Species Details

Macaria bitactata

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

Common NameShort-lined Granite SeasonalityFlies in July and August, peaking in mid July. IdentificationA grey geometrid with bold, black transverse lines on the forewing; the four dark costal wedges typical of the genus continue as AM, PM and median lines, the median line broadest and incorporating the discal spot. AM and PM line sometimes broken. Hindwing slightly paler, speckled grey with a faint (sometimes absent) PM line and discal spot, slightly darker marginal area. Sexes not dimorphic. Similar to M. decorata, which has a speckled, not uniform grey, forewing ground colour, and lacks the thickened median line. Members of the genus Digrammia have a dark patch midway down the forewing submarginal area, absent in M. bitactata.

Scientific Name Macaria bitactata Common Name Short-lined Granite Habitat Moist open woods and shrubby areas. Seasonality Flies in July and August, peaking in mid July. Identification
A grey geometrid with bold, black transverse lines on the forewing; the four dark costal wedges typical of the genus continue as AM, PM and median lines, the median line broadest and incorporating the discal spot. AM…
A grey geometrid with bold, black transverse lines on the forewing; the four dark costal wedges typical of the genus continue as AM, PM and median lines, the median line broadest and incorporating the discal spot. AM and PM line sometimes broken. Hindwing slightly paler, speckled grey with a faint (sometimes absent) PM line and discal spot, slightly darker marginal area. Sexes not dimorphic. Similar to M. decorata, which has a speckled, not uniform grey, forewing ground colour, and lacks the thickened median line. Members of the genus Digrammia have a dark patch midway down the forewing submarginal area, absent in M. bitactata.
Life History The immature stages are detailed by McGuffin (1972). Adults come to light. Conservation No obvious concerns. Diet Info Larvae feed on alder (Alnus sp.) and gooseberry (Ribes sp.) (Prentice 1963). Range Newfoundland west to the Yukon and B.C., south to California (McGuffin 1972).

Citation

Page Citation for Macaria bitactata

Page Citation

"Species Details - Macaria bitactata, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3881. Accessed 25 May. 2024.

Authorship

Name Schmidt, B. C.
Role species page author
Date 2003-04

References

Specimen Information

There are 58 specimens of this Species.

58 results plotted on map in 22 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM9340 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lloydminster Collected ByBowman, K. Date Collected1942-07-18

UASM9347 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Brule Date Collected1917-07-31

UASM9351 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lloydminster Collected ByBowman, K. Date Collected1942-07-20

UASM9356 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Cadomin Collected ByBowman, K. Date Collected1920-08-24

UASM9359 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1922-07-24

UASM9365 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lloydminster Collected ByBowman, K. Date Collected1942-07-20

UASM9366 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Calgary Collected BySalt, George Date Collected1920-08-06

UASM9369 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lloydminster Collected ByBowman, K. Date Collected1942-07-29

UASM9374 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lloydminster Collected ByBowman, K. Date Collected1942-07-20

UASM9375 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, High River Collected ByMackie, Donald Date Collected1922-07-15

BIRD1620 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Arrowwood Collected ByBird, C. D. Date Collected2000-08-03

BIRD1621 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nevis Collected ByBird, C. D. Date Collected2001-07-20

BIRD1622 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nevis Collected ByBird, C. D. Date Collected2001-07-20

BIRD1623 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Buffalo Lake Provincial Recreation Area Collected ByBird, C. D. Date Collected2001-07-15

BIRD1624 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nevis Collected ByBird, C. D. Date Collected2001-07-20

BIRD1625 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nevis Collected ByBird, C. D. Date Collected2001-07-20

BIRD1626 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nevis Collected ByBird, C. D. Date Collected2002-07-07

BIRD1627 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nevis Collected ByBird, C. D. Date Collected2002-07-22

BIRD1628 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nevis Collected ByBird, C. D. Date Collected2002-08-06

BIRD1629 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Buffalo Lake Provincial Recreation Area Collected ByBird, C. D. Date Collected2003-07-27

BIRD1630 - Macaria bitactata

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Buffalo Lake Provincial Recreation Area Collected ByBird, C. D. Date Collected2003-07-27

Adult Seasonal Distribution