Season shown in 17 of Ohio's 88 counties. Explore Ohio
No result yet (17)
Recorded, too few records for a result (48)
Recorded, season not shown (6)
Season shown (17)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Milkweed Tussock Moth by Ohio county: records and mapped range
County
Records
Adams County
Recorded, too few records for a result
Allen County
Recorded, too few records for a result
Ashland County
Recorded, too few records for a result
Ashtabula County
24 · Season shown
Athens County
20 · Season shown
Auglaize County
Recorded, too few records for a result
Belmont County
Recorded, too few records for a result
Brown County
Recorded, too few records for a result
Butler County
42 · Season shown
Carroll County
Recorded, too few records for a result
Champaign County
No qualifying records yet
Clark County
Recorded, too few records for a result
Clermont County
38 · Season shown
Clinton County
Recorded, too few records for a result
Columbiana County
Recorded, too few records for a result
Coshocton County
Recorded, too few records for a result
Crawford County
Recorded, too few records for a result
Cuyahoga County
109 · Season shown
Darke County
Recorded, too few records for a result
Defiance County
No qualifying records yet
Delaware County
33 · Season shown
Erie County
Recorded, too few records for a result
Fairfield County
21 · Recorded, season not shown
Fayette County
No qualifying records yet
Franklin County
86 · Season shown
Fulton County
Recorded, too few records for a result
Gallia County
No qualifying records yet
Geauga County
26 · Recorded, season not shown
Greene County
32 · Season shown
Guernsey County
Recorded, too few records for a result
Hamilton County
82 · Season shown
Hancock County
Recorded, too few records for a result
Hardin County
Recorded, too few records for a result
Harrison County
Recorded, too few records for a result
Henry County
No qualifying records yet
Highland County
Recorded, too few records for a result
Hocking County
Recorded, too few records for a result
Holmes County
Recorded, too few records for a result
Huron County
No qualifying records yet
Jackson County
No qualifying records yet
Jefferson County
Recorded, too few records for a result
Knox County
Recorded, too few records for a result
Lake County
35 · Recorded, season not shown
Lawrence County
No qualifying records yet
Licking County
45 · Season shown
Logan County
No qualifying records yet
Lorain County
45 · Season shown
Lucas County
47 · Recorded, season not shown
Madison County
Recorded, too few records for a result
Mahoning County
Recorded, too few records for a result
Marion County
No qualifying records yet
Medina County
40 · Recorded, season not shown
Meigs County
Recorded, too few records for a result
Mercer County
No qualifying records yet
Miami County
Recorded, too few records for a result
Monroe County
No qualifying records yet
Montgomery County
38 · Season shown
Morgan County
No qualifying records yet
Morrow County
Recorded, too few records for a result
Muskingum County
Recorded, too few records for a result
Noble County
Recorded, too few records for a result
Ottawa County
28 · Season shown
Paulding County
Recorded, too few records for a result
Perry County
Recorded, too few records for a result
Pickaway County
Recorded, too few records for a result
Pike County
Recorded, too few records for a result
Portage County
42 · Season shown
Preble County
Recorded, too few records for a result
Putnam County
No qualifying records yet
Richland County
Recorded, too few records for a result
Ross County
Recorded, too few records for a result
Sandusky County
Recorded, too few records for a result
Scioto County
Recorded, too few records for a result
Seneca County
Recorded, too few records for a result
Shelby County
No qualifying records yet
Stark County
29 · Season shown
Summit County
100 · Season shown
Trumbull County
Recorded, too few records for a result
Tuscarawas County
Recorded, too few records for a result
Union County
Recorded, too few records for a result
Van Wert County
No qualifying records yet
Vinton County
Recorded, too few records for a result
Warren County
27 · Recorded, season not shown
Washington County
Recorded, too few records for a result
Wayne County
23 · Season shown
Williams County
No qualifying records yet
Wood County
Recorded, too few records for a result
Wyandot County
Recorded, 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 Lorain County
Late June to early September, middle week Aug 9–15
Middle week · Aug 9–15
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Lorain County · records of all species each week, 26,475 in all
Records per week from 45 records in 9 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 40 dates. Latest record: September 2025.
Show as a table
Records of Milkweed Tussock Moth in Lorain County each week, and records of all species
Week
Records of Milkweed Tussock Moth
Years recorded
Records of all species
Jan 4–10
0
0
193
Jan 11–17
0
0
115
Jan 18–24
0
0
75
Jan 25–31
0
0
59
Feb 1–7
0
0
101
Feb 8–14
0
0
99
Feb 15–21
0
0
84
Feb 22–28
0
0
49
Mar 1–7
0
0
114
Mar 8–14
0
0
103
Mar 15–21
0
0
258
Mar 22–28
0
0
139
Mar 29 – Apr 4
0
0
228
Apr 5–11
0
0
376
Apr 12–18
0
0
561
Apr 19–25
0
0
560
Apr 26 – May 2
0
0
1,122
May 3–9
0
0
824
May 10–16
0
0
793
May 17–23
0
0
901
May 24–30
0
0
886
May 31 – Jun 6
0
0
771
Jun 7–13
0
0
797
Jun 14–20
0
0
1,124
Jun 21–27
3
2
954
Jun 28 – Jul 4
0
0
770
Jul 5–11
1
1
973
Jul 12–18
1
1
957
Jul 19–25
3
3
1,240
Jul 26 – Aug 1
1
1
912
Aug 2–8
8
5
907
Aug 9–15
6
4
769
Aug 16–22
8
5
768
Aug 23–29
3
1
788
Aug 30 – Sep 5
6
4
959
Sep 6–12
3
3
907
Sep 13–19
1
1
817
Sep 20–26
0
0
745
Sep 27 – Oct 3
1
1
508
Oct 4–10
0
0
597
Oct 11–17
0
0
343
Oct 18–24
0
0
426
Oct 25–31
0
0
297
Nov 1–7
0
0
278
Nov 8–14
0
0
210
Nov 15–21
0
0
121
Nov 22–28
0
0
100
Nov 29 – Dec 5
0
0
118
Dec 6–12
0
0
60
Dec 13–19
0
0
224
Dec 20–26
0
0
187
Dec 27 – Jan 2
0
0
208
Reported as an adult
Only 3 records here are marked as adults, too few to show a adult season. One needs at least 20 records from 5 different years.
Reported as a caterpillar
Usually reported as a caterpillar mid-July to early September, middle week Aug 16–22.
From 42 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
Mid-July to mid-September, middle week Aug 9–15
Middle week · Aug 9–15
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all
Records per week from 1,676 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 568 dates. Latest record: October 2025.
Show as a table
Records of Milkweed Tussock Moth in Ohio each week, and records of all species
Week
Records of Milkweed Tussock Moth
Years recorded
Records of all species
Jan 4–10
0
0
6,211
Jan 11–17
0
0
5,146
Jan 18–24
0
0
4,645
Jan 25–31
0
0
4,698
Feb 1–7
0
0
6,023
Feb 8–14
0
0
5,888
Feb 15–21
0
0
5,436
Feb 22–28
0
0
6,846
Mar 1–7
0
0
8,321
Mar 8–14
0
0
10,384
Mar 15–21
0
0
12,620
Mar 22–28
0
0
13,949
Mar 29 – Apr 4
0
0
19,661
Apr 5–11
0
0
26,860
Apr 12–18
0
0
39,925
Apr 19–25
0
0
41,623
Apr 26 – May 2
0
0
56,391
May 3–9
0
0
52,952
May 10–16
0
0
53,785
May 17–23
1
1
57,698
May 24–30
1
1
54,651
May 31 – Jun 6
1
1
53,099
Jun 7–13
1
1
53,700
Jun 14–20
6
6
56,625
Jun 21–27
5
2
55,361
Jun 28 – Jul 4
9
4
58,477
Jul 5–11
25
7
61,336
Jul 12–18
54
9
64,722
Jul 19–25
104
9
69,753
Jul 26 – Aug 1
165
10
59,416
Aug 2–8
256
10
59,712
Aug 9–15
235
10
55,994
Aug 16–22
244
10
54,328
Aug 23–29
215
10
51,772
Aug 30 – Sep 5
163
10
57,167
Sep 6–12
96
9
59,075
Sep 13–19
47
9
54,543
Sep 20–26
26
8
45,860
Sep 27 – Oct 3
13
7
43,180
Oct 4–10
8
5
37,841
Oct 11–17
1
1
30,824
Oct 18–24
0
0
21,156
Oct 25–31
0
0
19,021
Nov 1–7
0
0
14,172
Nov 8–14
0
0
12,621
Nov 15–21
0
0
7,965
Nov 22–28
0
0
8,136
Nov 29 – Dec 5
0
0
6,083
Dec 6–12
0
0
6,004
Dec 13–19
0
0
5,423
Dec 20–26
0
0
5,661
Dec 27 – Jan 2
0
0
8,459
Reported as an adult
Usually reported as an adult early June to early August, middle week Jul 12–18.
From 65 records that are marked as adults. Not every photo is marked with a life stage, so this shows when people reported it as an adult, not when adults are about.
Reported as a caterpillar
Usually reported as a caterpillar mid-July to mid-September, middle week Aug 16–22.
From 1,596 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.
MonarchDanaus (Danaus) plexippus36 identifications worldwide named one where the other was meant
Fall Webworm MothHyphantria cunea27 identifications worldwide named one where the other was meant
Banded Tussock MothHalysidota tessellaris24 identifications worldwide named one where the other was meant
Virginian Tiger MothSpilosoma virginica22 identifications worldwide 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 mid-July to mid-September, middle week early August · 1,676 records
Reported as an adultUsually early June to early August, middle week mid-July · 65 records
Not every photo is marked with a sex or a sign, so these show when people reported each, not when it happens.
Months not reported
Jan: no record
Feb: no record
Mar: no record
Apr: no record
May: recorded
Jun: recorded
Jul: recorded
Aug: recorded
Sep: recorded
Oct: recorded
Nov: no record
Dec: no record
Not reported in Ohio in November to April, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Developed
62%49%
Forest
20%31%
Farmland
14%11%
Wetland
3%5%
Grassland and shrub
0.7%0.9%
Barren
0.4%0.6%
Open water
0.2%3%
From 978 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
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.
