Season shown in 2 of Ohio's 88 counties. Explore Ohio
No result yet (55)
Recorded, too few records for a result (28)
Recorded, season not shown (3)
Season shown (2)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
European Hornet by Ohio county: records and mapped range
County
Records
Adams County
Recorded, too few records for a result
Allen County
No qualifying records yet
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
No qualifying records yet
Brown County
Recorded, too few records for a result
Butler County
Recorded, too few records for a result
Carroll County
No qualifying records yet
Champaign County
No qualifying records yet
Clark County
No qualifying records yet
Clermont County
Recorded, too few records for a result
Clinton County
No qualifying records yet
Columbiana County
Recorded, too few records for a result
Coshocton County
No qualifying records yet
Crawford County
No qualifying records yet
Cuyahoga County
83 · Season shown
Darke County
No qualifying records yet
Defiance County
No qualifying records yet
Delaware County
No qualifying records yet
Erie County
Recorded, too few records for a result
Fairfield County
No qualifying records yet
Fayette County
No qualifying records yet
Franklin County
Recorded, too few records for a result
Fulton County
No qualifying records yet
Gallia County
No qualifying records yet
Geauga County
Recorded, too few records for a result
Greene County
Recorded, too few records for a result
Guernsey County
Recorded, too few records for a result
Hamilton County
Recorded, too few records for a result
Hancock County
No qualifying records yet
Hardin County
No qualifying records yet
Harrison County
No qualifying records yet
Henry County
No qualifying records yet
Highland County
Recorded, too few records for a result
Hocking County
No qualifying records yet
Holmes County
No qualifying records yet
Huron County
Recorded, too few records for a result
Jackson County
No qualifying records yet
Jefferson County
No qualifying records yet
Knox County
No qualifying records yet
Lake County
22 · Season shown
Lawrence County
Recorded, too few records for a result
Licking County
No qualifying records yet
Logan County
No qualifying records yet
Lorain County
Recorded, too few records for a result
Lucas County
No qualifying records yet
Madison County
No qualifying records yet
Mahoning County
Recorded, too few records for a result
Marion County
No qualifying records yet
Medina County
20 · Recorded, season not shown
Meigs County
No qualifying records yet
Mercer County
No qualifying records yet
Miami County
No qualifying records yet
Monroe County
No qualifying records yet
Montgomery County
No qualifying records yet
Morgan County
Recorded, too few records for a result
Morrow County
No qualifying records yet
Muskingum County
Recorded, too few records for a result
Noble County
No qualifying records yet
Ottawa County
No qualifying records yet
Paulding County
No qualifying records yet
Perry County
No qualifying records yet
Pickaway County
No qualifying records yet
Pike County
Recorded, too few records for a result
Portage County
24 · Recorded, season not shown
Preble County
No qualifying records yet
Putnam County
No qualifying records yet
Richland County
No qualifying records yet
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
No qualifying records yet
Shelby County
No qualifying records yet
Stark County
Recorded, too few records for a result
Summit County
34 · Recorded, season not shown
Trumbull County
Recorded, too few records for a result
Tuscarawas County
No qualifying records yet
Union County
No qualifying records yet
Van Wert County
No qualifying records yet
Vinton County
No qualifying records yet
Warren County
No qualifying records yet
Washington County
Recorded, too few records for a result
Wayne County
Recorded, too few records for a result
Williams County
No qualifying records yet
Wood County
No qualifying records yet
Wyandot County
No qualifying records yet
No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.
Season
When it is recorded
In Medina County
Not enough evidence
The weeks are still too uncertain to show a season. Based on 20 records in 9 of the 10 years from 2016 to 2025, above the minimum of 20 records from 5 different years.
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Medina County · records of all species each week, 24,971 in all
Records per week from 20 records in 9 of the 10 years from 2016 to 2025. Shows when people recorded it, not a season or how common it is.
Show as a table
Records of European Hornet in Medina County each week, and records of all species
Week
Records of European Hornet
Years recorded
Records of all species
Jan 4–10
0
0
111
Jan 11–17
0
0
88
Jan 18–24
0
0
113
Jan 25–31
0
0
99
Feb 1–7
0
0
125
Feb 8–14
0
0
136
Feb 15–21
0
0
133
Feb 22–28
0
0
165
Mar 1–7
0
0
128
Mar 8–14
0
0
211
Mar 15–21
0
0
285
Mar 22–28
0
0
250
Mar 29 – Apr 4
0
0
292
Apr 5–11
0
0
470
Apr 12–18
0
0
621
Apr 19–25
0
0
796
Apr 26 – May 2
0
0
971
May 3–9
0
0
791
May 10–16
0
0
636
May 17–23
1
1
631
May 24–30
0
0
804
May 31 – Jun 6
0
0
713
Jun 7–13
0
0
781
Jun 14–20
0
0
596
Jun 21–27
0
0
728
Jun 28 – Jul 4
0
0
845
Jul 5–11
0
0
772
Jul 12–18
0
0
906
Jul 19–25
0
0
899
Jul 26 – Aug 1
1
1
974
Aug 2–8
2
1
1,018
Aug 9–15
0
0
787
Aug 16–22
0
0
765
Aug 23–29
1
1
675
Aug 30 – Sep 5
1
1
836
Sep 6–12
0
0
920
Sep 13–19
2
2
740
Sep 20–26
1
1
670
Sep 27 – Oct 3
2
2
783
Oct 4–10
1
1
464
Oct 11–17
4
2
349
Oct 18–24
1
1
262
Oct 25–31
1
1
245
Nov 1–7
0
0
251
Nov 8–14
2
1
236
Nov 15–21
0
0
144
Nov 22–28
0
0
161
Nov 29 – Dec 5
0
0
122
Dec 6–12
0
0
110
Dec 13–19
0
0
107
Dec 20–26
0
0
114
Dec 27 – Jan 2
0
0
142
Reported as an adult
Only 2 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
No records here are marked as larvae yet, so there is no larva season to show. One needs at least 20 records from 5 different years.
In Ohio
Mid-May to early November, middle week Sep 6–12
Middle week · Sep 6–12
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 439 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 334 dates. Latest record: December 2025.
Show as a table
Records of European Hornet in Ohio each week, and records of all species
Week
Records of European Hornet
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
1
1
19,661
Apr 5–11
0
0
26,860
Apr 12–18
1
1
39,925
Apr 19–25
2
2
41,623
Apr 26 – May 2
2
1
56,391
May 3–9
9
2
52,952
May 10–16
7
5
53,785
May 17–23
22
7
57,698
May 24–30
21
7
54,651
May 31 – Jun 6
8
5
53,099
Jun 7–13
9
6
53,700
Jun 14–20
5
4
56,625
Jun 21–27
4
2
55,361
Jun 28 – Jul 4
3
3
58,477
Jul 5–11
2
2
61,336
Jul 12–18
3
3
64,722
Jul 19–25
2
2
69,753
Jul 26 – Aug 1
7
5
59,416
Aug 2–8
17
6
59,712
Aug 9–15
7
6
55,994
Aug 16–22
14
4
54,328
Aug 23–29
23
7
51,772
Aug 30 – Sep 5
31
7
57,167
Sep 6–12
32
9
59,075
Sep 13–19
29
8
54,543
Sep 20–26
30
7
45,860
Sep 27 – Oct 3
29
8
43,180
Oct 4–10
25
9
37,841
Oct 11–17
29
9
30,824
Oct 18–24
14
6
21,156
Oct 25–31
22
6
19,021
Nov 1–7
12
6
14,172
Nov 8–14
13
6
12,621
Nov 15–21
2
2
7,965
Nov 22–28
0
0
8,136
Nov 29 – Dec 5
1
1
6,083
Dec 6–12
1
1
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
No adult season shown here. The weeks are still too uncertain to show a season.
Reported as a larva
No records here are marked as larvae yet, so there is no larva season to show. One needs at least 20 records from 5 different years.
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.
German YellowjacketVespula germanica96 identifications worldwide named one where the other was meant
Eastern Cicada-killer WaspSphecius speciosus86 identifications worldwide named one where the other was meant
European Paper WaspPolistes dominula49 identifications worldwide named one where the other was meant
Eastern YellowjacketVespula maculifrons39 identifications worldwide named one where the other was meant
Western Honey BeeApis mellifera32 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.
Months not reported
Jan: no record
Feb: no record
Mar: recorded
Apr: recorded
May: recorded
Jun: recorded
Jul: recorded
Aug: recorded
Sep: recorded
Oct: recorded
Nov: recorded
Dec: recorded
Not reported in Ohio in January to February, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Developed
72%49%
Forest
16%31%
Farmland
8%11%
Wetland
3%5%
Barren
0.4%0.6%
Open water
0.4%3%
From 263 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.
