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Species Details
Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
Common NameObtuse Euchlaena
SeasonalityAdults fly in early June to early July.
IdentificationThe ground colour varies from tan to dark chestnut brown, with a conspicuous serrate hindwing edge. Black discal spots, small but well-defined, Am and PM line faint. The combination of a strongly serrate hindwing margin and well-defined discal spots will serve to separate E. obtusaria from other Euchlaena.
Scientific Name
Euchlaena obtusaria
Common Name
Obtuse Euchlaena
Habitat
In Alberta, found only in mixedwood forest of the southern boreal region.
Seasonality
Adults fly in early June to early July.
Identification
The ground colour varies from tan to dark chestnut brown, with a conspicuous serrate hindwing edge. Black discal spots, small but well-defined, Am and PM line faint. The combination of a strongly serrate hindwing…
The ground colour varies from tan to dark chestnut brown, with a conspicuous serrate hindwing edge. Black discal spots, small but well-defined, Am and PM line faint. The combination of a strongly serrate hindwing margin and well-defined discal spots will serve to separate E. obtusaria from other Euchlaena.
Life History
Up to 230 eggs are laid, hatching in only three to four days (McGuffin 1981). The larva is an excellent twig mimic, striped with pale and brown and bearing two short dorsal protuberances on the fifth abdominal segment…
Up to 230 eggs are laid, hatching in only three to four days (McGuffin 1981). The larva is an excellent twig mimic, striped with pale and brown and bearing two short dorsal protuberances on the fifth abdominal segment (Wagner et al. 2001). The larva overwinters, likely in thew fifth instar (McGuffin 1981).
Conservation
Apparently rare in Alberta; status uncertain.
Diet Info
Larval hosts may include birch(Betula)and cherry(Prunus) in Alberta; however, due to possible confusion of this species with E. muzaria (Wagner et al 2001), host records need to be confirmed.
Range
East-central and southern Alberta east to Nova Scotia, south to Florida and Texas. This species may actually be confined to the eastern US, with Canadian populations referable to E. muzaria (Wagner et al. 2001).
Citation
Page Citation for Euchlaena obtusaria
Page Citation
"Species Details - Euchlaena obtusaria, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4202/9-56265. Accessed 17 May. 2024.
References
Author
Wagner, D.L, D.L. Ferguson, T.L. McCabe and R.C. Reardon
Title
Geometroid Caterpillars of Northeastern and Appalachian Forests
Publication Date
2001
Pages
239
Author
McGuffin, W. C.
Title
Guide to the Geometridae of Canada (Lepidoptera): II. Subfamily Ennominae. 3
Publication Date
1981
Series Title
Memoirs of the Entomological Society of Canada
Volume
117
Pages
153
Specimen Information
There are 48 specimens of this Species.
UASM7059 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Tofield
Collected BySchmidt, B. C.
Date Collected1999-06-29
UASM9876 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lloydminster
Collected ByBowman, K.
Date Collected1940-07-05
UASM43240 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta
Collected ByLawrie, D.
Date Collected1998-06-10
UASM24679 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByAnweiler, G. G.
Date Collected1998-06-21
BIRD3285 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2000-07-11
BIRD3286 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2000-07-11
BIRD3287 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2000-07-12
BIRD3288 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, McKenzie Crossing
Collected ByBird, C. D.
Date Collected2000-07-16
BIRD3289 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, McKenzie Crossing
Collected ByBird, C. D.
Date Collected2000-07-16
BIRD3290 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2000-07-24
BIRD3291 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Rochon Sands Provincial Park
Collected ByBird, C. D.
Date Collected2001-07-03
BIRD3292 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Rochon Sands Provincial Park
Collected ByBird, C. D.
Date Collected2001-07-03
BIRD3293 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2001-07-06
BIRD3294 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2001-07-06
BIRD3295 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2001-07-06
BIRD3296 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Winfield
Collected ByBird, C. D.
Date Collected2001-07-11
BIRD3297 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2002-07-03
BIRD3298 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Erskine
Collected ByBird, C. D.
Date Collected2002-07-03
BIRD3299 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Stettler
Collected ByBird, C. D.
Date Collected2002-07-06
BIRD3300 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Nevis
Collected ByBird, C. D.
Date Collected2002-07-07
BIRD3301 - Euchlaena obtusaria
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Red Deer
Collected ByBird, C. D.
Date Collected2002-07-10