Species Details

Drepana bilineata

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

Common NameTwo-lined Hooktip SeasonalityAdults have been collected in Alberta from late May through mid-August. IdentificationA medium-size (2.8-3.3 cm wingspan) broad-winged moth with yellow-brown or dark tan forewings and white hindwings. The forewings are drawn out into a prominent curved hook at the apex, have a strongly toothed outer margin, and are crossed by two straight, fine dark brown lines. A small black point indicates the reniform spot. The hindwings are much paler than the forewings, are crossed by a faint median line, and have a narrow dark terminal line. The hooked forewing apex will identify this species as a hooktip, and the toothed forewing margin and pale almost unmarked hindwings will separate it from the other two hooktips, the Arched and Rose Hooktips.

Scientific Name Drepana bilineata Common Name Two-lined Hooktip Habitat Deciduous woodland. Seasonality Adults have been collected in Alberta from late May through mid-August. Identification
A medium-size (2.8-3.3 cm wingspan) broad-winged moth with yellow-brown or dark tan forewings and white hindwings. The forewings are drawn out into a prominent curved hook at the apex, have a strongly toothed outer…
A medium-size (2.8-3.3 cm wingspan) broad-winged moth with yellow-brown or dark tan forewings and white hindwings. The forewings are drawn out into a prominent curved hook at the apex, have a strongly toothed outer margin, and are crossed by two straight, fine dark brown lines. A small black point indicates the reniform spot. The hindwings are much paler than the forewings, are crossed by a faint median line, and have a narrow dark terminal line. The hooked forewing apex will identify this species as a hooktip, and the toothed forewing margin and pale almost unmarked hindwings will separate it from the other two hooktips, the Arched and Rose Hooktips.
Life History
The Two-lined Hooktip is nocturnal and comes to light. The long flight period may indicate at least a partial second brood. The larvae, known as the Warty Birch Caterpillar, is described and illustrated in Ives and…
The Two-lined Hooktip is nocturnal and comes to light. The long flight period may indicate at least a partial second brood. The larvae, known as the Warty Birch Caterpillar, is described and illustrated in Ives and Wong, 1988. It is reported to be a solitary defoliator (Prentice, 1963).
Conservation A fairly common, widespread species; no obvious concerns. Diet Info
No specific Alberta data; in the Prairie Provinces (including Alberta) larvae are reported to feed on birch (Betula), alder (AlnusPopulus tremuloides
No specific Alberta data; in the Prairie Provinces (including Alberta) larvae are reported to feed on birch (Betula), alder (AlnusPopulus tremuloides Range Newfoundland to Vancouver Island. In Alberta it has been collected throughout the Boreal forest region, north to Zama and near Ft. McMurray, south to Winfield.

Citation

Page Citation for Drepana bilineata

Page Citation

"Species Details - Drepana bilineata, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3752. Accessed 07 Oct. 2024.

References

Specimen Information

There are 73 specimens of this Species.

73 results plotted on map in 25 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

BIRD16174 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Arrowwood Collected ByBird, C. D. Date Collected2005-07-30

BIRD17259 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2006-05-19

BIRD17260 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2006-06-19

BIRD17261 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2006-07-01

BIRD17262 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Big Knife Provincial Park Collected ByBird, C. D. Date Collected2006-07-04

BIRD17263 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Big Knife Provincial Park Collected ByBird, C. D. Date Collected2006-07-04

JD0187 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Jasper Collected ByDombroskie, J. J.; Schmidt, C. Date Collected2006-05-18

BIRD20427 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Arrowwood Collected ByBird, C. D. Date Collected2007-06-01

BIRD20428 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Arrowwood Collected ByBird, C. D. Date Collected2007-06-01

BIRD20429 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2007-06-15

BIRD21744 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2008-05-31

BIRD21745 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2008-06-20

BIRD21746 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2008-07-20

BIRD31180 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Rimbey Collected ByBird, C. D. Date Collected2009-07-11

BIRD31181 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Rimbey Collected ByBird, C. D. Date Collected2009-07-12

BIRD31182 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Rimbey Collected ByBird, C. D. Date Collected2009-07-12

UASM188133 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park Collected ByDombroskie, J. J.; Schmidt, C. Date Collected2006-05-18

UASM188134 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gabriola Island Collected ByAnweiler, G. Date Collected1988-05-26

BIRD33503 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2010-05-15

BIRD33504 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Medicine Lake Recreation Area Collected ByBird, C. D. Date Collected2010-06-27

BIRD34959 - Drepana bilineata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2011-05-21

Adult Seasonal Distribution