670 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1918-05-05

UASM9671 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1917-06-14

UASM9672 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1918-05-02

UASM9675 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1918-04-19

UASM43326 - Ectropis crepuscularia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Wagner Natural Area Collected ByLawrie, D. Date Collected1999-05-06

Adult Seasonal Distribution