Season shown in 5 of Ohio's 88 counties. Explore Ohio
No result yet (21)
Recorded, too few records for a result (56)
Recorded, season not shown (6)
Season shown (5)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Swamp Milkweed Leaf Beetle 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
Recorded, too few records for a result
Athens County
Recorded, too few records for a result
Auglaize County
No qualifying records yet
Belmont County
Recorded, too few records for a result
Brown County
No qualifying records yet
Butler County
29 · Recorded, season not shown
Carroll County
No qualifying records yet
Champaign County
Recorded, too few records for a result
Clark County
Recorded, too few records for a result
Clermont County
20 · Recorded, season not 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
47 · Season shown
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
Recorded, too few records for a result
Erie County
Recorded, too few records for a result
Fairfield County
Recorded, too few records for a result
Fayette County
Recorded, too few records for a result
Franklin County
118 · Season shown
Fulton County
No qualifying records yet
Gallia County
Recorded, too few records for a result
Geauga County
Recorded, too few records for a result
Greene County
Recorded, too few records for a result
Guernsey County
No qualifying records yet
Hamilton County
80 · Recorded, season not shown
Hancock County
Recorded, too few records for a result
Hardin County
Recorded, too few records for a result
Harrison County
No qualifying records yet
Henry County
Recorded, too few records for a result
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
Recorded, too few records for a result
Lawrence County
No qualifying records yet
Licking County
20 · Recorded, season not shown
Logan County
Recorded, too few records for a result
Lorain County
34 · Recorded, season not shown
Lucas County
41 · Season shown
Madison County
Recorded, too few records for a result
Mahoning County
Recorded, too few records for a result
Marion County
Recorded, too few records for a result
Medina County
39 · Season 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
No qualifying records yet
Ottawa County
Recorded, too few records for a result
Paulding County
No qualifying records yet
Perry County
No qualifying records yet
Pickaway County
Recorded, too few records for a result
Pike County
Recorded, too few records for a result
Portage County
Recorded, too few records for a result
Preble County
No qualifying records yet
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
No qualifying records yet
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
Recorded, too few records for a result
Summit County
29 · Recorded, season not shown
Trumbull County
Recorded, too few records for a result
Tuscarawas County
No qualifying records yet
Union County
Recorded, too few records for a result
Van Wert County
Recorded, too few records for a result
Vinton County
No qualifying records yet
Warren County
Recorded, too few records for a result
Washington County
Recorded, too few records for a result
Wayne County
Recorded, too few records for a result
Williams County
Recorded, too few records for a result
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 Cuyahoga County
Late May to late September, middle week Jul 26 – Aug 1
Middle week · Jul 26 – Aug 1
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Cuyahoga County · records of all species each week, 92,154 in all
Records per week from 47 records in 8 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 44 dates. Latest record: September 2025.
Show as a table
Records of Swamp Milkweed Leaf Beetle in Cuyahoga County each week, and records of all species
Week
Records of Swamp Milkweed Leaf Beetle
Years recorded
Records of all species
Jan 4–10
0
0
468
Jan 11–17
0
0
502
Jan 18–24
0
0
393
Jan 25–31
0
0
380
Feb 1–7
0
0
590
Feb 8–14
0
0
504
Feb 15–21
0
0
455
Feb 22–28
0
0
583
Mar 1–7
0
0
567
Mar 8–14
0
0
750
Mar 15–21
0
0
819
Mar 22–28
0
0
780
Mar 29 – Apr 4
0
0
1,014
Apr 5–11
0
0
1,655
Apr 12–18
0
0
2,306
Apr 19–25
0
0
1,857
Apr 26 – May 2
0
0
4,135
May 3–9
0
0
2,830
May 10–16
0
0
2,640
May 17–23
2
2
2,938
May 24–30
2
2
2,903
May 31 – Jun 6
3
2
2,621
Jun 7–13
2
2
2,326
Jun 14–20
3
3
2,465
Jun 21–27
1
1
2,426
Jun 28 – Jul 4
2
2
2,632
Jul 5–11
3
2
2,765
Jul 12–18
2
1
2,898
Jul 19–25
2
2
2,860
Jul 26 – Aug 1
2
2
2,736
Aug 2–8
2
2
3,021
Aug 9–15
3
2
2,627
Aug 16–22
3
2
2,732
Aug 23–29
2
2
2,388
Aug 30 – Sep 5
2
2
3,076
Sep 6–12
2
2
3,578
Sep 13–19
2
2
3,735
Sep 20–26
4
2
3,328
Sep 27 – Oct 3
2
1
2,834
Oct 4–10
1
1
2,275
Oct 11–17
0
0
1,937
Oct 18–24
0
0
1,181
Oct 25–31
0
0
1,172
Nov 1–7
0
0
893
Nov 8–14
0
0
854
Nov 15–21
0
0
485
Nov 22–28
0
0
552
Nov 29 – Dec 5
0
0
448
Dec 6–12
0
0
498
Dec 13–19
0
0
458
Dec 20–26
0
0
575
Dec 27 – Jan 2
0
0
709
Reported as an adult
Only 6 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 larva
Only 2 records here are marked as larvae, too few to show a larva season. One needs at least 20 records from 5 different years.
In Ohio
Late May to mid-September, middle week Jul 12–18
Middle week · Jul 12–18
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 1,069 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 627 dates. Latest record: November 2025.
Show as a table
Records of Swamp Milkweed Leaf Beetle in Ohio each week, and records of all species
Week
Records of Swamp Milkweed Leaf Beetle
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
1
1
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
1
1
26,860
Apr 12–18
0
0
39,925
Apr 19–25
1
1
41,623
Apr 26 – May 2
0
0
56,391
May 3–9
1
1
52,952
May 10–16
9
3
53,785
May 17–23
22
4
57,698
May 24–30
36
9
54,651
May 31 – Jun 6
63
10
53,099
Jun 7–13
84
9
53,700
Jun 14–20
82
9
56,625
Jun 21–27
78
10
55,361
Jun 28 – Jul 4
69
10
58,477
Jul 5–11
61
9
61,336
Jul 12–18
55
9
64,722
Jul 19–25
74
10
69,753
Jul 26 – Aug 1
70
9
59,416
Aug 2–8
66
9
59,712
Aug 9–15
56
9
55,994
Aug 16–22
44
9
54,328
Aug 23–29
34
9
51,772
Aug 30 – Sep 5
30
8
57,167
Sep 6–12
43
8
59,075
Sep 13–19
24
9
54,543
Sep 20–26
21
9
45,860
Sep 27 – Oct 3
14
6
43,180
Oct 4–10
9
6
37,841
Oct 11–17
7
2
30,824
Oct 18–24
1
1
21,156
Oct 25–31
6
5
19,021
Nov 1–7
3
2
14,172
Nov 8–14
2
2
12,621
Nov 15–21
2
1
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 late May to mid-October, middle week Jul 19–25.
From 187 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 larva
Usually reported as a larva late June to late August, middle week Jul 26 – Aug 1.
From 22 records that are marked as larvae. Not every photo is marked with a life stage, so this shows when people reported it as a larva, not when larvae 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.
Asian Lady BeetleHarmonia axyridisOften confused in Ohio: 12 identifications in Ohio named one where the other was meant
False Potato BeetleLeptinotarsa juncta36 identifications worldwide named one where the other was meant
Colorado Potato BeetleLeptinotarsa decemlineata28 identifications worldwide named one where the other was meant
Anchor Stink BugStiretrus anchorago24 identifications worldwide named one where the other was meant
Large Milkweed BugOncopeltus (Erythrischius) fasciatus13 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 late May to mid-September, middle week mid-July · 1,069 records
Reported as an adultUsually late May to mid-October, middle week mid-July · 187 records
Reported as a larvaUsually late June to late August, middle week late July · 22 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: recorded
Mar: no record
Apr: recorded
May: recorded
Jun: recorded
Jul: recorded
Aug: recorded
Sep: recorded
Oct: recorded
Nov: recorded
Dec: no record
Not reported in Ohio in March and December to January, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Developed
70%49%
Farmland
17%11%
Forest
10%31%
Wetland
3%5%
Barren
0.3%0.6%
Open water
0.3%3%
Grassland and shrub
0.2%0.9%
From 654 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.
