Species Details

Metarranthis duaria

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

Common NameRuddy Metarranthis SeasonalityLate April to early July, most common from mid May to mid June. IdentificationQuite variable in the extent and colouration of wing markings. Reddish brown to brown-grey ground colour with dark AM and PM lines, PM line often bordered proximally with reddish brown. Discal spots black and prominent. Forewing apex often slightly falcate. Very similar to M. warnerae, but overall colour has reddish-brown overtones and patches, while warnerae is entirely brownish-grey. M. warnerae has a smoother, straighter PM line than M. duaria. McGuffin (1987) also states that the presence of dark shading on the inside of the PM line distinguishes warnerae from duaria, but this trait is found in both species in Alberta.

Scientific Name Metarranthis duaria Common Name Ruddy Metarranthis Habitat Deciduous and mixedwood forests and woodlands. Seasonality Late April to early July, most common from mid May to mid June. Identification
Quite variable in the extent and colouration of wing markings. Reddish brown to brown-grey ground colour with dark AM and PM lines, PM line often bordered proximally with reddish brown. Discal spots black and…
Quite variable in the extent and colouration of wing markings. Reddish brown to brown-grey ground colour with dark AM and PM lines, PM line often bordered proximally with reddish brown. Discal spots black and prominent. Forewing apex often slightly falcate. Very similar to M. warnerae, but overall colour has reddish-brown overtones and patches, while warnerae is entirely brownish-grey. M. warnerae has a smoother, straighter PM line than M. duaria. McGuffin (1987) also states that the presence of dark shading on the inside of the PM line distinguishes warnerae from duaria, but this trait is found in both species in Alberta.
Life History
This species is often common in deciduous forest and shrubland, from prairie riparian forest to the central boreal region. The larvae are stout and mottled brown (Wagner et al. 2001), reminiscent of a cutworm…
This species is often common in deciduous forest and shrubland, from prairie riparian forest to the central boreal region. The larvae are stout and mottled brown (Wagner et al. 2001), reminiscent of a cutworm (Noctuidae) rather than the typical geometrid body-plan of mimicking twigs. Wagner et al (2001) note that mature larvae are virtually never collected from trees or shrubs; Prentice (1963) notes a similar situation. Larvae may feed only at night and rest on tree boles or on the ground during the day (Wagner et al. 2001). McGuffin (1987) notes that eggs are laid without adhering to any substrate, and these would undoubtedly end up on forest floor. This species may spend most of its time among leaf litter rather than depending on crypsis on host branches like many geometrids.
Conservation Not of concern. Diet Info Rosaceous shrubs including Prunus, Rosa, Crataegus, Amelanchier, and Holodiscus; also Betula and Populus (McGuffin 1987). Range Southern BC east to Nova Scotia, south to GA, CO, and WA (McGuffin 1987).

Citation

Page Citation for Metarranthis duaria

Page Citation

"Species Details - Metarranthis duaria, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4303. Accessed 17 Jul. 2024.

References

Specimen Information

There are 167 specimens of this Species.

167 results plotted on map in 47 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM7110 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

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

UASM10248 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByMackie, Donald Date Collected1917-05-22

UASM10249 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByMackie, Donald Date Collected1917-05-20

UASM10347 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1920-06-26

UASM10373 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1934-06-08

UASM10399 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Collected ByWhitehouse, F. C. Date Collected1916-05-29

UASM10400 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1918-06-12

UASM10425 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1942-05-22

UASM10522 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1941-05-02

UASM10524 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1942-06-13

UASM10572 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1916-06-16

UASM10598 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Collected ByCrosby, G. C. S. Date Collected1923-06-13

UASM10647 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1915-05-31

UASM10649 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1915-05-12

UASM10650 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1942-05-11

UASM10700 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

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

UASM10722 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1943-05-29

UASM10724 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1943-06-10

UASM10747 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

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

UASM10749 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Collected ByCrosby, G. C. S. Date Collected1923-06-20

UASM10775 - Metarranthis duaria

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1933-05-28

Adult Seasonal Distribution