Isabella Tiger Moth (Pyrrharctia isabella)
no rights reserved, uploaded by Chrissy McClarren and Andy Reago · CC0 1.0 (opens in a new tab) · iNaturalist (opens in a new tab)
Butterflies and mothsIn Cuyahoga County, Ohio

Isabella Tiger Moth

Pyrrharctia isabella Smith, J.E., 1797

Isabella Tiger Moth in all of Ohio
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Family
Erebidae
Genus
Pyrrharctia
Near Cuyahoga County

Range

Where it is recorded

Season shown in 2 of Ohio's 88 counties. Explore Ohio

  • No result yet (6)
  • Recorded, too few records for a result (54)
  • Recorded, season not shown (26)
  • Season shown (2)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Isabella Tiger Moth by Ohio county: records and mapped range
CountyRecords
Adams CountyRecorded, too few records for a result
Allen County37 · Recorded, season not shown
Ashland CountyRecorded, too few records for a result
Ashtabula CountyRecorded, too few records for a result
Athens County59 · Recorded, season not shown
Auglaize CountyNo qualifying records yet
Belmont CountyRecorded, too few records for a result
Brown CountyNo qualifying records yet
Butler County78 · Recorded, season not shown
Carroll CountyRecorded, too few records for a result
Champaign CountyRecorded, too few records for a result
Clark CountyRecorded, too few records for a result
Clermont County33 · Recorded, season not shown
Clinton CountyRecorded, too few records for a result
Columbiana CountyRecorded, too few records for a result
Coshocton CountyRecorded, too few records for a result
Crawford CountyRecorded, too few records for a result
Cuyahoga County243 · Season shown
Darke CountyRecorded, too few records for a result
Defiance CountyNo qualifying records yet
Delaware County38 · Recorded, season not shown
Erie County41 · Recorded, season not shown
Fairfield County30 · Recorded, season not shown
Fayette CountyRecorded, too few records for a result
Franklin County161 · Recorded, season not shown
Fulton CountyRecorded, too few records for a result
Gallia CountyRecorded, too few records for a result
Geauga County31 · Recorded, season not shown
Greene County59 · Recorded, season not shown
Guernsey CountyRecorded, too few records for a result
Hamilton County129 · Recorded, season not shown
Hancock CountyRecorded, too few records for a result
Hardin CountyRecorded, too few records for a result
Harrison CountyRecorded, too few records for a result
Henry CountyRecorded, too few records for a result
Highland County24 · Recorded, season not shown
Hocking County61 · Recorded, season not shown
Holmes CountyRecorded, too few records for a result
Huron CountyRecorded, too few records for a result
Jackson CountyNo qualifying records yet
Jefferson CountyRecorded, too few records for a result
Knox CountyRecorded, too few records for a result
Lake County104 · Recorded, season not shown
Lawrence CountyRecorded, too few records for a result
Licking County55 · Recorded, season not shown
Logan CountyRecorded, too few records for a result
Lorain County63 · Recorded, season not shown
Lucas County100 · Recorded, season not shown
Madison CountyRecorded, too few records for a result
Mahoning CountyRecorded, too few records for a result
Marion CountyRecorded, too few records for a result
Medina County112 · Recorded, season not shown
Meigs CountyRecorded, too few records for a result
Mercer CountyRecorded, too few records for a result
Miami CountyRecorded, too few records for a result
Monroe CountyRecorded, too few records for a result
Montgomery County48 · Recorded, season not shown
Morgan CountyRecorded, too few records for a result
Morrow CountyRecorded, too few records for a result
Muskingum CountyRecorded, too few records for a result
Noble CountyRecorded, too few records for a result
Ottawa County40 · Recorded, season not shown
Paulding CountyRecorded, too few records for a result
Perry CountyRecorded, too few records for a result
Pickaway CountyNo qualifying records yet
Pike CountyRecorded, too few records for a result
Portage County71 · Season shown
Preble CountyRecorded, too few records for a result
Putnam CountyRecorded, too few records for a result
Richland County43 · Recorded, season not shown
Ross CountyRecorded, too few records for a result
Sandusky CountyRecorded, too few records for a result
Scioto CountyRecorded, too few records for a result
Seneca CountyRecorded, too few records for a result
Shelby CountyRecorded, too few records for a result
Stark County81 · Recorded, season not shown
Summit County267 · Recorded, season not shown
Trumbull CountyRecorded, too few records for a result
Tuscarawas CountyRecorded, too few records for a result
Union CountyRecorded, too few records for a result
Van Wert CountyNo qualifying records yet
Vinton CountyRecorded, too few records for a result
Warren County28 · Recorded, season not shown
Washington CountyRecorded, too few records for a result
Wayne County40 · Recorded, season not shown
Williams CountyRecorded, too few records for a result
Wood County26 · Recorded, season not shown
Wyandot CountyRecorded, too few records for a result

No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.

Season

When it is recorded

In Cuyahoga County

Early April to late November, middle week Oct 4–10

Show over the bars
Recording in Cuyahoga County · records of all species each week, 92,154 in all

Records per week from 243 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.

Recorded on 178 dates. Latest record: December 2025.

Show as a table
Records of Isabella Tiger Moth in Cuyahoga County each week, and records of all species
WeekRecords of Isabella Tiger MothYears recordedRecords of all species
Jan 4–1000468
Jan 11–1700502
Jan 18–2400393
Jan 25–3122380
Feb 1–711590
Feb 8–1411504
Feb 15–2100455
Feb 22–2800583
Mar 1–700567
Mar 8–1411750
Mar 15–2133819
Mar 22–2811780
Mar 29 – Apr 4111,014
Apr 5–111651,655
Apr 12–18432,306
Apr 19–25001,857
Apr 26 – May 2334,135
May 3–9112,830
May 10–16222,640
May 17–23002,938
May 24–30222,903
May 31 – Jun 6222,621
Jun 7–13332,326
Jun 14–20552,465
Jun 21–27222,426
Jun 28 – Jul 4222,632
Jul 5–11222,765
Jul 12–18112,898
Jul 19–25332,860
Jul 26 – Aug 1632,736
Aug 2–8653,021
Aug 9–15112,627
Aug 16–22222,732
Aug 23–29322,388
Aug 30 – Sep 5333,076
Sep 6–12533,578
Sep 13–19653,735
Sep 20–261663,328
Sep 27 – Oct 31782,834
Oct 4–102382,275
Oct 11–174391,937
Oct 18–241361,181
Oct 25–311351,172
Nov 1–7106893
Nov 8–1463854
Nov 15–2100485
Nov 22–2843552
Nov 29 – Dec 533448
Dec 6–1200498
Dec 13–1911458
Dec 20–2611575
Dec 27 – Jan 232709

Reported as an adult

No adult season shown here. The weeks are still too uncertain to show a season.

Reported as a caterpillar

Usually reported as a caterpillar early August to early April, middle week Oct 11–17.

From 219 records that are marked as caterpillars. Not every photo is marked with a life stage, so this shows when people reported it as a caterpillar, not when caterpillars are about.

In Ohio

Early April to mid-November, middle week Oct 4–10

Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all

Records per week from 3,272 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.

Recorded on 1,234 dates. Latest record: December 2025.

Show as a table
Records of Isabella Tiger Moth in Ohio each week, and records of all species
WeekRecords of Isabella Tiger MothYears recordedRecords of all species
Jan 4–10536,211
Jan 11–17845,146
Jan 18–24424,645
Jan 25–31854,698
Feb 1–7856,023
Feb 8–141835,888
Feb 15–211045,436
Feb 22–281446,846
Mar 1–71158,321
Mar 8–1423810,384
Mar 15–2121812,620
Mar 22–286413,949
Mar 29 – Apr 414619,661
Apr 5–1150626,860
Apr 12–1825639,925
Apr 19–2518741,623
Apr 26 – May 217756,391
May 3–917652,952
May 10–1617653,785
May 17–2337757,698
May 24–3041854,651
May 31 – Jun 6541053,099
Jun 7–1352953,700
Jun 14–20421056,625
Jun 21–2742955,361
Jun 28 – Jul 423858,477
Jul 5–1122761,336
Jul 12–1834864,722
Jul 19–2553869,753
Jul 26 – Aug 145859,416
Aug 2–868759,712
Aug 9–1560955,994
Aug 16–22761054,328
Aug 23–2946851,772
Aug 30 – Sep 549957,167
Sep 6–1271959,075
Sep 13–1991954,543
Sep 20–26142945,860
Sep 27 – Oct 31871043,180
Oct 4–102781037,841
Oct 11–174111030,824
Oct 18–243421021,156
Oct 25–312251019,021
Nov 1–7177914,172
Nov 8–14122912,621
Nov 15–215997,965
Nov 22–283488,136
Nov 29 – Dec 52396,083
Dec 6–12946,004
Dec 13–192275,423
Dec 20–261345,661
Dec 27 – Jan 22878,459

Reported as an adult

Usually reported as an adult early May to late June, middle week early June, and again mid-July to mid-September, middle week early August.

Reported as a caterpillar

Usually reported as a caterpillar early August to early April, middle week Oct 11–17.

From 2,711 records that are marked as caterpillars. Not every photo is marked with a life stage, so this shows when people reported it as a caterpillar, not when caterpillars are about.

What these results show

These results show when people recorded a species, not when or where it occurs. Missing weeks and low counts do not mean absence or scarcity, and counts are not abundance. Contributed records reflect where, when and what people chose to observe.

Identification

How to identify it

Telling it apart

From what Ohio’s records show. Only what the records support is shown.

Often confused with

  • Virginian Tiger Moth Spilosoma virginicaOften confused in Ohio: 39 identifications in Ohio named one where the other was meant
  • Salt Marsh Moth Estigmene acreaOften confused in Ohio: 21 identifications in Ohio named one where the other was meant
  • Ruby Tiger Moth Phragmatobia fuliginosaOften confused in Ohio: 19 identifications in Ohio named one where the other was meant
  • Giant Leopard Moth Hypercompe scriboniaOften confused in Ohio: 16 identifications in Ohio named one where the other was meant

From iNaturalist’s similar-species counts, refreshed monthly: confusions in Ohio first, then worldwide. Only species with an Ohio result are listed.

When each is reported

  • All recordsUsually early April to mid-November, middle week early October · 3,272 records
  • Reported as a caterpillarUsually early August to early April, middle week mid-October · 2,711 records

Not every photo is marked with a sex or a sign, so these show when people reported each, not when it happens.

Land cover where it is recorded

Land coverIts recordsAll Ohio records
Developed54%49%
Forest23%31%
Farmland18%11%
Wetland4%5%
Open water0.8%3%
Barren0.4%0.6%
Grassland and shrub0.4%0.9%

From 1,938 records placed within 100 m, beside all Ohio records placed the same way. People record where they go, so this shows where records come from, not where the species lives. Land cover: USGS Annual NLCD, 2025 (opens in a new tab)

Sources

Where these results come from

  • Records from iNaturalist research-grade observations and expert-identified GBIF datasets, CC0, CC BY and CC BY-NC. Sources
  • Seasons use the published method and its evidence thresholds. Methods
  • See it on iNaturalist (opens in a new tab)OpenPhenology is independent and not affiliated with iNaturalist.

Records behind the Cuyahoga County result

243 records from 1 dataset.

To cite: the GBIF download doi:10.15468/dl.y2jkt8 (opens in a new tab).

A spreadsheet (CSV) with a link to each record, on iNaturalist or GBIF. Records whose location was hidden by the observer or the source are counted but not linked.