Lycia rachelae - (Hulst, 1896)
Twilight Moth
Taxonomic Status: Accepted
Unique Identifier: ELEMENT_GLOBAL.2.111264
Element Code: IILEU1S030
Informal Taxonomy: Animals, Invertebrates - Insects - Butterflies and Moths - Other Moths
 
Kingdom Phylum Class Order Family Genus
Animalia Mandibulata Insecta Lepidoptera Geometridae Lycia
Genus Size: B - Very small genus (2-5 species)
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Concept Reference
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Concept Reference: Hodges, R.W. et al., eds. 1983. Check List of the Lepidoptera of America North of Mexico. E.W. Classey Limited and The Wedge Entomological Research Foundation, London. 284 pp.
Concept Reference Code: B83HOD01HQUS
Name Used in Concept Reference: Lycia rachelae
Taxonomic Comments: Two very close Palearctic relatives, no obvious differences between eastern and western populations.
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 15Feb2017
Global Status Last Changed: 15Feb2017
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G5 - Secure
Reasons: Undoubtedly widely overlooked northward at least. Just a few isolated occurrences in New England and Pennsylvania, but apparently widespread in western and possibly eastern boreal Canada. Secure in Canada.
Nation: United States
National Status: NNR
Nation: Canada
National Status: N5 (15Feb2017)

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Maine (S1), Massachusetts (S1), New Hampshire (S2), Pennsylvania (S1)
Canada Alberta (S4S5), British Columbia (S4S5), Manitoba (S3S4), Quebec (SNR), Saskatchewan (S4S5), Yukon Territory (SU)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent: >2,500,000 square km (greater than 1,000,000 square miles)
Range Extent Comments: Western Canada to Colorado, disjunct in southern Maine to eastern Massachusetts, and Poconos of Pennsylvania. Recent report (Handfield, 1999) from northern Quebec raises the possibility of a major additional range in subarctic canada.

Number of Occurrences: 81 to >300

Population Size: 10,000 to >1,000,000 individuals
Population Size Comments: Not rare in western Canada; locally quite numerous in NH.

Other NatureServe Conservation Status Information

Protection Needs: All currently known eastern US EOs should be protected.

Distribution
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Global Range: (>2,500,000 square km (greater than 1,000,000 square miles)) Western Canada to Colorado, disjunct in southern Maine to eastern Massachusetts, and Poconos of Pennsylvania. Recent report (Handfield, 1999) from northern Quebec raises the possibility of a major additional range in subarctic canada.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.

Map unavailable!:
Distribution data for U.S. states and Canadian provinces is known to be incomplete or has not been reviewed for this taxon.
Endemism: occurs (regularly, as a native taxon) in multiple nations

U.S. & Canada State/Province Distribution
United States MA, ME, NH, PA
Canada AB, BC, MB, QC, SK, YT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
MA Essex (25009), Worcester (25027)
NH Carroll (33003), Merrimack (33013)
PA Lackawanna (42069), Monroe (42089)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
01 Saco (01060002)+, Merrimack (01070002)+, Nashua (01070004)+, Merrimack (01070006)+
02 Lackawaxen (02040103)+, Lehigh (02040106)+, Upper Susquehanna-Lackawanna (02050107)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Moth, Geometridae.
Non-Migrant: N
Locally Migrant: N
Long Distance Migrant: N
Habitat Comments: In n.e. U.S., usually in pitch pine/scrub oak barrens. Elsewhere, apparently somewhat variable habitats.
Economic Attributes Not yet assessed
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Management Summary
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Biological Research Needs: Need more precise info. on habitat needs in eastern U.S.
Population/Occurrence Delineation
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Use Class: Not applicable
Minimum Criteria for an Occurrence: No range wide SPECS are possible since the habitats in the main high boreal, subarctic and western mountain range are unclear. MInimally a collection or photo of an adult or larva in a wooded situation. However for relict eastern US occurrences, specifically including all documented since 1980 in Maine, New Hampshire, Massachusetts and Pennyslvania, the Pine Barrens Moths SPECS are highly recommended and it is in these places where the species is tracked. As far as can be determined this species is or was widespread and rather common in these few barrens and apparently not in other habitats in the area, although with wind-born polyphagous larvae EOs must extend to some extent into surrounding woods.
Date: 09Feb2004
Author: Schweitzer, Dale F.
Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 30Mar2008
NatureServe Conservation Status Factors Author: Schweitzer, D.F.
Element Ecology & Life History Edition Date: 12Jan2000

Zoological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).

References
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  • General Status 2015, Environment Canada. 2014. Manitoba moth species list and ranks as recommended by expert.

  • Handfield, Louis, 1999. Le Guide des Papillons du Quebec, Scientific Version. Broquet Inc, Boucherville, Quebec, Canada, 155pp + plates.

  • Hodges, R.W. et al., eds. 1983. Check List of the Lepidoptera of America North of Mexico. E.W. Classey Limited and The Wedge Entomological Research Foundation, London. 284 pp.

  • Lafontaine, J.D. and D.M. Wood. 1997. Butterflies and moths (Lepidoptera) of the Yukon. Pp. 723-785 in: Danks, H.V. and J.A. Downes (Eds.). Insects of the Yukon. Biological survey of Canada (terrestrial arthropods), Ottawa, ON.

  • Schweitzer, D. F., M. C. Minno, and D. L. Wagner. 2011. Rare, declining, and poorly known butterflies and moths (Lepidoptera) of forests and woodlands in the eastern United States. USFS Forest Health Technology Enterprise Team, Technology Transfer Bulletin FHTET-2011-01. 517 pp.

  • Scoble, M. J. (ed.), M. S. Parsons, M. R. Honey, L. M. Pitkin, and B. R. Pitkin. 1999. Geometrid moths of the world: a catalogue. Volumes 1 and 2: 1016 pp. + index 129 pp. CSIRO Publishing, Collingwood, Victoria, Australia.

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